3770a Mot Tri En

5074

1 2

3-phase TEFV cage or slip-ringinduction motors

Installation and maintenance

3770 en - 07.2003 / a

This manual is to be given to

the end user

2

3-phase TEFVcage or slip-ringinduction motors

IMPORTANT

These symbols appear in this document whenever it is important to take special precautions

during installation, operation, servicing or maintenance of the motors.

It is essential that electric motors are installed by experienced, qualified and authorised personnel.

In accordance with the main requirements of EEC Directives, the safety of people, animals and goods should be

ensured when fitting the motors into machines.

Particular attention should be given to the equipotential ground or earthing connections.

The noise level of the machines, measured under normal conditions, conforms to the requirements of the

standard and does not exceed the maximum value of 85 dB(A) pressure at 1 metre.

The following precautions must be taken before working on any stoppeddevice :

• mains voltage disconnected and no residual voltage present• careful study of the causes of the stoppage (blocked transmission - loss of phase - cut-out due to thermal protection - lack of lubrication, etc)

3


Dear customer,

You have just acquired a LEROY-SOMER motor.

This motor benefits from the experience of one of the largest manufacturers in the world, using state-of-the-art technology in automation, specially selected materials, rigorous quality control. As a result, the regulatoryauthorities have awarded our motor factories the ISO 9001-Edition 2000 international certificate.

We thank you for making this choice, and would ask you to read the contents of this manual.

By observing a few essential rules, you will ensure problem-free operation for many years.

LEROY-SOMER

CE CONFORMITY :The motors conform with standard IEC 34, and consequently with the Low Voltage Directive 73/23/EEC modifiedby Directive 93/68. They therefore carry the mark.

NOTE

LEROY-SOMER reserves the right to modify its product characteristics at any time to incorporate the latest techno-logical developments. The information contained in this document may therefore be changed without prior warning.

Copyright 2003 : LEROY-SOMERThis document is the property of LEROY-SOMER.It cannot be reproduced in any form without prior authorisation.

All brand names are registered trademarks.

LEROY-SOMER MOTORS declares that the components :

conform to the harmonized standard EN 60 034 (IEC 34) and thus meet the essential requirements of Low Voltage Directive 73-23 EEC of 19th February 1973 modified by Directive 93-68 EEC of 22nd July 1993.

The components thus defined also meet the essential requirements of the Electromagnetic Compatibility Directive 89-336 EEC of 3rd May 1989 modified by Directives 92-31 EEC of28th April 1992 and 93-68 EEC of 22nd July 1993,if they are used within certain voltage limits (IEC 34).

By reason of such conformity, these component ranges may be used in machines governed by the Machinery Directive 98/37/CE, provided that the method of integration or incorporation and/or assembly conforms to at least the regulations in standard EN 60204 "Electrical Equipment for Machinery" and our installation manual.

The components defined above must not be installed unless the machine in which they are incorporated has been declared as conforming to the relevant directives.

N.B. : When components are powered by specially adapted electronic converters and/or servo-controlled by electronic control-command devices, they must be installed by a professional person. This person must take responsibility for complying with the regulations concerning electromagnetic compatibility in the country where the machine is used.

Declaration made by At On

Quality DirectorMOTEURS LEROY-SOMER Signature

MOTEURS LEROY-SOMERUSINE

DECLARATION OF CONFORMITY AND INCORPORATION

MOTEURS LEROY-SOMER (SIEGE SOCIAL BD MARCELLIN LEROY - 16015 ANGOULEME CEDEX) SOCIETE ANONYME AU CAPITAL DE 411 800 000 F - RCS ANGOULEME B 338 567 258 - SIRET 338 567 258 00011

4


CONTENTS

1 - RECEIPT1.1 - Identification...................................................... 51.2 - Storage ............................................................6

2 - RECOMMENDATIONS FOR ASSEMBLY2.1 - Checking the isolation....................................... 62.2 - Location - ventilation......................................... 72.3 - Coupling............................................................72.4 - Electrical guidelines.........................................102.5 - Supply connection........................................... 13

3 - DAILY MAINTENANCE3.1 - Greasing..........................................................163.2 - Bearings maintenance.....................................173.3 - Slip-ring motors............................................... 17

4 - PREVENTIVE MAINTENANCE............................. 18

5 - TROUBLESHOOTING GUIDE...............................19

6 - CORRECTIVE MAINTENANCE : GENERAL INFORMATION....................................206.1 - Dismantling the motor..................................... 206.2 - Before reassembly.......................................... 206.3 - Mounting the bearings on the shaft................. 206.4 - Reassembling the motor................................. 206.5 - Reassembling the terminal box....................... 20

7 - POSITION OF THE LIFTING RINGS.....................21

8 - SPARE PARTS......................................................22

DISMANTLING AND REASSEMBLY PROCEDURES

9 - LS CAGE MOTORS......................................24 to 339.1 - LS 56 to LS 160 MP/LR motors.......................249.2 - LS 160 M/L, LS 180 MT/LR motors.................269.3 - LS 180 L, LS 200, LS 225 ST/MT/MR motors... 289.4 - LS 225 MK, LS 250, LS 280 SP/PMP motors... 309.5 - LS 280 SK/MK, LS 315 motors....................... 32

10 - FLS-FLSC CAGE MOTORS.......................34 to 4510.1 - FLS-FLSC 80 to 132 motors......................... 3410.2 - FLS-FLSC 160 and 180 motors.................... 3610.3 - FLS-FLSC 200 to 225 MT motors................. 3810.4 - FLS-FLSC 225 M to 280 motors................... 4010.5 - FLS-FLSC 315 to 355 LD motors..................4210.6 - FLS-FLSC 355 LK to 450 motors.................. 44

11 - FLSB-FLSLB SLIP-RING MOTORS.......... 46 to 5311.1 - FLSB-FLSLB 160 motors.............................. 4611.2 - FLSB-FLSLB 180 and 200 motors................ 4811.3 - FLSB-FLSLB 225 and 250 motors................ 5011.4 - FLSB-FLSLB 280 to 355 motors................... 52

INDEX

Adjustments...................................................................8Alarm and early warning..............................................12Assembly....................................................................... 6Balancing.......................................................................7Bearings............................................................... 16 - 17Belts...............................................................................9Cable gland................................................................. 13Cables: cross-section........................................... 14 - 15Capacitors................................................................... 11Connection.................................................................. 15Coupling .................................................................. 7 - 8Coupling sleeves .......................................................... 8Digistart....................................................................... 10Direction of rotation..................................................... 15Draining condensation ................................................16Earth............................................................................11Earth terminal.............................................................. 15European Directives...................................................... 5Frequency inverter.......................................................10Greasing - Grease nipples.............................. 6 - 16 - 17Identification.................................................................. 1Inertia handwheel.......................................................... 8Integral thermal protection...........................................12Insulation ...................................................................... 6Lifting ring.................................................................... 21Location......................................................................... 7Logos ............................................................................5Lubrication................................................................... 16Maintenance, normal................................................... 17Maintenance, preventive............................................. 18Maintenance, corrective....................................... 20 - 29Materials handling......................................................... 7Nameplate..................................................................... 5Power.......................................................................... 10Power supply............................................................... 15Pulleys........................................................................... 9Receipt.......................................................................... 1Repair.......................................................................... 19Safety features............................................................ 11Slide rails....................................................................... 9Slip-ring motors.................................................... 11 - 17Space heaters............................................................. 12Spare parts.................................................................. 22Starting........................................................................ 10Storage.......................................................................... 6Supply connection....................................................... 13Terminal block: tightening the nuts..............................15Terminal box ...............................................................13Tie rods: tightening ..................................................... 20Tolerances.....................................................................8Ventilation......................................................................7Wiring diagrams...........................................................15

4500 / 3000 H 50/60 Hz

MOT. 3 FLSC 355 LB

IP 55 IK 08 I cl. F 40 °C S1 %V Hz min-1 kW cos ϕ A

N° 703 481 00 HA 002 kg : 1550d/h

DE

TRESSO UNIREX N3 GREASE

NDE6322 C36322 C3

4500 / 3000 H 50/60 Hz60 cm3

60 cm3

380400690415440460

50---

60-

14831485

-148617771780

300---

345-

0.910.90

-0.890.91

-

525504291493518499

N° 078594 HA 0023 LS 100 L - TR

IP 55 IK 08 cl.F 40°C S1 kg 18V Hz min-1 kW cos ϕ A

380400690415440460

50---

60-

28402860

-287034303455

3---

3.6-

0.890.83

-0.790.900.87

6.46.33.66.76.56.3

5


MOT 3 ~ : Three-phase A.C. motorLS : Range100 : Frame sizeL : Housing symbolTR : Impregnation index

Motor No.

N° : Motor batch number

for type 80 to 355 motors:H* : Year of productionA** : Month of production002 : Serial number

IP55 IK08 : Index of protection(I) cl. F : Insulation class F40°C : Contractual ambient operating

temperatureS : Duty% : Duty (operating) factor...d/h : Number of cycles per hourkg : Weight

V : Supply voltageHz : Supply frequencymin-1 : Revolutions per minutekW : Rated output powercos ϕ : Power factorA : Rated current∆ : Delta connectionY : Star connectionUR : Rotor voltageIR : Rotor current

Bearings

DE : Drive end bearingNDE : Non drive end bearing60 cm3 : Amount of grease at each

regreasing (in cm3)4500 H : Regreasing interval

(in running hours) for amb θ indicated at 50 Hz frequency

3000 H : Regreasing interval(in running hours) for amb θ indicated at 60 Hz frequency

UNIREX N3 : Type of grease

▼ Explanation of symbols used on nameplates

* G = 1996 ** A = January H = 1997 B = February

1 - RECEIPTAfter receiving your motor, check that no damage has been sustained during transit. If there is any damage, contact the carrier (a claim can be made on their insurance) and after a visual check turn the motor byhand to detect any possible fault.

1.1 - IdentificationEnsure that the nameplate conforms with the order specifications on receipt of the motor.

* Other logos may be used as an optional extra : This must be agreed prior to ordering.

*

11000 / H 50/60 Hz

MOT. 3 FLSB 180 M

IP 55 IK 08 I cl. F 40 °C S3 40 %V Hz min-1 kW cos ϕ A

N° 596 059 GH 001 kg : 2086 d/h

DEESSO UNIREX N3 GREASE

NDE6310 C36310 C3

11000 / H 50/60 Hz15 cm3

15 cm3

220

380UR

250

50

50

1427

1427

17

17

0.88

0.88

60

35IR

42

Legal mark indicating that the equipmentconforms to the requirements of theEuropean Directives.

1.2 - StorageBefore commissioning, motors must be : - sheltered from humidity : for relative humidities greaterthan 90%, the machine insulation can drop very quicklyand become virtually non-existent at around 100%;check the anti-rust protection on unpainted parts.For a very long storage period, the motor can be placedin a sealed package (eg. heat-sealed plastic) containingdehydrating sachets.- protected from frequent significant temperaturevariations to prevent any condensation; during storage,the drain plugs should be removed to allow condensationwater to escape.- in the event of surrounding vibrations, try to reduce theeffect of these vibrations by placing the motor on adamping support (eg. rubber plate) and turn the rotorslightly every fortnight to prevent the bearing rings frombeing marked.- do not remove the rotor locking device (where there areroller bearings).Even if the motor has been stored in the correctconditions, certain checks must be carried out beforestarting up :

GreasingBearings which cannot be regreasedMaximum storage : 3 years. After this time has elapsed,replace the bearings (see section 6.3)Bearings which can be regreased

Greases used by LEROY-SOMER (see nameplate) :

grade 2: KYODO SRL2 - ELF CHEVRON SRI 2grade 3: ESSO UNIREX N 3 - SHELL ALVANIA G3

2 - RECOMMENDATIONS FOR ASSEMBLY

2.1 - Checking the insulation

This check is essential if the motor has been stored forlonger than 6 months or if it has been in a dampatmosphere.This measurement is carried out with a megohmmeter at500 volts D.C. (do not use a magnetoelectric system).It is better to carry out an initial test at 30 or 50 volts andif the insulation is greater than 1 megohm, carry out asecond test at 500 volts for 60 seconds. Insulation mustbe at least 10 megohms in cold state.If this value cannot be reached, and without exception ifthe motor may have been splashed with water, saltspray, kept in a very humid place or if it is covered incondensation, it is advisable to dehydrate the stator for24 hours in a drying oven at a temperature of between110° and 120°C.If the motor cannot be placed in a drying oven :- switch on the motor, with the rotor locked, under 3-phaseA.C. voltage reduced to approximately 10% of the ratedvoltage, for 12 hours (use an induction regulator or areduction transformer with adjustable outlets). For slip-ring motors, this test should be performed with the rotorshort-circuited.- or supply it with D.C. current, with all 3 phases inseries, and with the voltage at 1 to 2% of the ratedvoltage (use a D.C. generator with independentexcitation or batteries for motors less than 22 kW).- NB: The A.C. current should be monitored via a clampammeter, the D.C current with a shunt ammeter. Thiscurrent must not exceed 60% of the rated current.Ideally place a thermometer on the motor housing : if thetemperature exceeds 70°C, reduce the indicated voltageor current by 5% of the original value for a 10° deviation.While drying, all motor orifices must be clear (terminalbox, drain holes).

6


Grade 2grease

Grade 3grease

less than 6 months

less than1 year

The motor can be commissionedwithout regreasing

more than 6 monthsless than

1 year

more than1 year

less than 2 years

Regrease before commissioningas described in section 3.1

more than1 year

less than5 years

more than2 years

less than5 years

Dismantle the bearing- Clean it- Renew the grease totally

more than5 years

more than5 years

Change the bearing- Regrease it completely

Sto

rage

per

iod

M

Electric motors are industrial products. Therefore,they must only be installed by qualifiedexperienced and authorised personnel. Thesafety of people, animals and goods should beensured when fitting the motors into machines.(please refer to current standards).

