Installation, Operation and Maintenance Instructions · nent magnet elements. In the 30A, 40A, 45A, 50A, and 55A the air gap is directly accessible from the outside of the unit as

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Installation, Operationand MaintenanceInstructions

ERIEZ MAGNETICS HEADQUARTERS: 2200 ASBURY ROAD, P.O. BOX 10608, ERIE, PA 16514–0608 U.S.A.WORLD AUTHORITY IN ADVANCED TECHNOLOGY FOR MAGNETIC, VIBRATORY and METAL DETECTION APPLICATIONS

®

VM-3050K

VIBRATORYFEEDERMODELS - 10A,20A, 30A, 40A,45A, 50A & 55A

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IntroductionThis manual details the proper steps for installing,operating and maintaining the Eriez Vibratory Feeder.

Careful attention to these requirements will assure themost efficient and dependable performance of thisequipment.

If there are any questions or comments about themanual, please call Eriez Magnetics at 814/835-6000for Vibratory Feeder assistance.

© 2004 ERIEZ MAGNETICS ALL RIGHTS RESERVED

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Table of ContentsERIEZ VIBRATORY FEEDER - MODELS 10A, 20A, 30A,

40A, 45A, 50A AND 55A

INSTALLATION ..................................................................................................... 4

Mounting ......................................................................................................... 4

Electrical Connections ..................................................................................... 4

OPERATION ......................................................................................................... 5

Adjustment (Tuning) ........................................................................................ 5

How To Measure Displacement....................................................................... 5

Adjusting Guide ............................................................................................... 5

Adjustment for Non-standard Trays ................................................................ 6

Adjusting or Tuning for Various Densities of Material ...................................... 6

REPAIRS............................................................................................................... 7

Coil Replacement ............................................................................................ 7

Tray Installation ............................................................................................... 8

Spring Replacement ........................................................................................ 9

The Hi-Vi Magnetic Circuit ............................................................................. 10

TROUBLESHOOTING ........................................................................................ 11

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InstallationMOUNTINGThis Hi-Vi model should be mounted on a flat sur-face in one of the following ways:

POSITIONED AND FASTENEDFastened to desired surface with bolts of propersize through the base grommets (see Figure 1).Use flat washers under the bolt heads. Do notfasten the bolts too tightly or the vibration isolat-ing effect of the grommets will be lost.

ELECTRICAL CONNECTIONS1. Check the supply voltage and frequency and

make certain that they are the same as thoseshown on the nameplate of the Feeder andControl (see Figure 3).

OUTPUT LINECOVER

FIGURE 3

2. Connect the black and the white wires in theFeeder power cord to the terminals in the con-trol box marked “Output”.

3. Connect the green wire (ground) to the lugprovided in the box.

4. Connect the power line to the terminals in thecontrol box marked “Line”.

5. Connect the lug in the control box to a good earthground (a cold water line is excellent). If a well-grounded metallic conduit system is used, thelatter connection may be dispensed with.

6. On multiple drive feeders (two or more drives onone tray) all drives should be wired electrically inphase and in parallel. The black wires from eachpower cord should be connected together andthe white wires connected together. The blackwires should be connected to the line side of theinput voltage and the white wires should be con-nected to the neutral side.

NOTE: The Eriez Vibratory Feeder cannot be oper-ated from a DC source.

YOU ARE NOW READY TO START YOUR VIBRA-TORY FEEDER.

FIGURE 1

NOT POSITIONED OR FASTENEDSimply place on a flat surface in the desired posi-tion. If unit has tendency to ‘’walk’’ during opera-tion provisions must be taken to secure unit to avoiddamage and maintain safety.

FIGURE 2

POSITIONED BUT NOT FASTENEDFixed headless stud pins of proper size and spac-ing (see Figure 2). Set the base (with base grom-mets in place) over the pins.

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OperationIn NORMAL OPERATION at full voltage the total dis-placement measured at the back of the tiebar (or theback of the tray if a displacement sticker is used) is.030" (.25 mm) for 10A; .045" (11.1 mm) for 20Athrough 55A. In general these displacements shouldnot be exceeded by more than .005" (.1 mm).

CAUTION: NEVER OPERATE THE UNIT IN ASTRIKING CONDITION

HOW TO MEASURE DISPLACEMENTWith unit operating observe where the fine graylines on the displacement sticker meet (see Fig-ure 6). This point will be higher or lower as thedisplacement changes. Opposite the point wherethey meet, read amount of displacement. If a ruleis used, the displacement can readily be measuredas a “blurred bar” at the back of the tiebar.

