07 AC 85-225 - REV 01-2001

SERVICE MANUAL

ACM 85AC 125AC 175AC 225

R 134 A / R 404 A VERSIONS

Electronic cuberswith storage

MS 1000.08 REV. 03/98

Table of contents pageSpecifications ACM 85Specifications AC 125Specifications AC 175Specifications AC 225

GENERAL INFORMATION AND INSTALLATION

IntroductionUnpacking and InspectionLocation and levellingElectrical connectionsWater supply and drain connectionsFinal check listInstallation practice

OPERATING INSTRUCTIONS

Start upOperational checks

OPERATING PRINCIPLES (How it works)

Freezing cycleHarvest cycleControl sequenceComponent description

ADJUSTMENT, REMOVAL AND REPLACEMENT PROCEDURES

Adjustment of the cube sizeReplacement of evaporator temperature sensorReplacement of condenser temperature sensorReplacement of ambient temperature sensorReplacement of ice level light controlReplacement of P.C. BoardReplacement of the water pump (ACM 85)Replacement of the water pump (AC 125 & AC 175 )Replacement of the water pump (AC 225)Replacement of water inlet solenoid valveReplacement of hot gas valve coilReplacement of water drain solenoid valveReplacement of fan motorReplacement of plastic curtain (ACM 85 & AC 125-175)Replacement of spray platform and chute (ACM 85 & AC 125-175)Replacement of spray bar (AC 225)Replacement of drierReplacement of hot gas valve bodyReplacement of evaporator platenReplacement of air cooled condenserReplacement of water cooled condenserReplacement of water regulating valve (water cooled models)Replacement of compressorWiring diagram (ACM 85)Wiring diagram (AC 125-175 & AC 225)Service diagnosis

MAINTENANCE AND CLEANING INSTRUCTIONS

GeneralIcemakerCleaning instructions of water system

Page 01

TABLEOF CONTENTS

12468

10101011111112

1314

18212223

2728282828282829292929292930303030303031313132333435

383839

SPECIFICATIONS

ELECTRONIC CUBER MODEL ACM 85

Important operating requirements:

MIN MAXAir temperature 10°C (50°F) 40°C (100°¯F)Water temperature 5°C (40°F) 40°C (100°F)Water pressure 1 bar (14 psi) 5 bar (70 psi)Electr. voltagevariations fromvoltage ratingspecified onnameplate -10% +10%

ice making capacity

NOTE. With the unit in “built-in” conditions, the ice production is gradually reduced in respect to thelevels shown in the graf, up to a maximum of 10% at room temperatures higher than 32°C.The daily ice-making capacity is directly related to the condenser air inlet temperature, watertemperature and age of the machine.To keep your SCOTSMAN CUBER at peak performance levels, periodic maintenance checksmust be carried out as indicated on page 38 of this manual.

Page 02

40

38

36

34

32

30

28

26

K g .

32 °C

AIR COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

°C

10

21

32

38

40

38

36

34

32

30

28

26

K g .

°C

WATER COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

°C

10

21

32

38

27 21 15 10 32 27 21 15 10

Basic electr. Amps. Start Amps Watts No of Wires Amp. Fuse

Page 03

SPECIFICATIONS (CONT'D)

Electr. power cons.Kwh per 24 Hrs

230/50/1 3.2 17 500 10 3 x 1 m/m 102

Cubes per harvest: 24 medium* At 15°C (60°F) water temperature

ACM 85 - CUBER MACHINE SPECIFICATION

Model Cond. Finish Comp. HPIce bin cap. Water requirem

Kgs. LTx24 HR

ACM 85 AS Air S/Steel 140*3/8 14

ACM 85 WS Water S/Steel 380*

FRONT VIEW

HEIGHT (without legs) 790 mm.HEIGHT (with legs) 930 mm.WIDTH 457 mm.DEPTH 523 mm.WEIGHT 44 Kgs.

SPECIFICATIONS

ELECTRONIC CUBER MODEL AC 125



ice making capacity

NOTE. With the unit in “built-in” conditions, the ice production is gradually reduced in respect to thelevels shown in the graf, up to a maximum of 10% at room temperatures higher than 32°C.The daily ice-making capacity is directly related to the condenser air inlet temperature, watertemperature and age of the machine.To keep your SCOTSMAN CUBER at peak performance levels, periodic maintenance checksmust be carried out as indicated on page 38 of this manual.Production charts shown indicate the production of ACM models; ice production of ACL andACS models is 10% lower.

Page 04

75

70

65

60

55

50

45

K g .

32 °C27 21 15 10

AIR COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

°C

10

21

32

38

75

70

65

60

55

50

45

K g .

°C

WATER COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

°C

32

38

10 21

32 27 21 15 10


Page 05



230/50/1 3.8 20 670 13 3 x 1 m/m 10

Cubes per harvest: 36 large / 48 medium / 84 small* At 15°C (60°F) water temperature

Ice bin cap. Water requiremKgs. LTx24 HR

AC 125 AS Air S/Steel 160*1/2 28

AC 125 WS Water S/Steel 680*

AC 125 - CUBER MACHINE SPECIFICATIONS

Model Cond. Finish Comp. HP

FRONT VIEW


2

SPECIFICATIONS




ice making capacity


Page 06

87,5K g .

32 10 °C

AIR COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

°C

10

21

32

38

WATER COOLED MODELS

10

21

27 21 15

85

82,5

80

77,5

75

72,5

70

67,5

65

62,5

60

57,5

87,5

K g .

32 10 °C

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

°C

10

2110

21

32

38

27 21 15

85

82,5

80

77,5

75

72,5

70

67,5

65

90

92,5

95




230/50/1 5.3 29 850 18 3 x 1 m/m 16

Cubes per harvest: 36 large / 48 medium* At 15°C (60°F) water temperature

Ice bin cap. Water requiremKgs. LTx24 HR

AC 175 AS Air S/Steel 0160*3/4 28



Model Cond. Finish Comp. HP

FRONT VIEW


Page 07

2

SPECIFICATIONS




ice making capacity


Page 08

150

145

140

135

130

125

120

115

110

105

100

95

90

85

K g .

32 °C

AIR COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

°C

1021

32

38

WATER COOLED MODELS

27 21 15 10

160

155

150

145

140

135

130

125

120

115

110

105

100

95

K g .

32 °C

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

°C

102132

38

27 21 15 10


Page 09



230/50/1 5.3 29 1100 22 3 x 1.5 m/m 16

Cubes per harvest: 72 large / 102 medium / 198 small.* At 15°C (60°F) water temperature

2

FRONT VIEW



Model Cond. Finish Comp. HPIce bin cap. Water requirem

Kgs. LTx24 HR

AC 225 AS Air S/Steel 0250*1 70


A. INTRODUCTION

This manual provides the specifications and thestep-by-step procedures for the installation, start-up and operation, maintenance and cleaning forthe SCOTSMAN ACM 85, AC 125, AC 175 andAC 225 icemakers.The Electronic Cubers are quality designed,engineered and manufactured.Their ice making systems are thoroughly testedproviding the utmost in flexibility to fit the needsof a particular user.