Before starting the motor, it is advisable tocheck the insulation between phases and

earth, and between phases.

Warning : If the dielectric test, carried outat the factory before despatch, has to be

carried out again, it should be performed at halfthe standardised voltage ie. : 1/2 (2U+1000V).Make sure that the capacitive effect resulting fromthe dielectric test is eliminated before connectingthe terminals to earth.

Before commissioning for all motors:Rotate the motor at no load (no mechanical

load), for 2 to 5 minutes, checking that there is noabnormal noise; if there is any abnormal noise,see section 5.

In all cases, the user must check the compatibilityof the motor with its environment, before itsinstallation and over its entire operating lifetime.

2.2 - Location - ventilationOur motors are cooled in accordance with method IC411 (standard IEC 34-6) ie. "machine cooled by itssurface, using the ambient fluid (air) flowing along themachine".A fan at the back cools the motor; air is sucked inthrough the grill of a fan cover (which provides protectionagainst direct contact with the fan in accordance withstandard IEC 34-5) and blown along the ribs of thehousing to ensure the motor does not overheat whateverthe direction of rotation.

The motor should be installed in a sufficiently ventilatedplace, with the air intake and outlet clear by at least aquarter of the axis height.Blocking the fan cover grill, even accidentally (clogging-up), is likely to adversely affect motor operation.If operating vertically with the shaft end facing down, themotor should be fitted with a drip cover to preventpenetration by any foreign bodies.It is also necessary to check that hot air is not beingrecycled; otherwise, to prevent the motor from heatingabnormally, pipes must be provided for intake of fresh airand outlet of hot air.In this case, and if the air is not being circulated by anauxiliary fan, the pipe dimensions must be such that loadlosses are negligible compared to those of the motor.

PositioningThe motor should be mounted, in the positionspecified in the order, on a sufficiently rigid base toprevent distortion and vibration.Where the motor feet have six fixing holes, it ispreferable to use those which correspond either to thestandard dimensions for the motor power rating (refer tothe technical catalogue for induction motors) orotherwise to those shown at B2.

Provide easy access to the terminal box, thecondensation drain plugs and, if appropriate, to thegrease nipples.

Use hoisting equipment compatible with the weight of themotor (indicated on the nameplate).

2.3 - CouplingPreparationTurn the motor by hand before coupling to detect apossible fault due to handling.Remove any shaft extension protection.

Drain any condensation water inside the motor byremoving the plugs which block the drain holes.

Rotor locking deviceFor made-to-order motors with roller bearings, removethe rotor locking device.In exceptional circumstances when the motor has to bemoved after mounting the coupling device, the rotor mustbe re-immobilised.

BalancingRotating machines are balanced according to theISO 8821 standard :- half-key when the shaft extension is marked H,- no key when the shaft extension is marked N,- full key when the shaft extension is marked F.Thus any coupling element (pulley, coupling sleeve, ring,etc) must be balanced appropriately.

Motor with 2 shaft extensions : If the second shaft extension is not used, in order tomaintain the correct balancing, the key or half-keymust be fixed firmly in the keyway so that it is notthrown out during rotation (H or F balancing) and toprotect it from any direct contact.

7


1/4 H min

H

B 2B 1

When the motor is provided with liftingrings, they are only for lifting the motor and

must not be used to lift the whole of the machineafter fixing the motor to it.Note 1 : When installing a suspended motor, it isessential to provide protection in case the fixingbreaks.Note 2 : Never stand on the motor.

PrecautionsAll appropriate measures must be taken to protectagainst risks incurred where there are rotating parts(coupling sleeve, pulley, belt, etc).

Beware of backdriving when the motor is switched off.Corrective action must be taken :- on pumps, install a non-return valve.- on mechanical devices, install a backstop or a holdingbrake.- etc.

Tolerances and adjustmentsStandard tolerances apply to the values of themechanical characteristics published in the catalogues.These conform with the requirements of the IEC 72-1standard.- Comply strictly with the instructions of the transmissiondevice supplier. - Avoid impacts which might damage the bearings.Use a spanner and the tapped hole of the shaftextension with a special lubricant (eg. molykote grease)to make it easier to fix the coupling.

The hub of the transmission device must be :- in contact with the shoulder of the shaft or if this ismissing, against the metal stop ring which forms alabyrinth seal and thus locks the bearing in place (do notbreak the seal).- longer than the shaft extension (2 to 3 mm) so it can betightened with a screw and washer; otherwise, a lockingring must be inserted without cutting the key (if this ringis large, it must be balanced).

When there is a second shaft extension, it must only beused for direct coupling and the same advice must befollowed.

When starting a motor without any couplingdevice, immobilise the key carefully in its

housing.

The inertia handwheels must not be mounted directlyonto the shaft extension, but installed between endshields and connected by a coupling sleeve.

Direct coupling onto the machineWhen mounted directly onto the motor shaft extension ofthe mobile device (pump or fan turbine), check that thisdevice is perfectly balanced and that the radial force andthe axial thrust are within the limits indicated in thecatalogue for maintaining the bearings.

Direct coupling using a coupling sleeveSelection of the coupling sleeve should take account ofthe rated torque to be transmitted and the safety factordependent on the starting conditions of the electricmotor.

The machines must be aligned carefully, so that theconcentric and parallel deviations of both couplinghalves are compatible with the recommendations of thecoupling sleeve manufacturer.

Both coupling halves should be provisionally assembledto assist their movement in relation to one another.

Adjust the parallel plane of the two shafts using a gauge.Measure the distance at one point of the circumferencebetween the two coupling surfaces; turn them by 90°,180°, and 270° in relation to this initial position andmeasure each time. The difference between the twoextremes of the value of "x" must not exceed 0.05 mmfor standard couplings.

To perfect this adjustment and at the same time checkthe coaxial relation of the two shafts, fit 2 gauges asshown in the diagram and turn both shafts slowly.The deviations registered by one or other will indicatethe need for either an axial or radial adjustment if thedeviation exceeds 0.05 mm.

Direct coupling using a rigid coupling sleeveBoth shafts must be aligned so as to adhere to thetolerances of the coupling sleeve manufacturer.Maintain the minimum distance between the shaftextensions to allow for expansion of the motor shaft andthe load shaft.

8


x

A

Ø

Ø (mm) A (mm)min

9 to 55 1

60 1,5

65 1,5

75 2

80 2

��

��

��

��

��

��

��

��

��

��

��

��

Applied toshoulder of the shaft

Applied tostop ring

The 2nd shaft extension may also be smallerthan the main one and under no circum-

stances can it supply torques greater than halfthe rated torque.

Transmission via belt pulleysThe user can choose the diameter of the pulleys.Cast iron pulleys with a diameter of more than 315 arenot recommended for rotation speeds of 3000 min-1.Flat belts cannot be used for rotation speeds of 3000min-1 or more.

Positioning the beltsSo that the belts can be correctly positioned, allow forpossible adjustment of approximately 3% with respect tothe calculated distance E.Force should never be used when mounting the belts.For notched belts position the notches in the pulleygrooves.

Aligning the pulleys

Check that the motor shaft is completely parallel withthat of the receiving pulley.

Adjusting the tension of the beltsThe tension of the belts should be adjusted very carefullyin line with the recommendations of the belt supplier andthe calculations made when the product was specified.Reminder :- tension too great = unnecessary force on the endshields which can wear out the bearing unit (end shield-bearings) prematurely and eventually break the shaft.- tension too weak = vibration (wearing of bearing unit).fixed distance between centres : place a belt tensioning pulley on the slack side of the belts :- smooth pulley on the outside of the belt;- grooved pulley on the inside of the belts when using V-belts.adjustable distance between centresThe motor is usually mounted on slide rails, enablingoptimum adjustment of the pulley alignment and the belttension. Place the slide rails on a perfectly horizontal baseplate.Lengthways, the position of the slide rails is determined bythe length of the belt, and crossways by the pulley of thedriven machine.Mount the slide rails firmly with the tension screws in thedirection shown in the diagram (the slide rail screw on thebelt side is between the motor and the driven machine).Fix the slide rails to the baseplate, adjust the belt tension asbefore.

9


E

Tension screw

Tension screw

MOTOR TYPE OF DIMENSIONS SLIDE RAIL

FRAME SIZE SLIDE RAIL A E H K L X Y Z Ø J WEIGHT PER PAIR (kg)

80 and 90 G 90/8 PM 355 395 40 2,5 50 324 264 294 13 3

100,112 and 132 G 132/10 PM 480 530 49,5 7 60 442 368 405 15 6

160 and 180 G 180/12 PM 630 686 60,5 7 75 575 475 525 19 11

200 and 225 G 225/16 PF 800 864 75 28,5 90 - 623 698 24 16

250 and 280 G 280/20 PF 1000 1072 100 35 112 - 764 864 30 36

315 and 355 G 355/24 PF 1250 1330 125 36 130 - 946 1064 30 60

H

L

Y

Z

X

A

E

K

ØJ

Option : Standard slide rails (conforming to the NFC 51-105 standard) These steel slide rails are supplied with tension screws and 4 nuts and bolts for fixing the motor onto the slide rails, but withoutslide rail fixing bolts.

Protect all rotating parts before switchingon.

2.4 - Electrical guidelines2.4.1 - Maximum power of motors supplied directly(kW) from the mainsThis extract from the C 15.100 standard indicates thelimits tolerated for D.O.L. starting of a motor connected tothe mains power supply.

2.4.2 - Limiting problems caused by motor startingIn order to preserve the installation, any significanttemperature rise in the cabling conduits must beprevented, whilst ensuring that the protective devices donot intervene during starting.Problems affecting the operation of other devicesconnected to the same source are due to the drop involtage caused by the starting current, which may beseveral times greater than the current consumed by themotor at full load (approximately 7 times); refer to theLEROY-SOMER induction motor technical catalogue.Even though mains supplies increasingly allow D.O.L.starts, there are installations where the starting currentmust be reduced.Jolt-free operation and soft starting ensure greater easeof use and an increased lifespan for the machines beingdriven.Cage induction motor starting is characterised by twoessential values :- starting torque- starting current.The starting torque and the resistive torque determine thestarting time.Depending on the load, it is possible to adapt the torqueand current to the machine starting time and to the pos-sibilities of the mains power supply.The five essential modes :- D.O.L. starting,- star / delta starting,- soft starting with autotransformer,- soft starting with resistances,- electronic soft starting.

The "electronic" starting modes control the voltage at themotor terminals during the whole starting phase andenable jolt-free and very soft starting.

2.4.3 - LEROY-SOMER "Digistart" electronic starter

This is a multi-function electronic system with a micro-controller, which is used with all 3-phase cage inductionmotors.It allows motor soft starting with :- reduced starting current,- jolt-free soft acceleration, obtained by controlling thecurrent consumed by the motor.After starting, the DIGISTART performs additional motormanagement functions in its other operating phases :steady state and deceleration.

- 9 to 500 kW models- Power supply : 220 to 700 V - 50/60 Hz

DIGISTART is economical to install as only an additionalfuse switch is needed.

2.4.4 - Other control systems :frequency inverters, flux vector control, etc.

Special precautions need to be taken when standardinduction motors are used for variable speed control,powered by a frequency inverter or voltage controller :

During prolonged operation at low speed, coolingefficiency is greatly diminished. It is therefore advisableto install a forced ventilation unit that will workindependently of the machine and provide a constantflow of air.During prolonged operation at high speed, the fan maymake excessive noise. It is again advisable to install aforced ventilation unit.

10


* "Other locations" include premises such as in theservice industry, the industrial sector, general servicesto housing and the agricultural sector, etc.Prior inspection by the energy distributor is necessaryfor motors driving a machine with high inertia, motorswith time-delay starting, and brake motors or reversersusing reverse current.

Types of motor

Location

D.O.L starting

otherstartingmodes

Residential areas 1.4 5.5 11Other locations * Overhead power lineUnderground supply

35.5

1122

2245

3-phase 400 (380) VSingle-phase

230 (220) V

1/3

2/3

1

0 1/3 2/3 1

N / Ns

Forced ventilation (temperature rise)

Natural cooling Forced ventilation for N > 3600 min-1

Operating speed /Synchronous speed

Effect ofcooling

P/PN = f (N/NS)

The reference voltage (inverter output ormotor input) is 400V at 50 Hz : the inverter

should therefore supply a constant voltage/frequency signal to the motor within the operatingrange up to 50 Hz. Outside the 25/50 Hz range,check that the ventilation and the rotation mecha-nism are suitable.

2.4.6 - Earthing (see section 2.5.5)

2.4.7 - Starting slip-ring motorsIn the case of a slip-ring wound rotor motor, install thestarting device (electrolytic starter, rheostat, etc) as closeas possible to the motor and use cables with maximumcross-section. Any thermal protection and heating devices are placed inthe terminal box.

2.4.8 - Power factor compensation capacitors

2.4.9 - Protecting the motors2.4.9.1 - Line protection

Setting the thermal protective device This must be set at the level of current shown on themotor nameplate for the voltage and frequency of theconnected mains supply.

Thermal magnetic protectionThe motor must be protected by a thermal magneticdevice, sited between the isolating switch and the motor.These protective devices safeguard motors fully fromnon-transient overloads. This device can be fitted with a fused circuit-breaker.

Built-in direct thermal protectionFor low rated currents, bimetallic strip-type protectionmay be used. The line current passes through the strip,which shuts down or restores the supply circuit asnecessary. The design of this type of protection allowsfor manual or automatic reset.

2.4.9.2 - Built-in indirect thermal protectionThe motors can be equipped with optional heat sensors;these sensors can be used to monitor temperature risesat "hot spots" :- overload detection,- cooling check,- monitoring strategic points for installation maintenance.It must be emphasized that these sensors cannot everbe used to directly control the motor operating cycles.