FIGURE 4

FIGURE 5

ADJUSTING GUIDEThe following general rules should be borne in mindwhen making adjustments.

1. To increase the tray displacement, decreasethe stiffness of the spring system.

2. To decrease the tray displacement, increasethe stiffness of the spring system.

The above rules apply where the unit is operat-ing on the normal side of the tuning curve. If in-creasing or decreasing the spring stiffness hasan opposite effect, it means that the mass of thetray and/or load has been great enough to throwthe operating point to the reverse side of thecurve, which is undesirable. In this event, the stiff-ness should be increased (or the tray-load mass

To start the Vibratory Feeder after all connectionshave been made, turn the switch on the control tothe “ON” position and adjust the feed rate by rotat-ing the control knob. Normally no warm-up periodis required. Do not operate the unit with any asso-ciated equipment touching any part of the unit.

No routine maintenance or lubrication is required,except that any accumulation of foreign mattershould be periodically removed from between thetray and the body to prevent restriction of move-ment of the vibratory elements.

IMPORTANT NOTE:SPECIAL TRAYS AND ATTACHMENTSEriez engineering service should always be con-sulted before undertaking the design or construc-tion of special trays. Neither standard or specialtrays as furnished by Eriez Magnetics should bemodified or attachments made without first consult-ing us. To do so will void the warranty. (See Stan-dard Tray Specifications.)

ADJUSTMENT (TUNING)The adjusting means is solely for producing opti-mum performance of the unit where a specific ma-terial of low (under 40 Ibs/cu ft [.6 gm/cm3]) or high(over 150 Ibs/cu ft [2.4 gm/cm3]) density is to behandled continuously…also where off-standardsizes and shapes of trays are required.

This unit is tuned by changing the stiffness of thetuning spring (see Figure 4) or springs. This adjust-ment consists of varying the number of springs, orthe number of fiberglass plies in individual springs.

TUNINGSPRINGS

TIEBAR

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Operation (cont.)reduced) until the behavior is in accordance withrules (1) and (2) above. The unit can then be prop-erly tuned.

To serve as a guide to the stiffness of the tuningsprings, each spring is marked with a code num-ber. Example: 13–125. The first digit indicates thenumber of plies in the spring. The following num-bers indicate the relative spring stiffness. The higherthis number, the stiffer the spring.

The total stiffness of the spring system is the sumof the relative stiffness numbers. By combinationsof standard stiffness springs, virtually any desiredstiffness can be obtained.

ADJUSTMENT FOR NON-STANDARD TRAYSIn the adjustment of the unit, the following stepsshould be followed:

1. Attach the tray (see Tray Installation Proce-dure). Be sure that all bolts are tight.

2. Energize the unit at the nameplate voltage andfrequency.

3. a) If a control box is used, turn the controlslowly toward the full “ON” position and ob-serve the unit in operation. If a control box isnot used, turn the unit on and off quickly andnote its performance during the “ON” period.

b) If a hammering noise is in evidence, thetray displacement is excessive. To producenormal quiet operation at full voltage, in-crease the stiffness of the tuning spring stackby substituting a leaf or leaves of greater plyfor one or more of the tuning spring leaves,or by adding additional leaf or leaves, untilapproximately normal total displacement isobtained. Under normal operating conditions,the unit may be turned on or off without anymomentary or prolonged striking noise.

c) If the displacement at full voltage is consid-erably less than normal, decrease the tuningspring stiffness by substituting leaves of fewerplies. When installing tuning springs, be surethat all spring clamping bolts are torqued totheir proper value. Additional springs may bepurchased from Eriez Magnetics.

ADJUSTING OR TUNING FORVARIOUS DENSITIES OF MATERIALSThe unit may be adjusted to provide optimum per-formance for a specific density of material in thesame manner as described for non-standard trays.When a unit is adjusted, with the tray empty, to thenormal total displacement for that unit (given above),it is set for optimum performance on a material hav-ing a density of 100 Ibs/cu ft (1.6 g/cm3). All stan-dard units are so adjusted at the factory. For verylight materials, optimum performance occurs withdisplacements above the normal value, but not toexceed .005" (.1 mm) above the normal value. Fordenser materials, optimum performance occurs withdisplacements below the normal value.