NOTE. To retain the safety and performancebuilt into this icemaker, it is important thatinstallation and maintenance be conductedin the manner outlined in this manual.

B. UNPACKING AND INSPECTION

1. Call your authorized SCOTSMAN Distributoror Dealer for proper installation.

2. Visually inspect the exterior of the packingand skid. Any severe damage noted should bereported to the delivering carrier and a concealeddamage claim form filled in subjet to inspection ofthe contents with the carrier’s representativepresent.

3. a) Cut and remove the plastic strip securingthe carton box to the skid.

b) Remove the packing nails securing thecarton box to the skid.

c) Cut open the top of the carton and removethe polystyre protection sheet.

d) Pull out the polystyre post from the cornersand then remove the carton.

4. Remove the front and (if any) the rearpanels of the unit and inspect for any concealeddamage. Notify carrier of your claim for theconcealed damage as steted in step 2 above.

5. Remove all internal support packing andmasking tape. (Leg package is located in thestorage bin compartment).

6. Check that refrigerant lines do not rubagainst or tuch other lines or surfaces, and thatthe fan blade moves freely.

7. Check that the compressor fits snugly ontoall its mounting pads.

8. Use clean damp cloth to wipe the surfacesinside the storage bin and the outside of thecabinet.

GENERAL INFORMATION AND INSTALLATION

Page 010

9. See data plate on the rear side of the unitand check that local main voltage correspondswith the voltage specified on it.

CAUTION. Incorrect voltage supplied tothe icemaker will void your partsreplacement program.

10. Remove the manufacturer’s registrationcard from the inside of the User Manual and fill-in all parts including: Model and Serial Numbertaken from the data plate.Forward the completed self-addressedregistration card to the SCOTSMAN EuropeFrimont factory.

11. If necessary fit the four legs into their seatson the machine base and adjust them to thedesired level.

C. LOCATION AND LEVELING

WARNING. This Ice Cuber is designed forindoor installation only. Extended periodsof operation at temperature exceedingthe following limitations will constitutemisuse under the terms of the SCOTSMANManufacturer’s Limited Warranty resultingin LOSS or warranty coverage.

1. Position the unit in the selected permanentlocation.Criteria for selection of location include:

a) Minimum room temperature 10°C (50°F)and maximum room temperature 40°C (100°F).

b) Water inlet temperatures: minimum 5°C(40°F) and maximum 40°C (100°F).

c) Well ventilated location for air cooledmodels. Clean the air cooled condenser atfrequent intervals.

d) Service access: adequate space must beleft for all service connections through the rear ofthe ice maker. A minimum clearance of 15 cm(6") must be left at the sides of the unit for routingcooling air drawn into and exhausted out of thecompartment to maintain proper condensingoperation of air cooled models.

2. Level the unit in both the left to right andfront to rear directions.

D. ELECTRICAL CONNECTIONS

See data plate for current requirements todetermine wire size to be used for electricalconnections. All SCOTSMAN icemakers requirea solid earth wire.All SCOTSMAN ice machines are supplied fromthe factory completely pre-wired and require onlyelectrical power connections to wire cord providedat the rear of the unit.Make sure that the ice machine is connected toits own circuit and individually fused (see dataplate for fuse size).The maximum allowable voltage variation shouldnot exceed -10% and + 10% of the data platerating. Low voltage can cause faulty functioningand may be responsible for serious damage tothe overload switch and motor windings.

NOTE. All external wiring should conform tonational, state and local standards andregulations.

Check voltage on the line and the ice maker’sdata plate before connecting the unit.

E. WATER SUPPLY AND DRAINCONNECTIONS

GENERAL

When choosing the water supply for the ice cuberconsideration should be given to:

a) Length of run

b) Water clarity and purity

c) Adequate water supply pressure

Since water is the most important single ingredientin producting ice you cannot emphasize toomuch the three items listed above.Low water pressure, below 1 bar may causemalfunction of the ice maker unit.Water containing excessive minerals will tend toproduce cloudy coloured ice cubes, plus scalebuild-up on parts of the water system.

WATER SUPPLY

Connect the 3/4" male fitting of the solenoidwater inlet valve, using the flexible tube suppliedto the cold water supply line with regular plumbingfitting and a shut-off valve installed in anaccessible position between the water supplyline and the unit.If water contains a high level of impurities, it isadvisable to consider the installation of anappropriate water filter or conditioner.

Page 11

WATER SUPPLY - WATER COOLED MODELS

The water cooled versions of SCOTSMAN IceMakers require two separate inlet water supplies,one for water sprayed for making the ice cubesand the other for the water cooled condenser.Connect the 3/4" male fitting of the water inlet,using the flexible tube supplied to the cold watersupply line with regular plumbing fitting and ashut-off valve installed in an accessible positionbetween the water supply line and the unit.

WATER DRAIN

The recommended drain tube is a plastic orflexible tube with 18 mm (3/4") I.D. which runs toan open trapped and vented drain. When thedrain is a long run, allow 3 cm pitch per meter(1/4" pitch per foot)A vent at the unit drain connection is also requiredfor proper sump drainage.

WATER DRAIN - WATER COOLED MODELS

Connect the 3/4" male fitting of the condenserwater drain, utilizing a second flexible tubing tothe open trapped and vented drain.

NOTE. The water supply and the water drainmust be installed to conform with the localcode. In some case a licensed plumber and/or a plumbing permit is required.

F. FINAL CHECK LIST

1. Is the unit level? (IMPORTANT)

2. Have all the electrical and plumbingconnections been made, and is the water supplyshut-off valve open?

3. Has the voltage been tested and checkedagainst the data plate rating?

4. Have the bin liner and cabinet been wipedclean?

5. Have the bolts holding the compressor downbeen checked to ensure that the compressor issnugly fitted onto the mounting pads?

6. Has the owner/user been given the UserManual and been instructed on the importance ofperiodic maintenance checks?

7. Has the Manufacturer’s registration cardbeen filled in properly? Check for correct modeland serial number against the serial plate andmail the registration card to the factory.

8. Check all refrigerant lines and conduitlines to guard against vibrations and possiblefailure.

9. Is the unit in a room where ambienttemperatures are within a minimum of 10°C(50¯F) even in winter months?

10. Is there at least a 15 cm (6") clearance

Page 12

around the unit for proper air circulation?

11. Has the water supply pressure beenchecked to ensure a water pressure of at least 1bar (14 psi).

12. Has the owner been given the name and thephone number of the authorized SCOTSMANService Agency serving him?

WARNING. This icemaker is not designed for outdoor installation and will not functionin ambient temperatures below 10 °C (50°F) or above 40 °C (100°F).This icemaker will malfunction with water temperatures below 5 °C (40°F) or above40°C (100°F).