If the frequency exceeds 50 Hz :

a - Make sure that all the components belonging to thesame transmission are correctly aligned.

b - The voltage remains constant above 50 Hz.

c - The power supplied by the motor up to 60 Hzremains constant (make sure that the powerconsumption of the load does not vary irregularly in thisfrequency range).

d - Make sure that the speed of the application does notexceed the speed values in the table below :

e - For all other frequency and/or voltage limits, additionalprecautions should be taken concerning derating, bearings,cooling, noise, etc : please consult Leroy Somer.

2.4.5 - Permissible starting times and locked rotortimesStarting times must remain within the limits shown below,on condition that the number of starts over the course ofan hour is 6 or less.Three successive cold starts, and 2 consecutive warmstarts are allowed.

Permissible motor starting times as a function of the ratio ID / IN for

cold starts.

11


2 poles 4 poles 6 poles

56 18000 18000 18000

63 16000 16000 16000

71 16000 16000 16000

80 15000 15000 15000

90 12000 12000 12000

100 10000 10000 10000

112 10000 10000 10000

132 7500 7500 7500

160 6000 6000 6000

180 5600 5600 5600

200 4500 4500 4500

225 4100 4100 4100

250 4100 4100 4100

280 3600 3600 3600

315 3600 3000 3000

Frame sizeSpeed of rotation min-1

3 4 5 7 10 153

4

5

6

789

10

15

20

ID_IN

St

For the various starting devices (eg :rheostats, LS polystart) please refer to the

relevant installation and maintenance manuals.

Before carrying out any work on the motoror cubicle, make sure that the capacitors

are isolated and/or discharged (note the voltageat the terminals).

12


Type Operatingprinciple

Operatingcurve

Breaking capacity (A) Protection provided Mounting

Number required*

Normally closedthermostat

PTO

bimetallic strip,

indirectly heated,

operates on opening (0) 2.5 at 250 Vwith cos ϕ 0.4

general surveillancefor non-transient

overloads

Mounted on control circuit

2 or 3 in series

Normally openthermostat

PTF

bimetallic strip,

indirectly heated,

contact on closing (F) 2.5 at 250 Vwith cos ϕ 0.4

general surveillancefor non-transient

overloads

Mounted on control circuit

2 or 3 in parallel

Positive temperaturecoefficient thermistor

PTC

variable non-linearresistor, indirectly

heated0

general surveillancefor transient overloads

Mounted with associated relayon control circuit

3 in series

Thermocouples

T (T<150°C)Constantan copper

K (T<1000°C)Copper-Nickel

Peltier effect 0continuous surveillanceat hot spots at regular

intervals

Mounted on control panelswith associated reading device

(or recording device)

1 per hot spot

Platinum resistancethermometer

PT 100

Variable linearresistance,

indirectly heated0

high accuracy continuous surveillance

at key hot spots

Mounted on control panelswith associated reading device

(or recording device)

1 per hot spot

- N.R.T. : nominal running temperature- The N.R.T.s are chosen according to the position of the sensor in the motor and the class of temperature rise.* The number required affects the protection of the windings.

I

O TNF

T

I

F TNF

T

R

TNF

T

V

T

R

T

Protection against condensation : Space heatersIdentification : 1 red labelA glass fibre flexible resistor is fixed on 1 or 2 coil endturn(s) which heats the machines when stopped andtherefore prevents any condensation inside the machines.

Power supply : 230V single phase unless otherwiserequested by the customer.If the drain plugs underneath the motor have not beenremoved during installation, they must be openedapproximately every six months.

Alarm and early warningAll protective equipment may be backed up by anothertype of equipment (with a different N.R.T.) . The firstdevice will then act as an "early warning" system (light orsound signals given without shutting down the powercircuits), and the second device will be the actual alarm,shutting down the power circuits.

Warning : depending on the type ofprotective device, the motor may be left

switched on. The mains supply must bedisconnected before any work is carried out inthe terminal box or the cubicle.

Warning : make sure that the spaceheaters are switched off before any work

is carried out in the terminal box or cubicle.

Tightening capacity

13


Type of

cable gland

Min cable Ø

(mm)

Max cable Ø

mm)

PE 9 6 8

PE 11 7 10

PE 13 8 12

PE 16 10 15

PE 21 14 19

PE 29 18 24

PE 36 24 30

PE 42 30 35

PE 48 35 40

2" 1/2 40 50

3" 40 60

4" 60 80

2.5 - Supply connection

2.5.1 - Terminal boxPlaced as standard on the top of the motor near thedrive end for types IM B3, B5, B14, the terminal box hasIP 55 protection and is fitted with a cable gland.Warning : even for flanged motors, the position of theterminal box cannot easily be modified as the condens-ation drain holes must remain at the bottom.

Cable gland (NFC 68 311 and 312 standards)The standard position of the cable gland (1) is on theright, seen from the motor drive end.

A Standardposition

2 4

1

3

Standardposition

When the non-standard position of the cable gland hasnot been correctly specified in the order, or is no longersuitable, the symmetrical construction of the terminal boxenables it to be placed in any of the 4 directions exceptposition 2 on flange-mounted motors (B5).A cable gland must never be opened upwards.

Ensure that the cable entry radius of curvature preventswater from entering via the cable gland.

Adapt the cablegland, and its

reducer if it has one, tothe diameter of thecable being used.In order to preserve the motor's original IP55protection, it is essential to tighten the cablegland seal correctly (so that it cannot beunscrewed by hand).When there are several cable glands and someare not being used, ensure that they are alwayscovered and tighten them so that they too cannotbe unscrewed by hand.

Ø m

in

Ø m

ax

14


1 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 100 2 3 4 5 2 3 4 56 7 8 9 100010

20

30

40

50

60

708090

100

200

300

400

500

600

700800900

1000Length in m Maximum voltage drop 3 % (3-phase circuits - copper cable)

Current in ampsStarting current

1 1.5 2.5 4 6 10 16 35 50 75 9025 Conductor cross-section

2.5.2 - Cross-section of the power supply cablesThe higher the current, the greater the voltage drop willbe (NFC 15.100 standard or end user's national stan-dard). The voltage drop should therefore be calculated forthe starting current to see if this is suitable for the applica-tion. If the most important criterion is the starting torque (or

the starting time), the voltage drop should be limited to 3%maximum (the equivalent of a loss of torque of around 6 to8%).The chart below can be used to select the conductorsaccording to the length of the supply cable and the startingcurrent, in order to limit the voltage drop to 3% maximum.

For motors with flying leads, the cable should not be used for handling.

2.5.3 - Terminal block wiring diagramAll motors are supplied with a wiring diagram placed inthe terminal box*.All connectors required to make connections can befound inside the terminal box.Single speed motors are fitted with a block with 6terminals conforming to the NFC 51 120 standard,identified in line with the IEC 34 - 8 (or NFC 51 118)standard.

2.5.4 - Direction of rotationWhen the motor is powered by U1, V1, W1 or 1U, 1V,1W from a direct supply L1, L2, L3, it turns clockwisewhen seen from the drive end.If any two of the phases are changed over, the motor willrun in an anti-clockwise direction. (Make sure that themotor has been designed to run in both directions). Warning : motor with backstop : starting in the wrongdirection will destroy the backstop (see arrow on motorhousing).If the motor is fitted with thermal protection or spaceheaters, these should be connected to screw terminalsor terminal blocks with labelled wires (see section 2.4).

2.5.5 - Earth terminalThis is situated inside the terminal box; in some cases,the earth terminal can be situated on one of the feet oron one of the cooling fins (round motors). It is indicatedby the sign :

* If necessary, this diagram should be requested fromthe supplier, specifying the type and number of motor asshown on the nameplate.

2.5.6 - Connection of power supply cables tothe blockCables must be fitted with connectors suitable for thecable cross section and the terminal diameter.They must be crimped as instructed by the connectorsupplier.Connection must be carried out with connector restingon connector (see diagrams below):

Tightening torque (N.m) on the terminal block nuts.

If using cables without connectors, attach some calipers.

If any nuts on brass terminal blocks are lost, they mustbe replaced by brass nuts, not ordinary steel ones.When closing the box, check that the seal is correctlypositioned.

15


Temperature probe

Terminal M4 M5 M6 M8 M10 M12 M 16

Steel 2 3.2 5 10 20 35 65

Brass 1 2 3 6 12 20 50

Particular attention must be given to theinformation on the nameplate in order to

select the correct connections for the supplyvoltage.

As a general rule, check that no nut,washer, nor any other foreign body has

either fallen in or come into contact with thewinding.

The motor must be earthed conforming tocurrent regulations (protection of workers).

3 - NORMAL MAINTENANCE

Checking after startingAfter approximately 50 hours of operation, check that thefixing screws of the motor and the coupling device aretightened; and for chain or belt transmissions, check thatthe tension is correctly adjusted.

CleaningTo ensure the motor can operate correctly, take steps toprevent dust and foreign bodies from clogging the covergrille and the housing fins.Precautions : check the motor is totally sealed (terminalbox, drain holes, etc) before carrying out any cleaningoperation.Dry cleaning (vacuuming or compressed air) is alwayspreferable to wet cleaning.

Draining condensation waterVariations in temperature cause condensation to beformed inside the motor, which must be removed beforeit affects motor operation.Condensation drain holes, situated on the lower part ofthe motors with regard to their operating position, aresealed with plugs which must be removed every sixmonths then replaced (if they were not replaced, thedegree of motor protection would be invalidated). Cleanthe holes and the plugs before reassembly.Note : When there is high humidity and significanttemperature variation, we recommend a shorter period.When there is no risk to motor protection, thecondensation drain plugs can be removed.

3.1 - Greasing3.1.1 - Type of greaseWhen the bearings are not permanently greased, thetype of grease is shown on the nameplate.The standard grease is ESSO UNIREX N3 and werecommend its use for subsequent greasing. Avoidmixing greases.

3.1.2 - Permanently greased bearingsFor LS motors ≤ 180 MT and FLS(C) motors ≤ 132 M,the bearings defined enable long grease life andtherefore lubrication for the lifetime of the machine. Thegrease lifetime according to speed of rotation andambient temperature is shown on the following chart.

3.1.3 - Bearings without grease nipplesLS 180 L and LS 200 LT type motors are factorylubricated. Lubricant lifetime (in hours) under normal operatingconditions is given in the table below for a machine withhorizontal shaft operating at 50 Hz in ambienttemperatures of 25°C and 40°C.

3.1.4 - Bearings with grease nipplesThe bearings are factory lubricatedFor LS motors > 200 LT (or on request for types 160, 180,200 LT) and for FLS(C) and FLSB motors ≥160, thebearings are fitted with Tecalemit–Hydraulic greasenipples type M8 x 125.

16

10

0

20

30

40

50

60

AmbT (°C)

3010 20

N = 750 min -1

N = 1500 min -1

N = 1000 min -1

5 15 25

N = 3000 min -1

Life in 000's of hours


Greasing intervals, quantity and type ofgrease are indicated on the nameplates.

Please refer to these to ensure that the bearingsare correctly greased.

Cleaning must always be carried out at lowpressure from the centre of the motor

outwards, to avoid dust and particles gettingunder the shaft seals.

The interval between two greasings mustnever exceed 2 years, even if it involves a

period of storage or prolonged downtime.

No. of poles Amb. T 180 frame 200 frame

40 °C 11 000 9 000

25 °C 22 000 18 000

40 °C 23 000 20 000

25 °C 45 000 40 000

40 °C 28 000 26 000

25 °C 45 000 45 000

40 °C 33 000 31 000

25 °C 45 000 45 0008 p

4 p

2 p

6 p

3.2 - Bearings maintenance3.2.1 - Checking bearingsWhen you detect on the motor :- a noise or abnormal vibration,- abnormal temperature rise in the bearing when it iscorrectly greased,the state of the bearings must be checked.Damaged bearings must be replaced as soon aspossible to prevent worse damage to the motor and thedriven equipment.When one bearing needs to be replaced, the otherbearing must also be replaced.The seals should be changed as a matter of coursewhen the bearings are changed.The free bearing allows the rotor shaft to expand (makesure it is identified during dismantling).

3.2.2 - Servicing bearingsBearings without grease nippleDismantle the motor (see section 6.1); remove the oldgrease and clean the bearings and accessories with adegreasing agent.Fill with new grease : the new grease should fill 50% ofthe capacity of the bearing.

Bearings with grease nippleAlways begin by cleaning the waste grease channelWhen using the type of grease shown on the nameplate,remove the covers and clean the grease nipple heads.When using a different type of grease, dismantle themotor and clean the bearings and accessories with a de-greasing agent (carefully clean the grease feeder andoutlet channels) in order to remove the old grease beforeregreasing.To ensure bearings are correctly greased, fill theretainers, end shields and grease channels to capacityand fill the bearings to 30% of their capacity.Then turn the motor to distribute the grease.

Warning : Too much grease causes the bearing to overheatdramatically (statistics show that more bearings aredamaged through too much grease than too littlegrease).

Important note :The new grease must be recently manufactured, ofequivalent standard and must not contain any impurity(dust, water, or other).

3.3 - Slip-ring motorsMaintaining brushes and slip-ringsOn slip-ring rotor motors, check the state of thecommutator every month. The slip-rings should beclean, not greasy, smooth and should show no sign ofroughness. If the commutator is clogged, clean it with apetrol-soaked rag.Ensure that the brushes :- slide freely in their cage- are in uniform contact with the slip-rings- show no sign of wear up to the shuntIf the brushes are badly worn, replace them with newbrushes of the same number and type as the original oneswith a worn contact surface. To do this :- roughen the bend before inserting the brushes into thebrush-holders- continue, using fine emery paper wound round the slip-rings- finish with very fine sandpaper in the usual directionof rotationAfter running in, check that there are no abrasive grainsleft on the surface of the brushes and then clean themthoroughly.It is also strongly recommended that dry compressed airshould frequently be blown around the inside of themachine to clear away carbon dust from the bearings,brush-holders, commutator, commutator terminals andwindings. The insulation should be wiped with a clean cloth.When the motor is rotating : make sure there are nosparks below the brushes.