The basic characteristic of these units is such thatthe volume output is virtually constant for materialsfrom 40 Ibs/cu ft to 150 Ibs/cu ft (.6 gm/cm3 to2.4 gm/cm3) when units are equipped with standardtrays. When nonstandard trays are used (particu-larly large trays), a tuning change is often neces-sary to provide optimum performance for a specificmaterial; also, since the actual “dead” weight ofmaterial on the tray may be appreciable.

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RepairsCOIL REPLACEMENTThe coil in a vibratory Feeder may require replace-ment due to operation at over-voltage, or normalaging of the unit. Re-assembly after a coil changewill require checking and possible re-centering ofthe air gap between the E-Frame and the perma-nent magnet elements. In the 30A, 40A, 45A, 50A,and 55A the air gap is directly accessible from theoutside of the unit as described below. In the 10Aand 20A, the air gap is not directly accessible fromthe outside, so that a somewhat different adjust-ment procedure is required.

Powercord orientation, left side versus right sidevaries for feeder model; 20A and 30A powercordsexit on left side. All other units referred to in thismanual can exit either side of unit.

The following procedure should be followed in re-moving and replacing the electrical assembly (seeFigures 6 & 7).

1. Remove the bolts securing the lower end ofthe tuning spring and those securing the traychannel to the front section of the tiebar. Re-move the tray, the rear section of the tiebarand the tuning springs in one piece.

2. Remove the bolts securing the electrical assem-bly plate to the body casting and lift the entireelectrical assembly out of the body cavity.

3. Remove defective coil or E-Frame assemblyand install new coil or E-Frame assembly(Order from Eriez parts list).

FIGURE 6

ELECTRICALASSEMBLYPLATE

REMOVETHESEBOLTS

FIGURE 7

4. In replacing the electrical assembly, insert itinto original position in the body casting. DONOT FORCE THE ASSEMBLY INTO PLACE.When properly aligned, the assembly will goin readily although there will be a distinct“pull” exerted by the permanent magnet inthe armature. To overcome this pull, it maybe necessary to guide the plate with a screw-driver, meanwhile applying pressure to thetop of the plate.

5. Start the electrical assembly plate bolts intothe casting, but do not tighten completely.

6. 20A, 30A, 40A, 45A, 50A, and 55A only (seeFigure 8).

a) Remove the cover nameplate from one sideof the body casting. With a screwdriver, re-move the cork from the gap access port.

FIGURE 8

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Repairs (cont.)b) Working through the gap access port in theside of the body casting, and using a non-mag-netic feeler gauge (furnished with each unit)approximately .080" (2 mm) thick (Model 30A)or .063" (1.6 mm) thick (Models 20A, 40A, 45A,50A and 55A), check the air gaps between theE-Frame legs and the armature pole pieces(see Figure 9). These gaps should be uniformin width and parallel and as nearly alike as pos-sible. If they are not, they should be adjustedby shifting the electrical assembly plate. Inchecking and adjusting the gaps, it may befound convenient, and the internal parts willbe easier to see, if both cover nameplates andboth corks are removed.

7. 10A only.

a) After installing the electrical assembly andinserting the bolts somewhat loosely, approxi-mately center the assembly with respect tothe armature This can be done by noting thefront and rear points at which the E-Framecontacts the armature. Tighten the electricalassembly bolts.

b) Reinstall the tray-tiebar-tuning spring as-sembly (see instructions below).

c) With the unit operating at normal displace-ment, check the centering of the electrical as-sembly with respect to the armature by exert-ing equal hand pressure alternately forwardand backward on the tray. If such equal handpressure causes armature striking in one

FIGURE 9

direction but not in the other, the electrical as-sembly should be loosened slightly and shiftedin the same direction until striking ceases tooccur. Retighten the bolts.

TRAY INSTALLATION PROCEDUREUse of the Alignment PlateThe alignment plate furnished should be used toinsure proper alignment of the tray, tiebar and tun-ing springs whenever a new tray is installed, or anold one reinstalled after repair work. The followinginstructions should be followed:

1. Attach the rear section of the tiebar to the bodycasting, using the alignment plate in place ofthe tuning springs. This puts the two sectionsof the tiebar into proper dimensional relation-ship (see Figure 10).

FIGURE 10

ALIGNMENTPLATE

2. Attach the tray and fasten the bolts securely(see Figure 11).

FIGURE 11

TRAYATTACHED

ALIGNMENTPLATE

AIR GAP

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Repairs (cont.)3. Remove the alignment plate and install tuning

springs in the proper number and ply to givethe desired displacement (see Figure 12). Seetuning instructions.