1. Hand shut-off valve2. Water filter3. Water supply line (flexible hose)4. 3/4" male fitting5. Vented drain6. Open trapped vented drain7. Drain fitting8. Main switch9. Power line

G. INSTALLATION PRACTICE

START UP

After having correctly installed the ice maker andcompleted the plumbing and electricalconnections, perform the following “Start-up”procedure.

A. Give power to the unit to start it up byswitching “ON” the power line main disconnectswitch.

NOTE. Every time the unit returns underpower, after having been switched off, thewater inlet valve, the hot gas valve and thewater drain valve get energized for a periodof 5 minutes, thus to admit new water to themachine sump reservoir to fill it up and,eventually, to wash-off any dirt that can havedeposited in it during the unit off period(Fig.1).

B. During the water filling operation, check tosee that the incoming water dribbles, through theevaporator platen dribbler holes, down into the

OPERATING INSTRUCTIONS

Page 13

sump reservoir to fill it up and also that theincoming surplus of water flows out through theoverflow pipe into the drain line.

During the water filling phase the componentsenergized are:

THE WATER INLET SOLENOID VALVETHE HOT GAS SOLENOID VALVETHE WATER DRAIN SOLENOID VALVE

NOTE. If in the 5 minutes lenght of the waterfilling phase the machine sump reservoirdoes not get filled with water up to the rim ofthe overflow pipe, it is advisable to check:

1.The water pressure of the water supply linethat must be at least 1 bar (14 psig) Minimum(Max 5 bar-70 psig).

2.The filtering device installed in the waterline that may reduce the water pressurebelow the Minimum value of 1 bar (14 psig).

3. Any clogging situation in the water circuitlike the inlet water strainer and/or the flowcontrol.

16

15

14

13

2

1

7

8

9

10

3

4

5

6

11

12

Rx Tx

WATER IN VALVE

HOT GAS VALVE

CONTACTOR COIL

FAN MOTOR

WATER PUMP

- EVAPORATOR

- AMBIENT

- CONDENSER

TEM

PERA

TURE

SEN

SORS

BIN

COM

PRES

SOR TRANSF.

DATA

PROC

ESSO

R

ELECTR.TIMER

DIPSWITCH

ELECTRONIC CARD

L

N

RELAYS

RELAY

TRIAC

WATER DRAIN VALVE

FIG. 1

C. At completion of the water filling phase(5 minutes) the unit passes automatically into thefreezing cycle with the start up of:

COMPRESSOR

WATER PUMP

FAN MOTOR (in air cooled version) controlledby the condensing temperature sensor locatedwithin the condenser fins (Fig.2).

OPERATIONAL CHECKS

D. Install, if required, the refrigerant servicegauges on both the high side and low sideScraeder valves to check the compressor headand suction pressures.

NOTE. On air cooled models, the condensertemperature sensor, which is located withinthe condenser fins, keep the head(condensing) pressure between 8.5 and 9.5bar (110÷130 psig) on models ACM 85,AC 125 and AC 175 and between 15 and 17bar on model AC 225.

Page 14

In case of condenser clogging such to preventthe proper flow of the cooling air or, in casethe fan motor is out of operation or shortageof water in the water cooled condenser, thecondenser temperature rises and when itreaches 70°C (160°F) - for air cooled version- or 62°C (145°F) - for water cooled version -the condenser temperature sensor shuts-offthe ice maker with the consequent light-up ofthe RED WARNING LIGHT (Fig.3).

After having diagnosed the reason of the riseof temperature and removed its cause, it isnecessary to turn the head of the selector -always using an appropriate scewdriver - firston the RE-SET position then return it onprevious OPERATION position or unplug(wait few seconds) and plug in again the unit,thus to put the machine in condition to initiatea new freezing cycle.

The machine restarts with the usual 5 minuteswater filling phase in order to provide enoughwater into the sump tank.

16

15

14

13

2

1

7

8

9

10

3

4

5

6

11

12

Rx Tx

WATER IN VALVE

HOT GAS VALVE

CONTACTOR COIL

FAN MOTOR

WATER PUMP

- EVAPORATOR

- AMBIENT

- CONDENSER

TEM

PERA

TURE

SEN

SORS

BIN

COM

PRES

SOR TRANSF.

DATA

PROC

ESSO

R

ELECTR.TIMER

DIPSWITCH

ELECTRONIC CARD

L

N

RELAYS

RELAY

TRIAC

WATER DRAIN VALVE

FIG. 2

Page 15

E. Check to see through the ice dischargeopening that the spray system is correctlyseated and that the water jets uniformelyreach the interior of the inverted mold cups;

also make sure that the plastic curtain(ACM 85 & AC 125-175) is hanging freelyand there is not excessive water spillingthrough it.

16

15

14

13

2

1

7

8

9

10

3

4

5

6

11

12

Rx Tx

WATER IN VALVE

HOT GAS VALVE

CONTACTOR COIL

FAN MOTOR

WATER PUMP

- EVAPORATOR

- AMBIENT

- CONDENSER

TEM

PERA

TURE

SEN

SORS

BIN

COM

PRES

SOR TRANSF.

DATA

PROC

ESSO

R

ELECTR.TIMER

DIPSWITCH

ELECTRONIC CARD

L

N

RELAYS

RELAY

TRIAC

WATER DRAIN VALVE

16

15

14

13

2

1

7

8

9

10

3

4

5

6

11

12

Rx Tx

WATER IN VALVE

HOT GAS VALVE

CONTACTOR COIL

FAN MOTOR

WATER PUMP

- EVAPORATOR

- AMBIENT

- CONDENSER

TEM

PERA

TURE

SEN

SORS

BIN

COM

PRES

SOR TRANSF.

DATA

PROC

ESSO

R

ELECTR.TIMER

DIPSWITCH

ELECTRONIC CARD

L

N

RELAYS

RELAY

TRIAC

WATER DRAIN VALVE

FIG. 3

FIG. 4

F. The ice making process takes place thereby,with the water sprayed into the molds that getsgradually refrigerated by the heat exchange withthe refrigerant flowing into the evaporatorserpentine. During the freezing process, whenthe evaporator temperature falls below anestablished value, the evaporator temperaturesensor supplies a low voltage power signal to theelectronic control device (P.C.BOARD) in orderto activate an electronic timer. This one takesover the control of the freezing cycle up to thecomplete formation of the ice cubes (Fig.4).