17


4 - PREVENTIVE MAINTENANCE

LEROY-SOMER, in its continuous search for ways tohelp our customers, has evaluated numerous methods ofpreventive maintenance.The diagram and table below give the recommendedequipment to use and the ideal positions on the motor totake measurements of all parameters which can affectoperation of the machine, such as eccentricity, vibration,winding insulation, etc.This system allows the user both to monitor theperformance of the equipment during use, and, in theevent of a fault to give measurements which will allowLEROY-SOMER to analyse and diagnose the causesquickly and efficiently, ensuring the minimum downtime.

18


M 01V M 02V

M 02A

M 02HM 01H

1

3

42

5

Measurement points

M 01V M 01H M 02V M 02H M 02A Shaft E01 E02 E03

➀ Accelerometer Vibration measurement • • • • •➁ Photo-electric cell Speed and phase (balancing) measurement •➂ Clamp ammeter Current measurement (D.C. and 3-phase A.C.) • • •➃ Voltage probe Voltage measurement • • •➄ Infra-red probe Temperature measurement • •

Detector Measurement

5 - TROUBLESHOOTING GUIDE

19


Incident Possible cause Action

Abnormal noise Originating in motor or driven machine ? Uncouple the motor from the driven equipmentand test the motor on its own

Noisy motor Mechanical cause : if the noise persists afterswitching off the electrical power supply

- vibration- check that the key conforms with the type ofbalancing (see section 2.3)

- damaged bearings - change the bearings

- mechanical friction : ventilation, coupling

- check

Electrical cause : if the noise stops afterswitching off the electrical power supply

- check the power supply at the motor terminals

- normal voltage and 3 phases balanced - check terminal block connection andtightening of the connectors

- abnormal voltage - check the power supply line

- phase imbalance - check the winding resistance

Motor heats up abnormally

- faulty ventilation - monitor the environment- clean the ventilation cover and the coolingfins- check the fan is correctly mounted on the shaft

- faulty supply voltage - check

- terminal connection fault - check

- overload- check the current drawn against the currentshown on the motor nameplate

- partial short-circuit- check the electrical continuity of the windingsand/or the installation

- phase imbalance - check the winding resistance

Motor does not start no load- mechanical locking- broken supply line

When switched off :- check the shaft rotates freely by hand- check fuses, electrical protection, startingdevice

on-load- phase imbalance

When switched off :- check the direction of rotation (phase order)- check the resistance and the continuity of thewindings- check electrical protection

Slip-ring motors- open rotor circuit - connect the rotor to the starting device

6 - CORRECTIVE MAINTENANCE : GENERAL INFORMATION

- open the terminal box, mark the wires and theirposition,- disconnect the power supply wires,- uncouple the motor from the driven equipment.Always use an extractor to remove any devices mountedon the shaft end of the motor.

6.1 - Dismantling the motorSee the detailed instructions for the range of motorinvolved (see following pages). It is advisable to mark the shields in relation to the statorand the direction in which the rotor fan is mounted.

6.2 - Before reassemblyStator :- any dust must be removed from the stator : if the winding needs to be cleaned, suitable liquid mustbe used : dielectric and inert on the insulation and theexternal finish,- check the insulation (see section 2.1) and if necessary,dry it out,- clean the flanges carefully, remove all traces of impacton the mating surfaces if necessary.Rotor :- clean and check the bearing running surfaces; if thereis any damage, renew the running surfaces or replacethe rotor.- check the threads, the keys and their housing. End shields :- clean any traces of dirt (old grease, gathered dust),- clean the bearing housings and the flange,- if required, apply some antiflash varnish inside the endshields,- clean the bearing caps and the grease valves carefully.

6.3 - Mounting the bearings on the shaftThis operation is very important, as the slightestindentation on the bearing tracks would cause noise andvibration.Lightly lubricate the running surfaces of the shaft.They can be mounted correctly in different ways :

- cold state : it must be fitted without impact and using aspanner (a hammer should not be used) ; the forcerequired must not be transferred to the bearing track.Therefore, hold onto the internal cage (do not press onthe seal shield for dust and damp proof bearings).

- hot state : heat the bearing from 80° to 100°C : in adryer, in an oven or on a heating plate. (a blowtorch should never be used for heating, norshould an oil-bath).

After a bearing has been dismantled and reassembled,all the spaces between the seals and labyrinth sealsshould be filled with grease in order to keep dust out andprevent the rusting of machined parts.See the detailed instructions for the relevant motor rangein the following pages.

6.4 - Reassembling the motorBe careful to replace the stator in its originalposition. It is as important to centre the stack oflaminations (generally with terminal box facing forward)as to position the drain holes correctly if they are on thehousing.Tightening the tie rodsThese should be tightened diagonally to the torqueindicated (see below)

6.5 - Reassembling the terminal boxReconnect all the power supply wires according to thediagram or marking carried out before dismantling. To ensure the box is completely dust and damp proof :ensure the cable glands on the box and the cable(s) aretightened, and check that the seal is correctly insertedbefore closing. For terminal boxes fitted with a cone(item 89 on the exploded views) and/or a cable glandbaseplate, check that the seal is correctly insertedbefore closing. Ensure that all the terminal boxcomponents are tightened correctly.

Note : It is advisable to carry out a test of the motorat no load- If necessary, repaint the motor.- Mount the transmission device on the motor shaftextension and reinstall the motor on the machine to bedriven.

20


1 4

3 2

Tightening torque of the tie rods

Type screw/ rod ØTightening torque

N. m ± 5%56 M4 2,563 M4 2,571 M4 2,580 M5 490 M5 4100 M5 or M6 4112 M5 or M6 4132 M7 10160 M 8 18180 MT/LR M 8 18180 L M 10 25200 M 10 25225 ST/MR M 10 25225 MK M 12 44250 M 12 44280 M 12 44315 M 12 44

First switch off and lock the power supply

e

h

n x ØS

D

E

C

7 - POSITION OF THE LIFTING RINGS

Labour regulations stipulate that all loads above 25 kgshould be fitted with lifting devices to facilitate handling.

The positions of the lifting rings and the minimum dimen-sions of the loading bars are given below in order to helpwith preparation for handling the motors. Without theseprecautions, there is a risk of warping or crushing someequipment, such as the terminal box, protective coverand drip cover.

• Horizontal position

• Vertical position

21


e

A

h

2 x Øt

Horizontal position

A e min h min Øt

100 120 200 150 9

112 120 200 150 9

132 160 200 150 9

160 200 160 110 14

180 MR 200 160 110 14

180 L 200 260 150 14

200 270 260 165 14

225 ST/MT 270 260 150 14

225 M 360 265 200 30

250 360 380 200 30

280 360 380 500 30

315 ST 310 380 500 17

315 M/L 360 380 500 23

355 310 380 500 23

400 735 710 500 30

450 730 710 500 30

Type

View from above Side view

Vertical position

C E D n ØS e min * h min

160 320 200 230 2 14 320 350

180 MR 320 200 230 2 14 320 270

180 L 390 265 290 2 14 390 320

200 410 300 295 2 14 410 450

225 ST/MT 410 300 295 2 14 410 450

225 M 480 360 405 4 30 540 350

250 480 360 405 4 30 540 350

280 S 480 360 485 4 30 590 550

280 M 480 360 585 4 30 590 550

315 ST 590 - 590 2 17 630 550

315 M/L 695 - 765 2 24 695 550

355 755 - 835 2 24 755 550

400 810 350 1135 4 30 810 600

450 960 400 1170 4 30 960 750

Type

* : if the motor is fitted with a drip cover, allow 50 to 100 mm more, inorder to avoid damaging it when the load is swung.

Motors intended for use in the verticalposition may be delivered in the horizontalposition on a pallet. When the motor is

pivoted, under no circumstances should the shaftbe allowed to touch the ground or the bearingsmay be irreparably damaged.

Position of the lifting rings for lifting themotor only (uncoupled from the machine).

8 - SPARE PARTSFor any order for spare parts, the completemotor designation, its number and theinformation shown on the nameplate must beindicated (see section 1).

The part numbers can be found on theexploded diagrams and their description in theparts list (see section 6).

With a flanged motor, indicate the type of flangeand its dimensions (see below).

A large network of service outlets can rapidlysupply any parts required.

In order to ensure that our motors are safe andoperate correctly, we recommend the use ofspare parts from the original manufacturer.

If this recommendation is not followed, themanufacturer accepts no responsibility in theevent of damage.

22


LA T

N PJ6

M

n Ø S

T

N PJ6

M

n Ø M.S

IM 3001 (IM B5)

IM 3601 (IM B14)

23


9 - LS cage motors ................................................................................................................................24 to 33

DISMANTLING AND REASSEMBLY PROCEDURES

10 - FLS-FLSC cage motors ............................................................................................. 34 to 45

11 - FLSB-FLSLB slip-ring motors ........................................................................46 to 53

9 - LS CAGE MOTORS9.1 - LS 56 to LS 160 MP/LR motors9.1.1 - Dismantling- take off the protective cover (13) after removing thescrews (27).- pull out the fan (7) using a hub remover or failing thiswith 2 diametrically opposed levers (eg. 2 screwdrivers)using the shield for support (6).- remove the tie rods (14).- remove the key (21).- using a wooden mallet, hit the shaft near the fan toloosen the drive end shield (5).- remove the rotor shaft (3) and the DE shield (5) takingcare not to knock the winding.- remove the shield on the side of the fan (6).- recover the preloading washer (59) and the seal of theNDE shield (54) for LS 100, 112 and 132 motors.- remove the circlip (60) from flanged motors usingangled circlip pliers.- separate the DE shield from the rotor shaft.- the shaft can then be seen with its 2 bearings andpossibly the circlip.Use a bearing remover to take out the bearings, takingcare not to knock the running surfaces of the shaft.

9.1.2 - Reassembling motors without circlip- mount the bearings on the rotor shaft.- insert the rotor into the stator taking every precautionnot to knock the winding.- mount the DE shield (5).- for LS 56, 63, 71 motors, first fit the seal (39) withgrease.- mount the NDE shield (6) after placing the preloadingwasher (59) in the bearing housing.- position the tie rods (14) and tighten the nuts diagonallyup to the recommended torque (see section 6.4).- mount the shield grease seals (39, 54, 308).- mount the fan (7) using a rod to bed it in position.- ensure that the motor turns freely by hand and thatthere is no radial play.- put the protective cover back on (13) and fix it with thescrews (27).

9.1.3 - Reassembling motors with flange and circlip- mount the DE bearing in the flange (5), using theexternal slip-ring for support.- fit the circlip (60).- mount this assembly on the rotor (3) using the innerbearing slip-ring for support.- mount the NDE bearing on the rotor.- insert the rotor (3) and shield (5) assembly in the stator,taking every precaution not to knock the winding.- mount the NDE shield (6) after placing the preloadingwasher (59) in the bearing housing.- position the tie rods (14) and tighten the nuts diagonallyup to the recommended torque (see section 6.4).- mount the shield seals (39, 54, 308) with grease.- mount the fan (7) using a rod to bed it in position.- ensure that the motor turns freely by hand and thatthere is no axial play.- put the protective cover back on (13) and fix it with thescrews (27).- replace the key (21).

24

LS 3-phase TEFV cageinduction motorsaluminium alloy frame

��

��

��

��6 5

397

59

50 30

��

��

��6 5

39307

59 60

50

��

��

� ��59 56

3087 50 30

��

��

� ��6 5

3950 307

59 60

��

��

��

6 5

30854

59

50 30

��

��

6 5

3950 3054

59 60

LS 56 - LS 63 - LS 71foot mounted

LS 56 - LS 63 - LS 71flange mounted (or foot/flange)

LS 80 - LS 90 foot mounted

LS 80 - LS 90 flange mounted (or foot/flange)

NDE DE NDE DE

NDE DE NDE DE

NDE DE NDE DE

LS 100 - LS 112 - LS 132 foot mounted

LS 100 - LS 112 - LS 132flange mounted (or foot/flange)

��

��

��

6 5

30854

59

50 30

��

��

6 5

3950 3054

59 60

NDE DE NDE DE

LS 160 MP/LR foot mounted

LS 160 MP/LRflange mounted (or foot/flange)

LS 56 to LS 160 MP/LRNo. Description No. Description No. Description

1 Wound stator 22 Shaft extension washer 59 Preloading (wavy) washer

2 Frame 23 Shaft extension screw 60 Circlip

3 Rotor 25 Lifting ring 71 a Plastic terminal box (frame size ≤ 112)

5 Drive end shield 26 Nameplate 71 b Metal terminal box

6 Non drive end shield 27 Fan cover screw 78 Cable gland

7 Fan 30 Drive end bearing 84 Terminal block

13 Fan cover 39 Drive end seal 85 Set screw

14 Tie rods 50 Non drive end bearing 98 Connectors

21 Shaft extension key 54 Non drive end seal 308 Labyrinth seal

25


LS 56 to LS 160 MP/LR

71 b

78

98

213

5

22

5

5

308

23

IM B3

IM B14

IM B5

13

7

2514

8554

684

262

160

5950

27

30

71 a

39

39

��

��

��

3960 50 30 38

6 53 33 5

54

62 40

LS 160 M/L - LS 180 MT/LR flange mounted (or foot/flange)

drive end roller bearings

��

��

��54 3950 30 38

6 59 33 5 40

NDE DE

LS 160 M/L - LS 180 MT/LRflange mounted (or foot/flange)

standard bearings

9.2 - LS 160 M/L, LS 180 MT/LR motors

9.2.1 - Dismantling- take off the protective cover (13) after removing thescrews (27).- pull out the fan (7) using a hub remover or failing thiswith 2 diametrically opposed levers, using the shield (6)for support.- take out the key (21) and remove the seals (39 and 54for foot mounted motors)(54 for flanged motors). - unscrew the tie rods (14) and then remove them.- unscrew the bearing retainer (33) fixing screws (40)when using a flanged motor or if the drive end bearing islocked.- using a bronze drift, remove the shields (5 and 6) bytapping on the shield bosses, and recover the preloadingwasher (59).- remove the circlip (38) if necessary (flanged motor).- remove the rotor (3) from the stator (1) taking care notto touch the winding.- take out the bearings (30) and (50) using a bearingremover while protecting the end of the shaft extensionwith a washer, and taking care not to knock the runningsurfaces of the shaft.