TUNINGSPRINGS

FIGURE 12

SPRING REPLACEMENTAlthough the non-metallic springs used in the V3BSeries Feeders have outstanding life characteris-tics, failure may eventually occur, especially if thedisplacement is greater than normal. The symptomsof such failure are:

1. Erratic behavior of the unit.

2. Greatly reduced displacement.

3. Greatly increased and perhaps uncontrollabledisplacement.

4. Strike sound with tray empty at 100% voltage.

5. Higher amperage reading than that on the nameplate with the tray empty at 100% voltage.

If spring failure is suspected, the base should beremoved (see Figure 13) and the front disc springcarefully examined for signs of delamination or break-age, especially at the center of the spring. A failedspring can be recognized by the appearance ofthe surface adjacent to the steel hub of the spring.If this surface has a discolored or whitish appear-ance in this area, perhaps accompanied by a bulg-ing or irregular appearance, the spring is defec-tive and should be replaced. If found defective,the front spring should be removed and replacedbefore disturbing the rear spring (see Figure 14).

Remove the tray, the front section of the tiebar andthe front clamp ring, replace the spring, and re-place the clamp ring and the tiebar section in or-der. Make sure that the arrow stamped on thespring points up, and that the tiebar section isstraight and lined up with the rear section.

After the front spring has been checked and, iffound defective, replaced, the rear spring shouldbe checked, in much the same fashion without dis-turbing the front spring (see Figure 15).Remove the rear clamp ring, examine the spring,replace if necessary (making sure that the arrowstamped on the spring points up and that theholes line up with the tapped holes in the bodycasting after the center bolt is tightened), and re-install the rear clamp ring. The other parts canthen be reassembled, following the tray installa-tion procedure described, and the unit tuned tothe correct displacement.

FRONTDISCSPRING

EXAMINE HEREFOR DEFECT

FIGURE 13

FRONTDISCSPRING

FRONTTIEBAR

FIGURE 14

FRONT CLAMP RING

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WHEN TIGHTENING THE DISC SPRING CENTERCLAMP BOLTS, THE FOLLOWING BOLTTORQUE VALUES SHOULD BE ADHERED TO:

10A–25 lbs/ft (18 Nm) 45A–100 lbs/ft (74 Nm)

20A–40 lbs/ft (29 Nm) 50A–275 lbs/ft (200 Nm)

30A–65 lbs/ft (48 Nm) 55A–275 lbs/ft 200 Nm

40A–100 lbs/ft (74 Nm)

These values apply to unlubricated bolts with a hard-ened flat washer (not lock washer) under the head.

THE HI-VI MAGNETIC DRIVE CIRCUITOld-style electromagnetic vibratory equipment hasan inefficient attract-release type operation, wherea mass mounted on springs is attracted by a DCelectromagnet and returned to its original positionsolely by the springs. The Eriez Hi-Vi method in-corporates a lifetime permanent magnet and is op-erated directly from an alternating current line. Norectifier is required.

In the Hi-Vi method, the spring-mounted mass isalternately both attracted and repelled by an ACelectromagnet assisted by the springs.

The pole pieces of the permanent magnet areintermeshed in the air gaps of the electromagnet.The polarity of the electromagnet alternates at theline frequency. The polarity of the electromagnet isshown as it would exist on one side of the sine wave.

Note that both poles of the permanent magnet arebeing attracted toward the unlike electromagnetpoles. They are also being repelled in the samedirection by the like electromagnet poles. This re-sults in four forces accumulating to drive the arma-ture in the same direction. It also results in closingthe magnetic circuit through the electromagnet pro-viding a magnetizing effect on the permanent mag-net on each side of the sine wave. The de-magne-tizing force is very minor, for the magnet poles andthe magnetic lines of flux would much rather be at-tracted than repelled. This always places the per-manent magnet in a net magnetizing circuit regard-less of where the AC current is on the sine wave.

As the polarity of the electromagnet changes, all ofthe forces are reversed and the permanent magnetarmature is driven in the opposite direction.

CAUTION: Operation from portable enginedriven power plants.Varying and unstable line frequency has a diverseeffect on vibratory feeders because they are tunedmechanical devices, designed around either 50 or60 cycle operating frequency. Shifts in the operat-ing point due to changes in frequency (greater than61 Hz or less than 59 Hz) cause higher than nor-mal spring stress, striking and high line currentswhich can cause drive and tray failure. When op-erating from portable engine-driven power plants,be certain that the engine is up to speed and allother loads are started and at running speed be-fore starting the electromagnet feeder.