NOTE. The lenght of the entire freezing cycleis governed by the evaporator temperaturesensor which has its probe placed in contactwith the evaporator serpentine (Nonadjustable) in combination with the electronictimer (Adjustable) incorporated in theP.C.BOARD. The timer adjustment is factoryset in consideration of the ice maker type,cooling version and ice cube size (Small,Medium, Large). It is possible, however, tomodify the timed lenght of the freezing cycle,by changing the DIP SWITCH keys setting.In Table B of PRINCIPLE OF OPERATIONare shown the various time extensions of thefreezing cycle second phase, in relation withthe different DIP SWITCH keys setting.

G. After about 17÷20 minutes from the begin-ning of the freezing cycle, in an hypotheticambient temperature of 21°C, the defrost cycletakes place with the hot gas, the water inletand the water drain valves simoultaneouslyactivated (Fig. 5).

The electrical components in operation on modelsare:COMPRESSORWATER INLET VALVEHOT GAS VALVEWATER DRAIN VALVEand theWATER PUMPon the first 15 seconds on model ACM 85 &AC 125-175 and on the first 30 seconds onmodel AC 225.

NOTE. The lenght of the defrost cycle isdeterminated by the DIP SWITCH keyssetting in conjunction with the ambient tem-perature sensor located just in front of thecondenser. The lenght of defrost cycle canbe adjusted by changing the combinationsetting of keys 5, 6 and 7 of DIP SWITCH asillustrated on Table C of PRINCIPLE OFOPERATION.As shown, per each individual keyscombination, it is possible to have a differentlenght of the defrost cycle in relation to thedifferent ambient temperature situations;shorter when the ambient temperature ishigh and longer in colder ambients to partiallycompensate the lenght of the freezing cycle,which is longer in high ambient temperaturesand shorter in low ones.

Page 16

16

15

14

13

2

1

7

8

9

10

3

4

5

6

11

12

Rx Tx

WATER IN VALVE

HOT GAS VALVE

CONTACTOR COIL

FAN MOTOR

WATER PUMP

- EVAPORATOR

- AMBIENT

- CONDENSER

TEM

PERA

TURE

SEN

SORS

BIN

COM

PRES

SOR TRANSF.

DATA

PROC

ESSO

R

ELECTR.TIMER

DIPSWITCH

ELECTRONIC CARD

L

N

RELAYS

RELAY

TRIAC

WATER DRAIN VALVE

FIG. 5

beam; the RED LIGHT, located in the front of theP.C.BOARD, will glow immediately.After approximately 6 seconds the ice makerresume its operation with the immediate glowingof the FOURTH YELLOW LIGHT indicating UNITIN OPERATION and the extinguishing of the“BIN FULL” YELLOW LIGHT.

NOTE. The ICE LEVEL CONTROL(INFRARED SYSTEM) is independent of thetemperature however, the reliability of itsdetection can be affected by external lightradiations or by any sort of dirt and scalesediment which may deposit directly on thelight source and on the receiver.To preventany possible ice maker malfunction, due tonegative affection of the light detector, it isadvisable to locate the unit where it is notreached by any direct light beam or lightradiation, also it is recommended to keep thebin door constantly closed and to follow theinstructions for the periodical cleaning of thelight sensor elements as detailed in theMAINTENANCE AND CLEANINGPROCEDURES.

K. Remove, if fitted, the refrigerant servicegauges and re-fit the unit service panelspreviously removed.

L. Instruct the owner/user on the generaloperation of the ice machine and about thecleaning and care it requires.

Page 17

H. Check, during the defrost cycle, that theincoming water flows correctly into the sumpreservoir in order to refill it and that the surplusoverflows through the overflow drain tube.

I. Check the texture of ice cubes just released.They have to be in the right shape with a smalldepression of about 5-6 mm in their crown.If not, wait for the completion of the second cyclebefore performing any adjustment.If required, the lenght of the timed freezing cyclecan be modified by changing the DIP SWITCHkeys setting as illustrated in OPERATINGPRINCIPLE.If the ice cubes are shallow and cloudy, it ispossible that the ice maker runs short of waterduring the freezing cycle second phase or, thequality of the supplied water requires the use ofan appropriate water filter or conditioner.

J. To be sure of the correct operation of icelevel control device, place one hand between itssensing “eyes” to interrupt the light beam.The RED LIGHT located in the front of theP.C.BOARD goes immediately OFF, and after60 seconds, the unit stops with the simultaneousglowing of the 2nd YELLOW LIGHT to monitorthe BIN FULL situation (Fig.6).

Take the hand out from the ice level controlsensors to allow the resumption of the light

16

15

14

13

2

1

7

8

9

10

3

4

5

6

11

12

Rx Tx

WATER IN VALVE

HOT GAS VALVE

CONTACTOR COIL

FAN MOTOR

WATER PUMP

- EVAPORATOR

- AMBIENT

- CONDENSER

TEM

PERA

TURE

SEN

SORS

BIN

COM

PRES

SOR TRANSF.

DATA

PROC

ESSO

R

ELECTR.TIMER

DIPSWITCH

ELECTRONIC CARD

L

N

RELAYS

RELAY

TRIAC

WATER DRAIN VALVE

FIG. 6

The timer, which is built-in the P.C. BOARD,takes over from the evaporator temperaturesensor, the control of the freezing cycle up to itscompletion.

NOTE. The change of the electric potential ofthe evaporator sensor with the consequentactivation of the timer (Time mode) is signalledby the glowing-up of the RED LED located inthe front of the P.C. BOARD.

ATTENTION. In case, after 15 minutesfrom the beginning of the freezing cycle,the temperature of the evaporator sensorprobe is higher then 0 ° C (32°F) (shortageof refrigerant, inoperative hot gas valve,etc.) the P.C. BOARD switch OFFimmediately the unit with thesimultaneous blinking of the WARNINGRED LED.

The length of this second portion of the freezingcycle is pre-fixed and related to the setting of thefirst four DIP SWITCH keys.The DIP SWITCH keys setting is made inconsideration of the type of condenser used.In Table B are indicated the various lengths ofthe second portion of freezing cycle (Time mode)in relation to the different combinations of the DIPSWITCH KEYS.In Table A herebelow are illustrated the DIPSWITCH keys combinations for the three differentmodels and versions as they are set in thefactory.

The electrical components in operation duringthe freezing cycle are:

COMPRESSORFAN MOTOR (in air cooled version)WATER PUMPCONTACTOR COILand during the second phase of freezing cycle(Time mode) they are joined by theELECTRONIC TIMER

PRINCIPLE OF OPERATIONHow it works

In the SCOTSMAN cube ice makers the waterused to make the ice is kept constantly incirculation by an electric water pump which primesit to the spray system nozzles from where it isdiverted into the inverted mold cups of theevaporator. A small quantity of the sprayed waterfreezes into ice; the rest of it cascades by gravityinto the sump assembly below for recirculation.