9.2.2 - Reassembly- see section 6.1 before reassembly.- if necessary, insert the bearing retainer (33) at the rotordrive end and mount new bearings on the shaft, seesection 6.3 on mounting bearings.- mount the circlip (38) for flanged motors.- insert the rotor (3) into the stator (1) taking everyprecaution not to knock the winding.- place the preloading washer (59) with a small amountof grease at the back of the bearing cage of the NDEshield (6), then remount the NDE shield (6) bypositioning it on the stator.- if there is a bearing retainer (33), screw a rod with thesame thread diameter as the screws (40) into one of thetapped holes of the bearing retainer to maintain itsangular position when remounting the drive end shield(5).when there is a flange; mount a new seal (39) withspring facing outwards.- remount the shield (5) taking care to allow for anybearing retainer.- put the tie rods in place (14) and tighten the nutsdiagonally up to the recommended torque (see section6.1).- if necessary, fix the bearing retainer (33) with its ownscrews.- mount the shield seals with grease (54 non drive end)(39 drive end for foot mounted motors).- mount the fan (7) using a rod to bed it in position.- ensure that the rotor turns freely by hand (and thatthere is no axial play if there is a locked end shield). - put the protective cover back on (13) and fix it with thescrews (27).- replace the key (21).

26


��

��

��

54

5

50

6 59

3930

��

��

��

��

� �3954 50 3830

6 59 533 40

NDE DE

NDE DE

LS 160 M/L - LS 180 MT/LRfoot mounted (except V6)

standard bearings

LS 160 M/L - LS 180 MT/LRIM V6 foot mountedstandard bearings

��

��

��

��

��

��

4062 6 53 33 5

3960 50 30 3854

LS 160 M/L - LS 180 MT/LR foot mounted


NDE DE NDE DE

LS 160 M/L, LS 180 MT/LRNo. Description No. Description No. Description

1 Wound stator 14 Tie rods 39 Drive end seal

2 Frame 21 Key 40 Cover fixing screw

3 Rotor 26 Nameplate 50 Non drive end bearing

5 Drive end shield 27 Fan cover screw 54 Non drive end seal

6 Non drive end shield 30 Drive end bearing 59 Preloading (wavy) washer

7 Fan 33 Drive end bearing retainer 70 Terminal box

13 Fan cover 38 Drive end bearing circlip 74 Terminal box lid

27


LS 160 M/L, LS 180 MT/LR

1327

754

14

65950

7470

3

21

39

5

301

3833

26

2

40

9.3 - LS 180 L, LS 200, LS 225 ST/MT/MR motors

9.3.1 - Dismantling- take off the protective cover (13) after removing thescrews (27).- pull out the fan (7) using a hub remover or failing thiswith 2 diametrically opposed levers, using the shield (6)for support.- take out the key (21) and remove the seals (39 and 54for foot mounted motors)(54 for flanged motors). - unscrew the tie rods (14) and then remove them.- unscrew the bearing retainer (33) fixing screws (40))when using a flanged motor or if the drive end bearing islocked.- using a bronze drift, remove the shields (5 and 6) bytapping on the shield bosses, and recover the preloadingwasher (59).- remove the circlip (38) if necessary.- remove the rotor (3) from the stator (1) taking care notto touch the winding.- take out the bearings (30) and (50) using a bearingremover while protecting the end of the shaft extensionwith a washer, and taking care not to knock the runningsurfaces of the shaft.

9.3.2 - Reassembly- see section 6.1 before reassembly.- if necessary, insert the bearing retainer (33) at the rotordrive end and fit new bearings on the shaft, see section6.3 on mounting bearings.- fill with new grease : the new grease should fill 50% ofthe capacity of the bearing.- mount the circlip (38) if necessary.- insert the rotor (3) into the stator (1), taking everyprecaution not to knock the winding.- place the preloading washer (59) with a small amountof grease at the back of the bearing cage of the NDEshield (6), then remount the NDE shield (6) bypositioning it on the stator.- if there is a bearing retainer (33), screw a rod with thesame thread diameter as the screws (40) into one of thetapped holes of the bearing retainer to maintain itsangular position when remounting the drive end shield(5).when there is a flange; mount a new seal (39) withspring facing outwards.- remount the shield (5) taking care to allow for anybearing retainer.- put the tie rods in place (14) and tighten the nutsdiagonally up to the recommended torque (see section6.1).- if necessary, fix the bearing retainer (33) with its ownscrews (40).- mount the shield seals with grease (54 non drive end)(39 drive end for foot mounted motors).- mount the fan (7) using a rod to bed it in position.- ensure that the rotor turns freely by hand (and thatthere is no axial play if there is a locked end shield). - put the protective cover back on (13) and fix it with thescrews (27).- replace the key (21).

28


��

��

��

54

5

50

6 59

3930

��

��

��54 3950 30 38

6 59 33 5 40

��

��

��

��

� �3954 50 3830

6 59 533 40

NDE DE NDE DE

NDE DE

LS 180 L (except IM V6) foot mounted

standard bearings

LS 180 L - LS 200 flange mounted (or foot/flange)

standard bearings

LS 180 L (IMV6) - LS 200 foot mounted

standard bearings

��

��

��

��

��

��

4062 6 53 33 5

3960 50 30 3854

LS 180 L - LS 200 LS 225 ST/MT/MR

foot mounteddrive end roller bearings

��

��

��

3960 50 30 38

6 53 33 5

54

62 40

LS 180 L - LS 200 LS 225 ST/MT/MR

flange mounted (or foot/flange)drive end roller bearings

NDE DE NDE DE

��

��

��

��

6 40

3954

59 33 5

60 50 30 38

� ��

��

��

��

3954 60 50 30 38

406 59 33 5

NDE DE NDE DE

LS 225 ST/MT/MRfoot mounted

standard bearings

LS 225 ST/MT/MRflange mounted (or foot/flange)

standard bearings

LS 180 L, LS 200, LS 225 ST/MT/MRNo. Description No. Description No. Description

1 Wound stator 25 Lifting ring 42 Grease nipples (optional LS 180 L, LS 200)

2 Frame 26 Nameplate 50 Non drive end bearing

3 Rotor 27 Fan cover screw 54 Non drive end seal

5 Drive end shield 30 Drive end bearing 59 Preloading (wavy) washer

6 Non drive end shield 33 Drive end bearing retainer 70 Terminal box

7 Fan 38 Drive end bearing circlip 74 Terminal box lid

13 Fan cover 39 Drive end seal 319 Right foot

14 Tie rods 40 Cover fixing screw 320 Left foot

21 Key

29


LS 180 L, LS 200, LS 225 ST/MT/MR

5

39 538

3033

320

319

262

213

170

74 25

13

50 59 6 54 147

42

27

40

9.4 - LS 225 MK, LS 250, LS 280 SP/MP motors

9.4.1 - Dismantling- take off the protective cover (13) after removing thescrews (27), the grease nipple (42) and its extensionpiece.- pull out the fan (7) using a hub remover or failing thiswith 2 diametrically opposed levers, using the shield (6)for support .- take out the key (21). - unscrew the tie rods (14) and then remove them.- unscrew the fixing screws (40) of the DE bearingretainer (33), and the fixing screws (62) of the NDEbearing retainers (52) and (53), and then remove them.- using a bronze drift, remove the shields (5 and 6) bytapping on the shield bosses, and recover the preloadingwasher (59).- remove the circlips (38) and (60).- remove the rotor (3) from the stator (1) taking care notto touch the winding with the inner bearing retainer.- take out the bearings (30) and (50) using a bearingremover while protecting the end of the shaft extensionwith a washer, and taking care not to knock the runningsurfaces of the shaft.- the bearings are removed either separately or with thebearing retainers; so as not to damage the bearingretainers, heat the outer bearing ring to make it easier todismantle, (the bearing should be discarded).

9.4.2 - Reassembly- see section 6.1 before reassembly.- insert the bearing retainer (33) at the rotor drive endand the bearing retainer (53) at the non drive end.- fill with new grease : the new grease should fill 50% ofthe capacity of the bearing.- remount the new bearings on the shaft, see section 6.3on mounting bearings.- mount the circlips (38) and (60).- insert the rotor (3) into the stator (1) taking everyprecaution not to knock the winding.- screw a rod with the same diameter as the screws (40and 62) into one of the tapped holes of the bearingretainers (33 and 53) to maintain their position and theposition of the grease nipple hole when remounting theshields (5 and 6).- place the preloading washer (59) with a small amountof grease at the back of the bearing cage of the NDEshield (6), then remount the NDE shield (6) bypositioning it on the stator.- mount the seal (54), the outer bearing retainer (52) andthe locking screws (62) of the bearing retainers (52, 53).- mount the shield (5) taking care to allow for the bearingretainer.- put the tie rods in place (14), not forgetting the feet ofthe protective cover (380), tighten the nuts diagonallywithout locking them so that the feet of the protectivecover can be positioned when it is mounted.- mount the drive end seal (39) and its support (386),insert the bearing retainer (32) and the bearing retainerlocking screws (40).- mount the fan (7) using a rod to bed it in position or byheating the hub of the aluminium fan to approximately100°C.

- ensure that the motor turns freely by hand and thatthere is no axial play.- put the protective cover back on (13) and fix it with thescrews (27).- replace the grease nipple (42) and the extension piece.- tighten the rod nuts (14) diagonally up to the torquerecommended in section 6.1.- replace the key (21).

30


��

��

��

��

��

6 40

3952

59 53 33 5 386

54 50 30 38

62 32

NDE DE

��

��

��

��

��

��

3253 33 386 5

3954 60 50 30 38

40

6

52

62

NDE DE

LS 225 MK - LS 250 LS 280 SP/MP

standard bearings

LS 225 MK - LS 250 LS 280 SP/MP


LS 225 MK, LS 250 and LS 280 SP/MPNo. Description No. Description No. Description

1 Wound stator 30 Drive end bearing 54 Non drive end seal

2 Frame 32 Outer drive end cover 59 Preloading (wavy) washer

3 Rotor 33 Drive end bearing retainer 60 NDE bearing circlip

5 Drive end shield 38 Drive end bearing circlip 62 Cover fixing screw

6 Non drive end shield 39 Drive end seal 70 Terminal box

7 Fan 40 Cover fixing screw 74 Terminal box lid

13 Fan cover 42 Grease nipples 380 Protective cover feet

14 Tie rods 50 Non drive end bearing 386 Drive end seal support

21 Key 52 Outer non drive end cover

27 Fan cover screw 53 Inner NDE bearing retainer

31


LS 225 MK, LS 250 and LS 280 SP/MP

5

3

2

506

5462

33

32

3839

386

3021

170

7453 60 59

14

27

52

42

7

40

42

13

386

9.5 - LS 280 SK/MK, LS 315 motors

9.5.1 - Dismantling- take off the protective cover (13) after removing thescrews (27), the grease nipple (42) and its extension.- pull out the fan (7) using a hub remover or failing thiswith 2 diametrically opposed levers, using the shield (6)for support; for an aluminium fan, heat the hub of the fanto approximately 100°C before removing it.- take out the key (21). - unscrew the tie rods (14) and then remove them.- unscrew the fixing screws (40) of the DE bearingretainer (33) and the fixing screws (62) of the NDEbearing retainers (32) and (52), and then remove thebearing retainers.- unscrew the cheese head screws of the mobile valves(35 and 56) then unscrew the valves using a hook key ora conical bronze drift; unscrew the valves by hand andremove them.The valves hold the seals (39 and 54) in place.- remove the fixed valves (34 and 35) from the bearinghousing.- using a bronze drift, remove the shields (5 and 6) bytapping on the shield bosses.- check that the bearing retainer (53) is smaller indiameter than the stator, otherwise remove the bearing(50) as per the following instructions.- remove the rotor (3) from the drive end stator (1) takingcare not to touch the winding with the bearing retainer ifthere is no internal turbine.- take out bearings (30) and (50) using a bearingremover while protecting the end of the shaft extensionwith a washer; take care not to knock the runningsurfaces of the shaft.- the bearings should be removed either separately orwith the bearing retainers (33 and 53); so as not todamage the bearing retainers, heat the outer bearingring with a flame (the bearing should be discarded).- recover the preloading washer or springs (59) from thebearing retainer (53).

9.5.2 - Reassembly- see section 6.1 before reassembly. - insert the rotor drive end retaining plate (33) and theinner non drive end retaining plate (53), not forgetting toplace the preloading springs (59).- fill with new grease : the new grease should fill 50% ofthe capacity of the bearing.- remount the new bearings (30 and 50) on the shaft, seesection 6.3 on mounting bearings.- insert the rotor (3) into the stator (1) taking everyprecaution not to knock the winding.- screw a rod with the same thread diameter as thescrews (40) and (62) into one of the tapped holes of thebearing retainers (33) and (53) to maintain the position ofthe grease nipple hole when remounting the shields (5and 6).- check that the preloading springs are properly installed.- mount the NDE shield (6) by positioning it on the stator,and then mount the fixed valve (55) in the bearinghousing of the shield.- mount the mobile valve (56) by either screwing it or

locking it, having carefully installed the seal (54) on thevalve.- mount the outer bearing retainer (52) with the bearingretainer locking screws (62), making sure that the greasedrain hole is at the bottom.- mount the drive end shield (5), by positioning it on thestator, then mount the fixed valve (34) in the shieldbearing housing.- mount the mobile valve (35) by either screwing it orlocking it having carefully installed the seal (39) on thevalve.- mount the outer bearing retainer (32) with the bearingretainer locking screws (40), making sure that the greasedrain hole is at the bottom.- put the tie rods (14) in place, not forgetting the feet ofthe protective cover (380), tighten the screws diagonallywithout locking them in order to be able to position thefeet of the protective cover when it is mounted.- mount the fan (7) using a rod to bed it in position or byheating the hub of the aluminium fan to approximately100°C.- ensure that the motor turns freely by hand and thatthere is no axial play.- put the protective cover back on (13) and fix it with thescrews (27), replace the grease nipple (42) and itsextension piece.- retighten the rod nuts (14), always diagonally, up to thetorque recommended in section 6.1.- replace the key (21).