The feeder should always be stopped first whenthe engine-driven power plant is shut down.

FIGURE 16

Repairs (cont.)

N S N NS

ACPOWERSUPPLY

POTENTIOMETER

ELECTRO-MAGNET

ARMATURE CONNECTED TO SPRINGS AND MOVING MASS

PERMANENTMAGNET

FIGURE 15

REARCLAMPRING

EXAMINEHERE(REAR DISCSPRING)

CENTER BOLT

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1. MisapplicationFeeder too small. Product difficult or impos-sible to handle. Impossible temperatures oratmospheres. Impossible dimensional require-ments. Feeding requirements too precise orexcessive. Consult Engineering.

2. Tampering or Changing of Base or TrayExtensions, covers, weights, screens or othermodifications or attachments that may haveaffected performance. Disassembly or othermodifications without either carefully follow-ing printed instructions or consulting EriezManufacturing Company. Restore to origi-nal configuration.

3. Loose Spring Clamp or Tray Mounting BoltsTighten all bolts except center bolt of eachdisc spring.

4. Coil FailureReplace coil or coil and E-Frame assembly.Order from Eriez parts lists. Follow mainte-nance instructions carefully.

5. Control FailureCheck for burned out powerstat or rheostat,defective capacitor, defective switch, loosewiring, defective transformer (if used). Ordernew parts from Eriez. Possibility special con-trol needed. Consult Engineering.

6. Incorrect voltageCheck nameplate specifications and line volt-age. Correct line voltage if necessary.

Reduced or Low 1 2 3 5 6 7 8 9 10 11 13 14 16 19Output

Noisy but Output 2 3 8 9 10 11 12 13 14 19Okay

Noisy Certain 9 11 13 14 19Periods Only

Completely 2 4 5 7 8 11 13 15 16Inoperative

Operating But 2 3 5 6 7 8 9 10 11 12 13 14 16 17 18 19Reduced Output

Output Okay 2 3 7 8 9 10 11 12 13 14 19Too Much Noise

Gradual 3 5 7 9 10 11 13 18 19Fading

Excessive 18Tray Wear

Turbulent 2 3 10 11 14 17 19Flow

Inconsistent 2 3 5 6 7 9 10 11 12 13 14 16 17 19Output

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NATURE OFPROBLEM

TABLE 1. SERVICE CHART

Troubleshooting

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Troubleshooting (cont.)7. Spring Failure

See maintenance instructions. Disassemblefor examination. If a disc spring has failed, itwill show either as complete breaking away ofthe center steel hub or delamination adjacentto this hub. A white area of irregular shapearound the hub indicates delamination. Tun-ing spring failure will also show up as whiteareas. Order new parts from factory and re-place per instructions.

8. Foreign MaterialExamine and remove foreign material.

9. Incorrect TuningSee maintenance instructions. To increasedisplacement and output, use fewer or lesserply tuning springs. To decrease displacementand eliminate striking, use more or greaterply tuning springs. (Note: Opposite on HSFeeder only.)

10. Broken Weld on TrayCheck and correct.

11. Incorrect Factory AdjustmentSee maintenance instructions (gap adjustments).

12. Sympathetic Vibration in Other EquipmentCheck and correct.

13. Contact with Other EquipmentCheck and correct.

14. Line Voltage VariationCheck and install voltage regulator if necessary.

15. Blown Fuse or Circuit BreakerCheck for short circuits and correct.

16. Other Electrical ConnectionsCheck all connections and correct.

17. Shockmount DeteriorationCheck and correct.

18. Corrosive or Abrasive MaterialMay require special tray–Consult Eriez Manu-facturing Company.

19. Product VariationIf product density, moisture content or othercharacteristics vary, customer should take owncorrective measures.

Eriez and Eriez Magnetics are registered trademarks of Eriez Manufacturing Co., Erie, PA

World Authority in Advanced Technology for Magnetic, Vibratory and Metal Detection ApplicationsHEADQUARTERS: 2200 ASBURY ROAD, P.O. BOX 10608, ERIE, PA 16514-0608 U.S.A.

Telephone 814/835-6000 • 800/345-4946 • Fax 814/838-4960 • International Fax 814/833-3348

Web Site: http://www.eriez.com e-mail: [email protected]

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604-1.5M-SG-SEN ERIEZ MANUFACTURING CO. PRINTED IN USA

®

© 2004 ERIEZ MAGNETICS ALL RIGHTS RESERVED