FREEZING CYCLE

The hot gas refrigerant discharged out from thecompressor reaches the condenser where, beingcooled down, condenses into liquid. Flowing intothe liquid line it passes through the drier filter,then it goes all the way through the capillary tubewhere, due to the heat exchanging action, itlooses some of its heat content so that its pressureand temperature are lowered as well.Next the refrigerant enters into the evaporatorserpentine (which has a larger I.D. then thecapillary) and starts to boil off; this reaction isemphasized by the heat transferred by thesprayed water.The refrigerant then increases in volume andchanges entirely into vapor.The vapor refrigerant then passes through thesuction accumulator (used to prevent that anysmall amount of liquid refrigerant may reach thecompressor) and through the suction line. In boththe accumulator and the suction line it exchangesheat with the refrigerant flowing into the capillarytube (warmer), before to be sucked in thecompressor and to be recirculated as hotcompressed refrigerant gas.The freezing cycle is controlled by the evaporatortemperature sensor (which has its probe in contactwith the evaporator serpentine) that determinesthe length of its first portion of the cycle.When the temperature of the evaporatorserpentine drops to a pre-set value, the evaporatorsensor probe changes its electrical resistanceallowing a low voltage current (15 volts) to flow tothe P.C. BOARD which in turn activates anelectronic timer.

TAB. A

DIP SWITCH 1 2 3 4

ACM 85 A

ACM 85 W

ACM 125 A

ACM 125 W

ACM 175 A & W

ACS 225 A & W

ACM 225 A & W

ACL 225 A & W

5 6 7 8 9 10FREEZING CYCLE DEFROST CYCLE DIAGN. W.PUMP KWD

DIP SWITCH FACTORY SETTING COMBINATIONS PER MODEL AND VERSION

ON

ON

ON

OFF

OFF

OFF

ON

OFF

ON

ON

ON

ON

OFF

OFF

ON

OFF

OFF

OFF

OFF

OFF

OFF

ON

OFF

OFF

ON

ON

ON

ON

ON

ON

ON

ON

ON

OFF

ON

OFF

ON

OFF

OFF

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

ON

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

ON

ON

ON

ON

ON

ON

ON

ON

OFF

OFF

OFF

OFF

OFF

ON

ON

ON

Page 18

Page 19

FIG. A

FIG. C

FIG. B

FIG. C FIG. D

FIG. A

FIG. A FIG. E

FIG. C

FIG. F

FIG. G FIG. H

Page 20

The refrigerant head pressure, in the course ofthe freezing cycle, ranges between 8.5 and 9.5bars (110÷130 psig) on models ACM 85, AC 125and AC 175 and between 15 and 17 bar(210 ÷ 240 psig)on model AC 225 being controlledby the temperature sensor probe located withinthe condenser fins (air cooled version) or, on thecondenser tube coil (water cooled version).On the air cooled version, the condenser tempe-rature sensor, when senses a rising of thecondenser temperature beyond the pre-fixedlimit, changes its electrical resistance andtransmits a low voltage power flow to the MicroProcessor of P.C. BOARD which in turn energizes,through a TRIAC, the FAN MOTOR.When the opposite situation occures, i.e. thecondenser temperature gets below the pre-fixedlimit, the temperature sensor changes again itselectrical resistance reducing therefore the currentflow to the P.C. BOARD to cause the fan motortemporary cut-off.

NOTE. In case the condenser temperatureprobe senses that the condenser temperatu-re has rised to 70°C (160°F) - on air cooledversions - or 62°C (145°F) - on water cooledversions - for one of the following reasons:CLOGGED CONDENSER (Air cooledversion)INSUFFICIENT FLOW OF COOLINGWATER (Water cooled version)FAN MOTOR OUT OF OPERATION (Aircooled version)AMBIENT TEMPERATURE HIGHER THEN40°C (100°F)it causes the total and immediate SHUT-OFFof the machine in order to prevent the unitfrom operating in abnormal and dangerousconditions.When the ice maker stops on account of thisprotective device, there is a simultaneousglowing of the RED LED, warning the user ofthe Hi Temperature situation.After having eliminated the source of thecondenser hi-temperature, to restart themachine it is necessary first to rotate for awhile the program selector on RE-SETposition then again on OPERATION positionor to unplug (wait few seconds) and plug inagain the unit. The ice machine resumes itsnormal operation by going through the 5minutes water filling phase.

At the start of the freezing cycle the refrigerantsuction or lo-pressure lowers rapidly to 1 bar -14 psig on models ACM 85, AC 125 and AC 175and to 2.5 bar (35 psig) on model AC 225 then itdeclines gradually - in relation with the growing ofthe ice thickness - to reach, at the end of thecycle, approx. 0 bar - 0 psig on models ACM 85,AC 125 and AC 175 and to 1.7 bar (24 psig) onAC 225 with the cubes fully formed in the cupmolds.The total length of the freezing cycle ranges from20 to 25 minutes.

Page 21

DEFROST OR HARVEST CYCLE (Fig.E and G)

As the electronic timer has carried the systemthroughout the second phase of freezing cycle,the defrost cycle starts.

ATTENTION. In case the unit is able toreach 0 °C (32°F) evaporating temperatu-re within 15 minutes, but after 45 minutesfrom the beginning of the freezing cycle ithas not yet reached the evaporator tem-perature of -15 °C (5°F) the machine goesstraight into the defrost cycle omittingthe timed portion of the freezing cyclerelied to the setting of the first four DIPSWITCHES.

NOTE. The length of the defrost cycle is pre-determined by the setting of the DIP SWITCHKEYS NO. 5, 6 and 7 and it is relied as wellto the ambient temperature as detailed inTable C.

The electrical components in operation duringthis phase are:COMPRESSORWATER INLET VALVEHOT GAS VALVEWATER DRAIN VALVEand theWATER PUMPon the first 15 seconds on model ACM 85 &AC 125-175 and on the first 30 seconds on modelAC 225.

The incoming water, passing through the waterinlet valve and the flow control, runs over theevaporator platen and then flows by gravitythrough the dribbler holes down into the sump/reservoir. (Fig. F and H )The water filling the sump/reservoir forces part ofthe surplus water from the previous freezingcycle to go out to the waste through the overflowpipe. This overflow limits the level of the sumpwater which will be used to produce the nextbatch of ice cubes.Meanwhile, the refrigerant as hot gas, dischargedfrom the compressor, flows through the hot gasvalve directly into the evaporator serpentine by-passing the condenser.The hot gas circulating into the serpentine of theevaporator warms up the copper molds causingthe defrost of the ice cubes. The ice cubes,released from the cups, drop by gravity onto aslanted cube chute, then through a curtainedopening they fall into the storage bin.

NOTE. The length of the defrost cycle,factory set, can change according to theambient temperature (as shown on Table C)in order to reduce it with high ambient tempe-rature and recover some of the time spent forthe longer freezing cycle.

At the end of the defrost cycle, the hot gas valve,the water inlet valve and the water drain valveclose and the machine starts again a new freezingcycle.