32


��

��

��

��

52 32

3956

6 59 53 33 5

54 50 30 34 35

62 40

55

NDE DE

��

��

� ��

3255 6 53 33 5

3954 50 30 35

40

52

62

3456

LS 28O SK/MK - LS 315standard bearings

LS 280 SK/MK - LS 315drive end roller bearings

NDE DE

LS 280 SK/MK and LS 315No. Description No. Description No. Description

1 Wound stator 30 Drive end bearing 53 Inner NDE bearing retainer

2 Frame 32 Outer DE bearing retainer 54 Non drive end seal

3 Rotor 33 Drive end bearing retainer 55 Fixed NDE grease valve

5 Drive end shield 34 Fixed drive end grease valve 56 Mobile NDE grease valve

6 Non drive end shield 35 Mobile drive end grease valve 59 Preloading (wavy) washer or spring

7 Fan 39 Drive end seal 62 Cover fixing screw

13 Fan cover 40 Cover fixing screw 70 Terminal box

14 Tie rods 42 Grease nipples 74 Terminal box lid

21 Key 50 Non drive end bearing 380 Protective cover feet

27 Fan cover screw 52 Outer NDE bearing retainer

33


LS 280 SK/MK and LS 315

5

39

32

35

34

3021

33

3

259

5562

170

7453

42 5452 14 7

1327

42

40

6

38050

56

10 - FLS-FLSC CAGE MOTORS10.1 - FLS-FLSC 80 to 132 motors10.1.1 - Dismantling- take off the protective cover (13) after removing thescrews (27).- pull out the fan (7) using a hub remover or failing thiswith 2 diametrically opposed levers (eg. 2 screwdrivers)using the shield (6) for support .- remove the tie rods (14).- remove the key (21).- using a wooden mallet, hit the shaft near the fan toloosen the DE shield (5).- remove the rotor shaft (3) and the DE shield (5) takingcare not to knock the winding.- remove the shield on the side of the fan (6).- recover the preloading washer (59) and the seal of theNDE shield (54).- remove the circlip (60) from flanged motors usingangled circlip pliers.- separate the DE shield from the rotor shaft.- the shaft can then be seen with its 2 bearings andpossibly the circlip.Use a bearing remover to take out the bearings, takingcare not to knock the running surfaces of the shaft.

10.1.2 - Reassembling motors without circlips- mount the bearings on the rotor shaft.- insert the rotor into the stator taking every precautionnot to knock the winding.- mount the DE shield (5).- mount the NDE shield (6) after placing the preloadingwasher (59) in the bearing housing.- position the tie rods (14) and tighten the nuts diagonallyup to the recommended torque (see section 6.4).- mount the shield seals (39, 54, 308) with grease.- mount the fan (7) using a rod to bed it in position.- ensure that the motor turns freely by hand and thatthere is no radial play.- put the protective cover back on (13) and fix it with thescrews (27).

10.1.3 - Reassembling motors with flange and circlip- mount the DE bearing in the flange (5), using theexternal slip-ring for support.- fit the circlip (60).- mount this assembly on the rotor (3) using the innerbearing slip-ring for support.- mount the NDE bearing on the rotor.- insert the rotor (3) and shield (5) assembly in the stator,taking every precaution not to knock the winding.- mount the NDE shield (6) after placing the preloadingwasher (59) in the bearing housing.- position the tie rods (14) and tighten the nuts diagonallyup to the recommended torque (see section 6.4).- mount the shield seals (39, 54, 308) with grease.- mount the fan (7) using a rod to bed it in position.- ensure that the motor turns freely by hand and thatthere is no axial play.- put the protective cover back on (13) and fix it with thescrews (27).- replace the key (21).

34

FLS-FLSC 3-phase TEFV cageinduction motorscast iron casing

��

��

��

��

��

��

��

56 59 56 59

54 50 5030830 3054 39

60

FLS - FLSC 80 to 132foot mounted

FLS - FLSC 80 to 132flange mounted (or foot/flange)

NDE DE NDE DE

FLS-FLSC 80 to 132No. Description No. Description No. Description

1 Wound stator 21 Shaft extension key 54 Non drive end seal

2 Casing 22 Shaft extension washer 59 Preloading (wavy) washer

3 Rotor 23 Shaft extension screw 60 Circlip

5 Drive end shield 26 Nameplate 71 a FLS terminal box

6 Non drive end shield 27 Fan cover screw 71 b FLSC terminal box

7 Fan 30 Drive end bearing 78 Cable gland

13 Fan cover 39 Drive end seal 84 Terminal block

14 Tie rods 50 Non drive end bearing 308 Labyrinth seal

35


FLS-FLSC 80 to 132

71 b

78

21

3

5

22

5

5

308

23 IM B3

IM B14

IM B5

13

27

14

7

54

684

262

1

60

5950

30

71 a

39

26

78

39

84

10.2 - FLS-FLSC 160 and 180 motors10.2.1 - Dismantling the NDE shield- take off the protective cover (13) after removing thefixing screws (27).- pull out the fan (7).- remove the fixing screws (273) from the NDE shield (6).- using two levers or a flexible hammer, disconnect theNDE shield (6) taking care not to tilt it. Release the shield by sliding it along the shaft. The seal(54) is removed as well and is now useless.- recover the preloading washer (59), which should bereplaced in its seat.

10.2.2 - Dismantling the DE shield- remove the fixing screws (270) from the DE shield.- using an appropriate lifting tool, remove the rotor (3) +DE shield (5) assembly, without knocking the winding.- remove the fixing screws (40) from the inner DE cover(33).- release the key (21).- using two levers or a flexible hammer, lift up the DEshield (5) from the rotor (3) taking care not to tilt it. - remove the shield by sliding it along the shaft. The seal(39) is removed as well and is now useless.

10.2.3 - Changing the bearings- remove the bearings (30) and (50) with an appropriatetool protecting the end of the shaft extension. Take carenot to knock the running surfaces of the shaft.- change the bearings following the instructions given inGeneral Information in section 6 (hot state only).

IMPORTANT : Before starting reassembly, read thesection "BEFORE REASSEMBLY".

10.2.4 - Reassembly- mount the bearings on the rotor shaft (not forgetting theinner DE cover (33)!).- slide the DE shield (5) onto the bearing (30).- replace the fixing screws (40) of the inner cover (33).- insert the rotor + shield assembly into the stator withoutknocking the winding.- place the shields so that the grease nipples areuppermost, not forgetting the preloading washer (59)behind. Slide them into position.- click the shields into place.- ensure that the motor turns freely by hand.

From now on, you are advised to check at eachstage that the rotor turns freely by hand beforegoing on to the next instruction.- replace the fixing screws on the shields (270) and(273). - fit a new seal (54) using a drift.- replace the fan (7).- replace the cover (13) and refit the fixing screws (27).- fit a new seal (39) using a drift.- grease the DE and NDE bearings, turning the shaftby hand.

Quantity of grease for ball bearings : - frame 160 : DE = 40 cm3 / NDE = 20 cm3

- frame 180 : DE = 50 cm3 / NDE = 35 cm3

(except 180 MR NDE = 20 cm3)

36


��

��

��

��

��

��

��

56 59

50 3054 39

33 56 59

50 3054 39

33

��

��

��

��

��

��

��

�

��

��

��

��

56 53

50 39 393054

33 56 53

50 3054

33

56 59

50 3054 39

33 60

38 60

60

38

FLS - FLSC 160 and 180foot mounted (except V6)

standard bearings

FLS - FLSC 160 and 180flange mounted (or foot/flange)

standard bearings

NDE DE NDE DE

FLS - FLSC 160 and 180IM V6 foot mountedstandard bearings

NDE DE

FLS - FLSC 160 and 180foot mounted


FLS - FLSC 160 and 180flange mounted (or foot/flange)


NDE DE NDE DE

FLS-FLSC 160 and 180No. Description No. Description No. Description

1 Wound stator 26 Nameplate 54 Non drive end seal

2 Casing 27 Fan cover screw 59 Non drive end preloading washer

3 Rotor 30 Drive end bearing 64 Non drive end grease nipple

5 Drive end shield 33 Inner drive end cover 70 Stator terminal box

6 Non drive end shield 39 Drive end seal 74 Terminal box lid

7 Fan 40 Cover fixing screw 270 Drive end shield fixing screw

13 Fan cover 42 Drive end grease nipple 271 Drive end shield fixing nut

21 Shaft extension key 50 Non drive end bearing 273 Non drive end shield fixing screw

37


FLS-FLSC 160 and 180

270

59

4230

3321

7074

250

40

27

39

271

270

273

6454

713

5

3

1

26

6

10.3 - FLS-FLSC 200 to 225 MT motors10.3.1 - Dismantling the NDE shield- take off the protective cover (13) after removing thefixing screws (27).- pull out the fan (7).- remove the fixing screws from the inner NDE cover(53).- remove the fixing screws (273) from the NDE shield (6).- using two levers or a flexible hammer, disconnect theNDE shield (6) taking care not to tilt it. Release the shield by sliding it along the shaft. The seal(54) is removed as well and is now useless.- put the dismantled elements to one side and recoverthe preloading washer (59), which should be replaced in itsseat.

10.3.2 - Dismantling the DE shield- dismantle the DE shield without disengaging therotor (3). To do this :- remove the fixing screws (270) from the DE shield (5).- remove the fixing screws (40) from the inner DE cover(33).- release the key (21).- using two levers or a flexible hammer, lift up the DE shield(5) taking care not to tilt it. - remove the shield by sliding it along the shaft. The seal(39) is removed as well and is now useless.

10.3.3 - Changing the bearings- using an appropriate lifting tool, remove the rotorwithout knocking the winding.- remove the bearings (30) and (50) with an appropriatetool protecting the end of the shaft extension. Take carenot to knock the running surfaces of the shaft.- the moving parts of DE (35) and NDE (56) grease valvefollow.- put to one side the elements (55) - (56) for non driveend and (34) - (35) for drive end.- change the bearings following the instructions given inGeneral Information in section 6 (hot state only).


10.3.4 - Reassembly- mount the DE bearing (30) on the rotor shaft (notforgetting the inner DE cover (33)!). Mount the NDEbearing (50) as well, if and only if the internal Ø of thestator allows the inner NDE cover (53) to be fitted.- position the fixed part of the NDE (55) and DE (34)grease valves.- position in hot state the moving part of the NDE (56)and DE (35) grease valves. Make absolutely sure that itis resting on the inner ring of the bearing.- insert the rotor into the stator taking care not to knockthe winding. Position the NDE bearing if this has notalready been done.- place the shields so that the grease nipples are upper-most. Start with the DE shield (5). Fix a pin into one of thetapped holes in the inner cover (33) in such a way as toline up the grease feeder channels. Slide it along untilit clicks into position.

- finish with the NDE shield (6). Fix a pin into one of thetapped holes in the inner cover (33) in such a way as toline up the grease feeder channels.- lift the rotor slightly and click the shields into place onthe casing.

From now on, you are advised to check at eachstage that the rotor turns freely by hand beforegoing on to the next instruction.- replace the fixing screws on the shields (270) and(273).- replace the fixing screws on the inner covers (33) and(53).- fit a new seal (54) using a drift.- replace the fan (7).- fit a new seal (39) using a drift.- replace the cover (13) and refit the fixing screws (27).- grease the DE and NDE bearings, turning the shaft byhand.

Quantity of grease for ball bearings : - DE and NDE = 100 cm3

38


� ��

��

��

��

3935343054 58 50

533536

39343054 58 50

533536

FLS - FLSC 200 to 225 MTstandard bearings

FLS - FLSC 200 to 225 MTdrive end roller bearings

NDE DE NDE DE

FLS-FLSC 200 to 225 MTNo. Description No. Description No. Description

1 Wound stator 33 Inner drive end cover 59 Non drive end preloading washer

2 Casing 34 Fixed part of the DE grease valve 64 Non drive end grease nipple

3 Rotor 35 Moving part of the DE grease valve 70 Stator terminal box

5 Drive end shield 39 Drive end seal 74 Stator terminal box cover

6 Non drive end shield 40 Cover fixing screw 270 Drive end shield fixing screw

7 Fan 42 Drive end grease nipple 271 Drive end shield fixing nut

13 Fan cover 50 Non drive end bearing 273 Non drive end shield fixing screw

21 Shaft extension key 53 Inner non drive end cover 406 DE grease valve cover plate

26 Nameplate 54 Non drive end seal 456 NDE grease valve cover plate

27 Fan cover screw 55 Fixed part of the NDE grease valve

30 Drive end bearing 56 Moving part of the NDE grease valve

39


FLS-FLSC 200 to 225 MT

27

4235

3430

3321

7074

253

5055

5956

64273

547

13

3940

270406

5

406271

270

4566

5

3

26

261

10.4 - FLS-FLSC 225 M to 280 motors10.4.1 - Dismantling the NDE shield- take off the protective cover (13) after removing thefixing screws (27).- if necessary, remove the screw from the shaftextension.- pull out the fan (7).- remove the fixing screws from the inner NDE cover(53).- remove the fixing screws (273) from the NDE shield (6).- if necessary, remove the fan key.- using two levers or a flexible hammer, lift up the NDEshield (6) taking care not to tilt it. Remove the shield by sliding it along the shaft.- put the dismantled elements to one side and recoverthe preloading washer (59), which should be replaced in itsseat.