OPERATION - CONTROL SEQUENCE

At the start of freezing cycle the evaporatortemperature sensor controls the length of the firstpart of the freezing cycle. As it reaches apredetermined temperature it supplies a lowvoltage current to the P.C. BOARD in order toactivate the electronic timer which takes over thecontrol of the freezing cycle for a pre-fixed timeaccording to the DIP SWITCH keys setting(see Tab. B).

NOTE. The evaporator temperature sensor,factory pre-set, is the same for all the modelsand is not adjustable in the field.

Once completed the freezing cycle 2nd phasethe system goes automatically into the defrostcycle which has also a pre-fixed length that canslightly change in relation to the ambient tempe-rature as shown in Table C. At completion of thedefrost cycle the P.C. BOARD command the unitto start again a new freezing cycle.

OPERATION - ELECTRICAL SEQUENCEThe following charts illustrate which switchesand which components are ON or OFF during aparticular phase of the icemaking cycle.Refer to the wiring diagram for a reference.

BEGINNING FREEZE

Electrical components (Loads) ON OFF

Compressor ........................................... •Fan Motor (Air cooled only) and TRIAC ........ •Hot Gas Valve ........................................ •Water Inlet Valve .................................... •Water Drain Valve .................................. •P.C.Board Relay 1 Coil .......................... •P.C.Board Relay 2 & 3 Coil .................... •Water Pump ........................................... •Contactor Coil ........................................ •P.C.B. Timer ........................................... •

Elctronic Controls & Sensors ON OFF

Evaporator Sensor ................................. •Condenser Sensor ................................. •Ambient Sensor ...................................... •Ice Level Control .................................... •

TIMED FREEZE

Electrical components (Loads) ON OFF

Compressor ............................................ •Fan Motor (Air cooled only) and TRIAC ........ • •Hot Gas Valve ........................................ •Water Inlet Valve .................................... •Water Drain Valve .................................. •P.C.Board Relay 1 Coil .......................... •P.C.Board Relay 2 & 3 Coil .................... •Water Pump ........................................... •Contactor Coil ........................................ •P.C.B. Timer ........................................... •Electronic Controls & Sensors ON OFFEvaporator Sensor ................................. •Condenser Sensor ................................. • •Ambient Sensor ...................................... •Ice Level Control .................................... •

HARVEST (Drain portion - first 15 or 30 sec.)

Electrical components (Loads) ON OFFCompressor ............................................ •Fan Motor (Air cooled only)and TRIAC ......... •Hot Gas Valve ........................................ •Water Inlet Valve .................................... •Water Drain valve................................... •P.C.Board Relay 1 & 2 Coil .................... •P.C.Board Relay 3 Coil ............................... •Water Pump ........................................... •Contactor Coil ........................................ •P.C.B. Timer ........................................... •

Electronic Controls & Sensors ON OFFEvaporator Sensor ................................. •Condenser Sensor ................................. •Ambient Sensor ...................................... •Ice Level Control .................................... •

HARVEST (Water filling portion)

Electrical components (Loads) ON OFFCompressor ............................................ •Fan Motor (Air cooled only)and TRIAC ......... •Hot Gas Valve ........................................ •Water Inlet Valve .................................... •Water Drain valve................................... •P.C.Board Relay 1 & 2 Coil .................... •P.C.Board Relay 3 Coil ............................... •Water Pump ........................................... •Contactor Coil ........................................ •P.C. Board Timer ................................... •

Electronic Controls & Sensors ON OFFEvaporator Sensor ................................. •Condenser Sensor ................................. •Ambient Sensor ...................................... •Ice Level Control .................................... •

Page 22

COMPONENTS DESCRIPTION

A. EVAPORATOR TEMPERATURESENSOR

The evaporator temperature sensor probe,located in contact with the evaporator serpentine,detects the dropping of the evaporator tempera-ture during the freezing cycle and signals it bysupplying a current flow to the micro processor ofP.C. BOARD.According to the current received, the microprocessor supplies power to the electronic timerbuilt into the P.C. BOARD so that it takes controlof the length of the 2nd phase of freezing cycle.The length of the timed phase is pre-fixed by thesetting of the keys 1, 2, 3 and 4 of the DIPSWITCH.The activation of the electronic timer is indicatedby the lighting up of the RED LED placed in thefront of the P.C. BOARD.This lighting up occures usually in the mid periodof the freezing cycle and signals the switchingfrom the first to the second phase of the freezingcycle.

NOTE. Whenever, after 15 minutes from thebeginning of the freezing cycle, theevaporating temperature have not yetreached the value of 0°C (32°F), theP.C.Board switches OFF the machine withthe BLINKING of RED LED.

B. CONDENSER TEMPERATURE SENSOR

The condenser temperature sensor probe,located within the condenser fins (air cooledversion) or in contact with the tube coil (watercooled version) detects the condenser tempe-rature variations and signals them by supplyingcurrent, at low voltage, to the P.C. BOARD.In the air cooled versions, in relation to thedifferent current received, the micro processor ofthe P.C. BOARD supplies, through a TRIAC, thepower at high voltage to the fan motor so to coolthe condenser and to reduce its temperature.In case the condenser temperature rises andreaches 75°C (170°F) - on air cooled models - or62°C (145°F) - on water cooled models - thecurrent arriving to the micro processor is such tocause an immediate and total stop of the machineoperation.

C. AMBIENT TEMPERATURE SENSOR

The probe of this sensor, located in the front ofthe ice maker condenser (Air cooled version) andon the water supply line to the condenser (Watercooled version) has the function to detect theambient or the water temperature and by changingits own electrical resistance supplies a differentcurrent flow to the P.C. BOARD.This different current flow received by theP.C.BOARD, is elaborated by the micro processorin order to extend or shorten the defrost cyclelength (longer in cold ambient situations, shorterin warm ones).

OPERATING CHARACTERISTICS

ACM 85, AC 125 and AC 175

Freeze Cycle

Average DischargePressure A/C: 9.5÷8.5 bars (130÷110 psig)

Average DischargePressure W/C: 9 bars (125 psig)

Suction PressureEnd Freeze Cycle: 0 ÷ 0.1 bar (0 ÷ 1 psig)

AC 225

Freeze Cycle

Average DischargePressure A/C: 9.15 ÷ 17 bars (210÷240 psig)

Average DischargePressure W/C: 17 bars (240 psig)

Suction PressureEnd Freeze Cycle: 1.7 bar (24 psig)

REFRIGERANT CHARGE (R 134 A)

Air cooled Water cooled

ACM 85 290 gr (10.2 oz.) 250 gr (8.8 oz.)

AC 125 450 gr (15.9 oz.) 300 gr (10.6 oz.)

AC 175 450 gr (15.9 oz.) 330 gr (11.6 oz.)

REFRIGERANT CHARGE (R 404 A)

Air cooled Water cooled

AC 225 620 gr (22 oz.) 450 gr (16 oz.)