10.4.2 - Dismantling the DE shield- dismantling the DE shield without disengaging the rotor(3). To do this :- remove the fixing screws (270) from the DE shield (5).- remove the fixing screws (40) from the inner DEcover (33).- release the key (21).- using two levers or a flexible hammer, lift up the DEshield (5) taking care not to tilt it. - Remove the shield by sliding it along the shaft.

10.4.3 - Changing the bearings- using an appropriate lifting tool, remove the rotorwithout knocking the winding.- remove the DE circlip (38).- remove the bearings (30) and (50) with an appropriatetool, protecting the end of the shaft extension. Take carenot to knock the running surfaces of the shaft. - change the bearings following the instructions given inGeneral Information in section 6 (hot state only).


10.4.4 - Reassembly- Mount the DE bearing (30) on the rotor shaft (notforgetting the inner cover (33) and circlip (38)!). Mountthe NDE bearing (50) as well, if and only if the internal Øof the stator allows the inner NDE cover (53) to be fitted.- Insert the rotor into the stator taking care not to knockthe winding. Position the NDE bearing if this has notalready been done.- Fill the decompression grooves (416) located in theshaftway with grease.- place the shields so that the grease nipples areuppermost. Start with the DE shield (5). Fix a pin in one ofthe tapped holes in the inner cover (33) in such a wayas to line up the grease feeder channels.- finish with the NDE shield (6). Fix a pin in one of thetapped holes in the inner cover (53) in such a way as toline up the grease feeder channels.- lift the rotor slightly and click the shields into position.From now on, you are advised to check at eachstage that the rotor turns freely by hand before

going on to the next instruction.- replace the fixing screws on the shields (270) and(273).- replace the inner drive end covers and fixing screws(33) and (53). Replace the AZ sealing washer to ensurea complete seal.- if necessary, replace the fan key.- replace the fan (7).- if necessary, replace the shaft extension screws.- replace the cover (13) and refit the fixing screws (27).- grease the DE and NDE bearings, turning the shaft byhand.

Quantity of grease for ball bearings : - frame 225 - 250 : DE and NDE = 120 cm3

- frame 280 : DE = 170 cm3 / NDE = 120 cm3

40


��

��

��

��

��

�

��

��

��

��

��

��

��

��

��

��

��

��

��

��

�

505333

5 6416

505333

5 6416

FLS - FLSC 225 M to 280standard bearings

NDE DE

FLS - FLSC 225 M to 280drive end roller bearings

NDE DE

FLS-FLSC 225 M to 280No. Description No. Description No. Description

1 Wound stator 26 Nameplate 69 Terminal box base seal

2 Casing 27 Fan cover screw 70 Stator terminal box

3 Rotor 30 Drive end bearing 74 Stator terminal box cover

5 Drive end shield 33 Inner drive end cover 75 Terminal box cover fixing screws

6 Non drive end shield 38 Drive end bearing circlips 77 Terminal box cover seal

7 Fan 40 Cover fixing screw 81 Cable gland baseplate

10 Turbine or fan screw (280 - 4p) 42 Drive end grease nipple 270 Drive end shield fixing screw

11 Brake washer (not shown) (280 - 4p) 50 Non drive end bearing 271 Drive end shield fixing nut

12 Lock washer (280 - 4p) 53 inner non drive end cover 273 Non drive end shield fixing screw

13 Fan cover 59 Non drive end preloading washer 406 DE grease valve cover plate - (plug)

21 Shaft extension key 64 Non drive end grease nipple 456 NDE grease valve cover plate - (plug)

41


FLS-FLSC 225 M to 280

40

54238 30 33 21

3

26

81

74

75

77

70

69

64 27

406

270271

1

2

5350

45659

273

6

712

13

5

10

11

10.5 - FLS-FLSC 315 to 355 LD motorsNote :- there is a stirrer on the drive end of 315 M to 355motors. - types 315 M and L, and all 355 motors have bearingsat the non drive end : the preloading washer (59) istherefore at the drive end.- type 315 S has its bearing at the drive end : the pre-loading washer (59) is therefore at the non drive end.This should be taken into account when dismantling andreassembling the motors.

10.5.1 - Dismantling the NDE shield- remove the grease nipple extension (65).- take off the protective cover (13) after removing thefixing screws (27).- remove the screw and washer from the shaft extension.- pull out the fan (7). - remove the fan key (not shown) and the moving part ofthe grease valve (56).- remove the fixing screws from the inner NDE cover(53).- remove the fixing screws (273) from the NDE shield (6).- using two levers or a flexible hammer, lift up the NDEshield (6). Remove the shield by sliding it along theshaft.- put the dismantled elements to one side and recoverthe preloading washers (59), which should be replaced intheir seat (for 315 S).

10.5.2 - Dismantling the DE shield- dismantle the DE shield without disengaging therotor (3). To do this :- release the key (21)- heat the moving part of the DE valve (35). Unscrew itand remove it.- remove the fixing screws from the inner DE cover (33).- remove the fixing screws (270) from the DE shield.- using two levers or a flexible hammer, lift up the DEshield (5) taking care not to tilt it. - Remove the shield by sliding it along the shaft. - put the dismantled elements to one side and recoverpart (35) which should be replaced in its seat, along withthe preloading washers (59) (for 315 M to 355 LD).

10.5.3 - Changing the bearings- using an appropriate lifting tool, remove the rotorwithout knocking the winding.- remove the bearings (30) and (50) with an appropriatetool, protecting the end of the shaft extension. Take care notto knock the running surfaces of the shaft. - change the bearings following the instructions given inGeneral Information in section 6 (hot state only).


10.5.4 - Reassembly- Mount the DE bearing (30) on the rotor shaft (not for-getting the inner cover (33)!). Mount the NDE bearing(50) and the inner cover (53).- Insert the rotor into the stator taking care not to knockthe winding.- do not forget to reposition the preloading washers (59).

- start with the fixed bearing (see above). Fix a pin intoone of the tapped holes in the inner cover (33) in such away as to line up the grease feeder channels.- finish with the non-fixed bearing. Fix a pin into one ofthe tapped holes in the inner cover in such a way as toline up the grease feeder channels.- lift the rotor slightly and click the shields into position.

From now on, you are advised to check at eachstage that the rotor turns freely by hand beforegoing on to the next instruction.- replace the fixing screws on the shields (270) and (273)- replace the inner cover fixing screws (33) and (53).- refit the moving part of the grease valve (56).- replace the fan (7) fitted with its key.- replace the shaft extension screw and its washer.- refit the fan cover (13).- coat the thread of the moving part of the DE greasevalve (35), with anti-vibration adhesive. Screw it back on.- grease the DE and NDE bearings.

Quantity of grease for ball bearings : - frame 315 S : DE and NDE = 235 cm3 / frame 315 M/L :DE and NDE = 335 cm3 / frame 355 : DE and NDE = 445cm3

Quantity of grease for DE roller bearings :

- frame 315 S : 350 cm3 / frame 315 M/L : 500 cm3 / frame 355 : 665 cm3

42


��

��

��

��

��

��

��

��

��

��

��

��

��

��

59 6 53 33 5

50 3056 35

6 53 33 5 44

50 3056 35

��

� ��

�

6 53 33 5

50 3056 35

FLS - FLSC 315 STstandard bearings

FLS - FLSC 315 M, L355 LA, LB, LC, LDstandard bearings

NDE DE NDE DE

FLS - FLSC 315 to 355 LDdrive end roller bearings

NDE DE

FLS-FLSC 315 to 355 LDNo. Description No. Description No. Description

1 Wound stator 27 Fan cover screw 65 NDE grease nipple extension

2 Casing 30 Drive end bearing 70 Stator terminal box

3 Rotor 33 Inner drive end cover 74 Stator terminal box cover

5 Drive end shield 35 Moving part of the DE grease valve 81 Cable gland baseplate

6 Non drive end shield 40 Cover fixing screw 89 Connection - terminal box

7 Fan 42 Drive end grease nipple 122 Stirrer (only from 315 M to 355 LD)

10 Turbine or fan screw 43 DE grease nipple extension 270 Drive end shield fixing screw

11 Brake washer (not shown) 50 Non drive end bearing 271 Drive end shield fixing nut

12 Lock washer 53 Inner non drive end cover 273 Non drive end shield fixing screw

13 Fan cover 56 Moving part of the NDE grease valve 406 DE grease valve cover plate

21 Shaft extension key 59 Non drive end preloading washer 456 NDE grease valve cover plate

26 Nameplate 64 Non drive end grease nipple

43


FLS-FLSC 315 to 355 LD

727

10

11

6

56

456273

12

13

59

7074

89

5350

64

181

2

3

5

4230

435

27035

40

271

21

406

33

65

270

122

26

10.6 - FLS-FLSC 355 LK to 450 motors10.6.1 - Dismantling the NDE shield - remove the grease nipple extension (65).- take off the protective cover (13) after removing thefixing screws (27). There is a thread into which a liftingring may be screwed to make it easier to remove thecover.- remove the fan fixing screw and washer (10 -12) andthe brake washer (11).- pull out the fan (7).- remove the fan key (not shown) and the moving part ofthe grease valve (56).- remove the fixing screws from the inner NDE cover(53).- remove the fixing screws from the NDE shield (273). - using two levers, lift up the NDE shield (6). Screw in alifting ring in place of one of the cover fixing screws. Turnthe shield so that the ring is uppermost. Remove theshield with a lifting block, sliding it along the shaft.

10.6.2 - Dismantling the DE shield- dismantle the DE shield without disengaging therotor (3). To do this :- release the key (21).- heat the moving part of the DE valve (35). Unscrew itand remove it.- remove the fixing screws from the inner DE cover (33).- remove the fixing screws (270) from the DE shield.- using two levers or a flexible hammer, lift up the DEshield (5) taking care not to tilt it. - Remove the shield by sliding it along the shaft. - put the dismantled elements to one side and recoverthe moving part of the DE grease valve (35), whichshould be replaced in its seat.

10.6.3 - Changing the bearings- the bearings can be changed without removing therotor.- push back the inner covers (53) and (33) to make iteasier for a tool to be inserted to extract the bearings.Pull out the bearings.


10.6.4 - Reassembly- mount the DE bearing (30) and NDE bearing (50) onthe rotor shaft.- do not forget to replace the preloading washers (59) intheir seat.- start with the NDE bearing (6). Fix a pin into one of thetapped holes in the inner cover (53) in such a way as toline up the grease feeder channels.- finish with the DE shield (5). Fix a pin into one of thetapped holes in the inner cover (33) in such a way as toline up the grease feeder channels.- place the shield on the bearing. Turn it so that thegrease nipple is uppermost.- slide it until it clicks into position.- lift the rotor slightly and click the shields in place on thecasing.

- replace the fixing screws on the shields.- replace the cover fixing screws.- refit the moving part of the grease valve.- replace the fan (7) fitted with its key.- replace the shaft extension screw and its washers (10)(11) (12).- refit the cover.- replace the DE grease nipple extension (65).- coat the thread of the moving part of the DE greasevalve (35), with anti-vibration adhesive. Screw it back on.- grease the DE and NDE bearings.

Quantity of grease for ball bearings : - frame 355 LK - 400 L : DE and NDE = 575 cm3 / frame 400LK - 450 : DE and NDE = 855 cm3

Quantity of grease for DE roller bearings :

- frame 355 LK - 400 L : 860 cm3 / frame 400LK - 450 : 1280 cm3

Note : Removing the rotor if necessary- Place a sling at each end of the rotor. Lift it with a blockuntil it is no longer resting in the stator. Move it as far asyou can towards the rear. Put the rotor down again andreposition the slings in order to repeat the operation asoften as required.- when you can no longer attach the front sling (rotor toofar into the stator), just keep the rear sling.- lift slightly, place a hollow bar on the shaft and use it asa lever to compensate for the weight of the rotor.- remove the rotor.

44


��

��

��

��

��

��6 53 33 5 44

50 3056 35 ��

��

��

��

��

6 53 33 5

50 3056 35

FLS - FLSC 355 LK and 450standard bearings

FLS - FLSC 355 LK and 450drive end roller bearings

NDE DE NDE DE

FLS-FLSC 355 LK to 450No. Description No. Description No. Description

1 Wound stator 27 Fan cover screw 65 NDE grease nipple extension

2 Casing 30 Drive end bearing 70 Stator terminal box

3 Rotor 33 Inner drive end cover 74 Stator terminal box cover

5 Drive end shield 35 Moving part of the DE grease valve 81 Cable gland baseplate

6 Non drive end shield 40 Cover fixing screw 89 Connection - terminal box

7 Fan 42 Drive end grease nipple 121 Stirrer

10 Turbine or fan screw 43 DE grease nipple extension 230 Auxiliary terminal box (from 355 LK to 450)

11 Brake washer (not shown) 44 DE preloading (wavy) washer 270 Drive end shield fixing screw

12 Lock washer 50 Non drive end bearing 271 Drive end shield fixing nut

13 Fan cover 53 Inner non drive end cover 273 Non drive end shield fixing screw

21 Shaft extension key 56 Moving part of the NDE grease valve 406 DE grease valve cover plate

26 Nameplate 64 Non drive end grease nipple 456 NDE grease valve cover plate

45


FLS-FLSC 355 LK to 450

4244

3033

7074

89230

12153

5065

646

567

2713

435

27035

40406

10

270

181

2456

27312

11

21

5

3

271

26

11 - FLSB-FLSLB SLIP-RING MOTORS11.1 - FLSB-FLSLB 160 motors11.1.1 - Dismantling the NDE shield- take off the protective cover (13).- pull out the fan (7).- remove the fixing screws from the inner NDE cover.- remove the inspection door. - disconnect the wires on the brush holders (151).- remove the fixing screws from the NDE shield (136).- using two levers or a flexible hammer, lift up the NDEshield (136) taking care not to tilt it.Remove the shield by sliding it along the NDE bearing(50).

11.1.2 - Dismantling the DE shield- extract the key (21) from the shaft.- remove the inner DE cover screws.- remove the fixing screws from the DE shield (5).- using two levers or a flexible hammer, lift up the DEshield (5) taking care not to tilt it. Remove the shield bysliding it along the DE bearing (30).

11.1.3 - Changing the bearings- using an appropriate lifting tool, remove the rotorwithout knocking the winding.- remove the DE (30) and NDE (50) bearings with anappropriate tool, protecting the end of the shaftextension. Take care not to knock the running surfacesof the shaft.- change the bearings following the instructions given inGeneral Information in section 6 (hot state only).

11.1.4 - Checking the set of slip-rings and brushes- normal maintenance (see section 3.3).- check the state of the slip-rings (patina - colour -scratches - micropitting). The slip-rings can be rectified ifnecessary. Leave 5/10 minimum depth of spiral for dustremoval.

11.1.5 - Reassembly- mount the DE bearing (30) on the rotor shaft (notforgetting the inner cover). Mount the NDE bearing (50)and its inner cover.- insert the rotor into the stator, taking care not to knockthe winding.- place the shields so that the grease nipples areuppermost.- start with the NDE shield (50). Fix a pin into one of thetapped holes in the inner cover in such a way as to lineup the grease feeder channels- slide it along until it clicks into position.- finish with the DE shield (30). Fix a pin into one of thetapped holes in the inner cover in such a way as to lineup the grease feeder channels- slide it along until it clicks into position.- lift the rotor slightly and click the shields in place on thecasing.

From now on, you are advised to check at eachstage that the rotor turns freely by hand beforegoing on to the next instruction.- replace the fixing screws on the shields (notnumbered).- reconnect the wires to the brush-holders and replacethe inspection door.- replace the fan (7).- replace the cover (13) and refit the fixing screws.- grease the DE and NDE bearings, turning the shaft byhand (40 cm3 minimum per bearing).

46

FLSB-FLSLB 3-phase TEFV slip-ringinduction motorscast iron casing

47


FLSB-FLSLB 160

FLSB- FLSLB160No. Description No. Description No. Description

1 Wound stator 21 Shaft extension key 69 Stator terminal box seal

3 Wound rotor 30 Drive end bearing 77 Stator terminal box cover seal

5 Drive end shield 42 Drive end grease nipple 136 Slip-ring housing

7 Fan 50 Non drive end bearing 146 Commutator

13 Fan cover 59 Preloading (wavy) washer 151 Brush-holder rod

14 Tie rod 64 Non drive end grease nipple

11.2 - FLSB-FLSLB 180 and 200 motors11.2.1 - Dismantling the NDE shield- take off the protective cover (13).- remove the pin (not numbered) and then the fan.- pull out the fan (7).- remove the fixing screws from the inner NDE cover(53).- remove the inspection door (140). - disconnect the wires on the brush holders (149).- remove the fixing screws from the NDE shield (136).- using two levers or a flexible hammer, lift up the NDEshield (136) taking care not to tilt it.Remove the shield by sliding it along the NDE bearing(50).

11.2.2 - Dismantling the DE shield- extract the key (21) from the shaft.- remove the labyrinth seal (47). This part cannot beremoved intact. Replace it with a new part.- remove the fixing screws of the inner DE cover.- remove the fixing screws from the DE shield (5).- using two levers or a flexible hammer, lift up the DEshield (5) taking care not to tilt it. Remove the shield bysliding it along the DE bearing (30).

11.2.3 - Changing the bearings- using an appropriate lifting tool, remove the rotorwithout knocking the winding.- remove the DE (30) and NDE (50) bearings with anappropriate tool, protecting the end of the shaftextension. Take care not to knock the running surfacesof the shaft.- change the bearings following the instructions given inGeneral Information in section 6 (hot state only).

11.2.4 - Checking the set of slip-rings and brushes- normal maintenance (see section 3.3).- check the state of the slip-rings (patina - colour -scratches - micropitting). The slip-rings can be rectified ifnecessary. Leave 5/10 minimum depth of spiral for dustremoval.- check the state of the brushes. The minimumacceptable height is 20 to 25 mm.

11.2.5 - Reassembly- mount the DE bearing (30) on the rotor shaft (notforgetting the inner cover). Mount the NDE bearing (50)and its inner cover (53).- insert the rotor into the stator, taking care not to knockthe winding.- place the shields so that the grease nipples areuppermost.- start with the NDE shield (50). Fix a pin into one of thetapped holes in the inner cover (53) in such a way as toline up the grease feeder channels- slide it along until it clicks into position.- finish with the DE shield (30). Fix a pin into one of thetapped holes in the inner cover in such a way as to lineup the grease feeder channels- lift the rotor slightly and click the shields in place on thecasing.

From now on, you are advised to check at eachstage that the rotor turns freely by hand beforegoing on to the next instruction.- replace the fixing screws on the shields (notnumbered).- reconnect the wires to the brush-holders and replacethe inspection door.- replace the fan (7) with its rotating retaining pin.- replace the cover (13) and refit the fixing screws.- grease the DE and NDE bearings, turning the shaft byhand (50 cm3 minimum per bearing).

48


49


FLSB-FLSLB 180 and 200

FLSB-FLSLB 180 and 200No. Description No. Description No. Description

1 Wound stator 47 Drive end shield labyrinth seal 98 Stator connector bars

2 Casing 50 Non drive end bearing 122 Air circulator

3 Wound rotor 53 Inner non drive end cover 136 Slip-ring housing

5 Drive end shield 64 Non drive end grease nipple 140 Inspection door

7 Fan 69 Stator terminal box seal 146 Commutator

13 Fan cover 70 Stator terminal box 149 Brush-holder

21 Shaft extension key 74 Stator terminal box cover 150 Brush

30 Drive end bearing 75 Stator terminal box screw 151 Brush-holder rod

34 Fixed part of the drive end grease valve 77 Stator terminal box cover seal

42 Drive end grease nipple 84 Terminal block

11.3 - FLSB-FLSLB 225 and 250 motors11.3.1 - Dismantling the NDE shield- take off the protective cover (13).- remove the shaft extension screw (not numbered) andthen the fan.- pull out the fan (7).- remove the fixing screws from the inner NDE cover (53).- remove the inspection door (140). - remove the fixing nut from the brush-holder rod (149).- using two levers or a flexible hammer, lift up the NDEshield (136) taking care not to tilt it.Remove the shield by sliding it along the NDE bearing(50).

11.3.2 - Dismantling the DE shield- extract the key (21) from the shaft.- remove the labyrinth seal (47b).- remove the inner DE cover screws (33).- remove the fixing screws from the DE shield (5).- using two levers or a flexible hammer, lift up the DEshield (5) taking care not to tilt it. Remove the shield bysliding it along the DE bearing (30).

11.3.3 - Changing the bearings- using an appropriate lifting tool, remove the rotorwithout knocking the winding.- remove the DE grease valve (34).- remove the DE (30) and NDE (50) bearings with anappropriate tool, protecting the end of the shaftextension. Take care not to knock the running surfacesof the shaft.- change the bearings following the instructions given inGeneral Information in section 6 (hot state only).


11.3.5 - Reassembly- mount the DE bearing (30) on the rotor shaft (notforgetting the inner cover (33)!). Mount the NDE bearing(50) and its inner cover (53).- insert the rotor into the stator, taking care not to knockthe winding.- place the shields so that the grease nipples are upper-most.- start with the DE shield (30). Fix a pin into one of thetapped holes in the inner cover (33) in such a way as toline up the grease feeder channels- slide it along until it clicks into position.- finish with the NDE shield (50). Fix a pin into one of thetapped holes in the inner cover (53) in such a way as toline up the grease feeder channels- slide it along until it clicks into position.- lift the rotor slightly and click the shields in place on thecasing.

From now on, you are advised to check at eachstage that the rotor turns freely by hand beforegoing on to the next instruction.- replace the shield fixing screws.- replace the brush-holder rod fixing nut and theinspection door.- replace the fan (7).- replace the cover (13) and refit the fixing screws.- grease the DE and NDE bearings, turning the shaft byhandMinimum amount : - frame 225 : DE = 120 cm3 / NDE = 65 cm3

- frame 250 : 65 cm3 per bearing

50


51


FLSB-FLSLB 225 and 250

FLSB-FLSLB 225 and 250No. Description No. Description No. Description

1 Wound stator 37 Drive end spacer ring 75 Stator terminal box screw

2 Casing 42 Drive end grease nipple 77 Stator terminal box cover seal

3 Wound rotor 47b Labyrinth seal/stop ring (225 to 250 only) 84 Terminal block

5 Drive end shield 50 Non drive end bearing 98 Stator connector bars

7 Fan 53 Inner non drive end cover 122 Air circulator

13 Fan cover 61 Non drive end spacer ring 136 Slip-ring housing

21 Shaft extension key 64 Non drive end grease nipple 140 Inspection door

30 Drive end bearing 69 Stator terminal box seal 146 Commutator

33 Inner drive end cover 70 Stator terminal box 149 Brush-holder

34 Fixed part of drive end grease valve 74 Stator terminal box cover 150 Brush

11.4 - FLSB-FLSLB 280 to 355 motors11.4.1 - Dismantling the NDE shield- take off the protective cover (13).- unscrew the SKF nut (9).- pull out the fan (7).- remove the fixing screws from both the outer and innerNDE covers (52) and (53).- take out the outer cover (52).- remove the inspection door (140). - disconnect the wires from the brush-holders (149).- remove the fixing screws from the NDE shield (136).- using two levers or a flexible hammer, lift up the NDEshield (136) taking care not to tilt it.Remove the shield by sliding it along the NDE bearing(50).

11.4.2 - Dismantling the DE shield- extract the key (21) from the shaft.- remove the 2 fixing screws from the DE labyrinth seal(47).- remove the labyrinth seal (47).- remove the screws from the outer and inner DE covers(32) and (33).- take out the outer cover (32).- remove the fixing screws from the DE shield (5).- using two levers or a flexible hammer, lift up the DEshield (5) taking care not to tilt it. Remove the shield bysliding it along the DE bearing (30).

11.4.3 - Changing the bearings- using an appropriate lifting tool, remove the rotorwithout knocking the winding.- remove the SKF nut from the DE bearing (30).- remove the DE (30) and NDE (50) bearings with anappropriate tool, protecting the end of the shaftextension. Take care not to knock the running surfacesof the shaft.- change the bearings following the instructions given inGeneral Information in section 6 (hot state only).


11.4.5 - Reassembly- mount the DE bearing (30) on the rotor shaft (notforgetting the inner cover (33)!). Mount the NDE bearing(50) and the inner cover (53).- insert the rotor into the stator, taking care not to knockthe winding.- place the shields so that the grease nipples areuppermost.- start with the DE shield (30). Fix a pin into one of thetapped holes in the inner cover (33) in such a way as toline up the grease feeder channels.

- slide it along until it clicks into position.- finish with the NDE shield (50). Fix a pin into one of thetapped holes in the inner cover (53) in such a way as toline up the grease feeder channels.- slide it along until it clicks into position.- lift the rotor slightly and click the shields in place on thecasing.

From now on, you are advised to check at eachstage that the rotor turns freely by hand beforegoing on to the next instruction.- replace the shield fixing screws.- replace the outer cover (32) of the DE shield (30).- replace the labyrinth seal (47).- reconnect the wires to the brush-holders and replacethe inspection doors.- replace the outer cover (52) of the NDE shield (50)along with its SKF nut (9).- replace the fan (7).- replace the cover (13) and refit the fixing screws.- grease the DE and NDE bearings, turning the shaft byhand.Minimum amount : - frame 280 = 125 cm3 per bearing - frame 315 : DE = 300 cm3 / NDE = 150 cm3 - frame 355 = 430 cm3 per bearing

52


53


FLSB-FLSLB 280 to 355

FLSB-FLSLB 280 to 355No. Description No. Description No. Description

1 Wound stator 50 Non drive end bearing 136 Slip-ring housing

2 Casing 52 Outer non drive end cover 140 Inspection door

3 Wound rotor 53 Inner non drive end cover 146 Commutator

5 Drive end shield 56 Moving part of non drive end grease valve 149 Brush-holder

7 Fan 61 Non drive end spacer ring 151 Brush-holder rod

9 Brake nut 64 Non drive end grease nipple 160 Rotor terminal box

13 Fan cover 69 Stator terminal box seal 163 Rotor terminal box cover

21 Shaft extension key 70 Stator terminal box 164 Rotor terminal box screw

25 Lifting device 74 Stator terminal box cover 166 Rotor terminal box cover seal

30 Drive end bearing 75 Stator terminal box screw 166b Rotor terminal box seal

32 Outer drive end cover 77 Stator terminal box cover seal 173 Rotor terminal box baseplate

33 Inner drive end cover 84 Terminal block 406 Drive end grease valve cover plate

35 Moving part of drive end grease valve 98 Stator connector bars 456 Non drive end grease valve cover plate

42 Drive end grease nipple 110 Grille

47 Drive end shield labyrinth seal 122 Air circulator

Notes

LEROY-SOMER 16015 ANGOULÊME CEDEX - FRANCE

RCS ANGOULÊME N° B 671 820 223S.A. au capital de 62 779 000 €

www.leroy-somer.com

3770a Mot Tri En

Documents

phase tefv

ring induction

ring induction

forced ventilation

coupling sleeve

rotor locking

mains power

thermal protection