Page 23

D. ICE BIN LEVEL LIGHT CONTROL

The electronic ice bin level control, located intothe storage bin, has the function to stop theoperation of the ice machine when the light beambetween the light source and the sensor isinterrupted by the ice cubes stored into the bin.When the light beam is interrupted the RED LEDlocated in the front of the P.C. BOARD goes off;in case the light beam is constantly interruptedfor more than 60 seconds, the ice machine stopswith the glowing-up of the 2nd YELLOW LED tomonitor the situation of ice bin full.The 60 seconds of delay prevent that an icescoop movement or the ice dropping through theice chute (interrupting for a while the light beam)can stop the operation of the unit.As soon as the ice is scooped out (with theresumption of the light beam between the twoinfrared sensor of ice level control) the RED LEDis lighted up and after 6 seconds the ice machinerestarts again with the extinguishing the 2ndYELLOW LED.

E. P.C. BOARD (Data processor)

The P.C. BOARD , fitted in its plastic box locatedin the front of the unit, consists of two separatedprinted circuits one at high and the other at lowvoltage integrated with a program selector, oftwo fuses one on power in (100mA) and one onpower out (16 A), of five aligned LEDS monitoringthe operation of the machine, of two extramonitoring RED LEDS, of one DIP SWITCH withten keys, of one small jumper located on its backside, of input terminals for the leads of the sensorprobes and input and output terminals for theleads of the ice maker electrical wires.The P.C. BOARD is the brain of the system andit elaborates, through its micro processor, thesignals received from the four sensors in order tocontrol the operation of the different electricalcomponents of the ice maker (compressor, waterpump, solenoid valves, etc.).By turning the program selector it is possible toput the unit in the following different situations:

CLEANING/RINSING. The water pump is theonly electrical component in operation and itmust be used during the cleaning or the rinsingprocedure of the water system of ice machine.

STAND BY. The unit remain under electricalpower but OUT of operation. It can be used by theservice engineer in order to stop the unit duringthe service and inspection operations.

IN OPERATION. The unit is running through thefreezing and defrost cycles stopping automaticallyonly at full bin situation.

RE-SET/HI TEMPERATURE. To be selected toresume the unit operation when the ice makershuts off due to the intervention of the condensertemperature sensor (too high condensing tem-perature) or evaporator temperature sensor (toohigh after 15 minutes from the beginning of thefreezing cycle).

The five LEDS, placed in a row in the front of theP.C. BOARD, monitor the following situations:

GREEN LIGHTUnit under electricalpower

YELLOW LIGHTUnit shut-off at full storagebin

RED LIGHTUnit shut-off due to hicondensing temperature

RED LIGHT BLINKINGUnit shut-off due to hievaporating temperature

YELLOW LIGHTUnit in freezing cyclemode

YELLOW LIGHTUnit in cleaning/rinsingmode (not appearing inthe front panel)

By means of one small jumper, located on theback side of the P.C. Board, can be modifiedthe cut-OUT condensing temperature (safetytemperature) from 70°C (160 °F) - for air cooledversions to 62° (145 °F) - for water cooledversions.

F. DIP SWITCH

The P.C.BOARD which controls the entireoperation of the ice maker, has a DIP SWITCHwith ten switching keys which allow to set upthe micro processor program in order to extendor to shorten the length of freezing and defrostcycles in relation to the different model andversions of ice machines.

Page 24

The 8th DIP SWITCH key allows to make a rapidcheck up of the P.C. BOARD output connections(compressor, water pump, fan motor, water inletand hot gas solenoid valves) energizing them inrapid sequence (2 seconds) one by one.DURING THE AUTOMATIC OPERATION OFTHE ICE MAKER THIS KEY MUST BE SET INOFF POSITION.

ATTENTION. The check up of theP.C.BOARD output must be performed ina very short time in order to avoid frequentstart and stop (every few seconds) of theelectrical components which may damagethem specially the compressor.

The 9th key allows the operation of the waterpump even during the defrost cycle, as requiredwhen it is necessary to drain out the remainingwater from the sump.

The 10th key is used to supply power to the waterpump for the first 15 seconds of the defrost cycle(ACM 85, AC 125 & AC 175) - position OFF - andfor the first 30 seconds - position ON (AC 225).

LENGTH OF TIMED PORTION OF FREEZING CYCLE ACCORDING TO THEDIP SWITCH SETTING COMBINATIONS

The DIP SWITCH first four keys settingdetermines the length of the 2nd phase of

freezing cycle (controlled by the electronictimer) as detailed in the table B.

TAB. B

The DIP SWITCH keys 5, 6 and 7 settingdetermines the length of the defrost cycle

according to the ambient temperature sensor asspecified in table C.

LENGTH OF DEFROST CYCLE (IN SEC.) ACCORDING TO THEAMBIENT TEMPERATURE AND TO THE DIP SWITCH SETTING COMBINATIONS

TAB. C

G. WATER SPRAY SYSTEM

Through its nozzles, the water pumped, is sprayedin each individual cup to be frozen into ice.It consists of one spray platform on modelACM 85 and two separated spray platforms onAC 125-175 which have six spray nozzles each.On the AC 225 the spray bar is self rotating beingpropelled by a stream of water passing throughan hole located in one arm of the spray bar.

H. WATER PUMP

The water pump operates continually throughoutthe freezing cycle and on the first 15 or 30seconds of the defrost cycle so to such theremaining water from the sump tank (reach inmineral salts) and drain it out.During the freezing cycle the pump primes thewater from the sump to the spray system andthrough the spray nozzles sprays it into theinverted cup molds to be frozen into crystal clearice cubes.It is recommended that the pump motor bearingsbe checked at least every six months.

Page 25

I. WATER INLET SOLENOID VALVE -3/4 MALE FITTING

The water inlet solenoid valve is activated by themicro processor of the P.C. BOARD during thefirst 5 minutes of water filling phase as well asduring the defrost cycle.When energized it allows a metered amount ofincoming water to flow over the evaporator cavityto assist the hot gas in defrosting the ice cubes.The water running over the evaporator cavitydrops by gravity, through the dribbler holes of theplaten, into the sump reservoir where it will besucked by the water pump and primed to thespray system.

J. HOT GAS SOLENOID VALVE

The hot gas solenoid valve consists basically intwo parts: the valve body and the valve coil.Located on the hot gas line, this valve is energizedthrough the micro processor of P.C. BOARDduring the defrost cycle as well as during thewater filling phase.During the defrost cycle the hot gas valve coil isactivated so to attract the hot gas valve piston inorder to give way to the hot gas discharged fromcompressor to flow directly into the evaporatorserpentine to defrost the formed ice cubes.

K. FAN MOTOR (Air cooled version)

The fan motor is controlled through the P.C.BOARD and the TRIAC by the condenser tempe-rature sensor. Normally it operates only duringthe freezing cycle to draw cooling air through thecondenser fins. In the second part of the freezingcycle, the fan motor can run at intermittance asthe condenser pressure must be kept betweentwo corresponding head pressure values.

Page 26

L. COMPRESSOR

The hermetic compressor is the heart of therefrigerant system and it is used to circulate andretrieve the refrigerant throughout the entiresystem. It compresses the low pressurerefrigerant vapor causing its temperature to riseand become high pressure hot vapor which isthen released through the discharge valve.

M. WATER REGULATING VALVE(Water cooled version)

This valve controls the head pressure in therefrigerant system by regulating the flow of watergoing to the condenser.As pressure increases, the water regulating val-ve opens to increase the flow of cooling water.

N. CONTACTOR (AC 125-175 & AC 225)

Placed outside of the control box it is controlledby the P.C. BOARD in order to close or open theelectrical circuit to the compressor.

O. WATER DRAIN SOLENOID VALVE

The water drain solenoid valve, electricallyconnected in parallel to the water inlet and to thehot gas solenoid valves, is energized for all thelength of the defrost cycle.By means of the water pump, that remainsenergized for 15 or 30 seconds at the beginningof the defrost cycle, it allows the drain out of allremaining water (rich of minerals deposited duringthe previous freezing cycle) from the sump tank.By doing so it allows to the ice maker to makeevery new freezing cycle with new fresh water,avoiding thereby the accumulation of sedimentsand scales, which soon or later will cause thepartial or total clogging of the water system on theunit.

SMALLIDENTATION

LITTLE OR NOICE IN CENTEROF CUBES

THICK BULGESOLID ICE

ADJUSTMENT, REMOVALAND REPLACEMENT PROCEDURES

NORMAL SIZE-SHAPE

SHALLOW SIZE

OVER SIZE

A. ADJUSTMENT OF THE CUBE SIZE

CAUTION. Before performing actualadjustment of the cube size , check otherpossible causes for cube size problems,refer to the Service Diagnosis Section forproblem review and analysis.Do not perform any adjustment till theicemaking system has progressedthrough several complete freezing andharvest cycle, to observe size and qualityof ice cubes and whether or not the cubesize problem exists.

I. If the cubes are shallow size (Indentation istoo deep) probably the length of the secondphase of the freezing cycle is too short so, toextend such length you have to:

1. Locate the DIP SWITCH on the front of theP.C.Board.

2. Take note of the combination of the first fourDIP SWITCH KEYS and check the corrispondinglength of freezing cycle 2nd phase on Table B.

3. Set the same DIP SWITCH KEYS tocorrespond to the prior combination shown onTable B which allow an extention of two moreminutes of the length of the freezing cycle.

4. Observe the ice cubes in the next twoharvests and eventually repeat steps 2 and 3above until proper ice cubes size is achieved.See figure.

II. If the cubes are oversize size (Indentation istoo full) probably the length of the second phaseof the freezing cycle is too long.To shorten such length you have to:

1. Locate the DIP SWITCH on the front of theP.C.Board.

2. Take note of the combination of the first fourDIP SWITCH KEYS and check the corrispondinglength of freezing cycle 2nd phase on Table B.

3. Set the same DIP SWITCH KEYS tocorrespond to the next combination shown onTable B which allow a reduction of two minutes ofthe length of the freezing cycle.

4. Observe the ice cubes in the next twoharvests and eventually repeat steps 2 and 3above until proper ice cubes size is achieved.See figure.

WARNING. Disconnect electrical powersupply to icemaker whenever replacementprocedure are performed.

Page 27

B. REPLACEMENT OF EVAPORATORTEMPERATURE SENSOR

1. Remove front rear and top panels on modelsACM 85 and AC125-175 and top and left sidepanel on model AC 225.

2. Remove the evaporator cover and snap offthe metal clip securing the sensor probe to theserpentine.

3. Trace the evaporator sensor terminal plugon the rear side of the control box (blue color)and remove it from its socket by carefully pullingout the terminal plug securing clip.

4. To install the replacement evaporatorsensor follow the above steps in reverse.

C. REPLACEMENT OF CONDENSERTEMPERATURE SENSOR

1. Remove front panel and on AC 225, the leftside panel while on water cooled version ofACM 85 and AC 125-175 it is required to removeeven the rear panel.

2. Trace the condenser sensor probe locatedwithin the condenser fins on air cooled versionand withtrow it.On water cooled version remove it by openingthe plastic strap securing the probe to therefrigerant liquid line.

3. Trace the condenser sensor terminal plugon the rear side of the control box (black color)and remove it from its socket by carefully pullingout the terminal plug securing clip.

4. To install the replacement condenser sensorfollow the above steps in reverse.

D. REPLACEMENT OF AMBIENTTEMPERATURE SENSOR

1. Remove front panel and on AC 225, the leftside panel while on water cooled version ofACM 85 and AC 125-175 it is required to removeeven the rear panel.

2. Trace the ambient sensor probe holded onits metal bracket in front of the condenser fins-onair cooled version-and remove it by unloosing itssecuring plastic clamp.On water cooled version, remove it by openingthe plastic strap securing the probe on the watersupply line to the condenser.

3. Trace the ambient sensor terminal plug onthe rear side of the control box (red color) andremove it from its socket by carefully pulling outthe terminal plug securing clip.

4. To install the replacement ambient sensorfollow the above steps in reverse.

E. REPLACEMENT OF OPTICAL ICE LEVELCONTROL

1. Remove the front panel and on AC 225, theleft side panel while on water cooled version ofACM 85 and AC 125-175 it is required to removeeven the rear panel.

2. Trace the optical ice level control terminalplug (the only one with four terminal pins) on therear side of the control box and remove it from itssocket by carefully pulling out the terminal plugsecuring clip.

3. Remove the optical ice level control assyfrom the interior of the storage bin by unloosingits two securing screws.

4. Withtraw the entire optical ice level controlwire and terminal plug through the hole located inthe storage bin.

5. To install the replacement optical ice levelcontrol follow the above steps in reverse.

F. REPLACEMENT OF P.C. BOARD

1. Remove front panel.

2. Remove all sensor terminal plugs, locatedon the rear side of P.C. Board, by carefullyreleasing them out from their sockets clips.

3. Disconnect the terminal board connectionplug from the rear side of P.C. BOARD thenunloose the four screws holding the same to theplastic control box and remove it.

4. To install the replacement P.C. BOARDfollow the above steps on reverse.

G. REPLACEMENT OF THE WATER PUMP(ACM 85)

1. Remove top panel and evaporator cover.

2. Disconnect the wires from the water pumpmotor.

3. Unloose the screws holding the metalbracket of the water pump to the sump.

4. Through the curtined opening reach thedischarge port of the water pump and disconnectthe plastic hose.

5. Unloose screw, washer and lockwasherand take the water pump off the bracket.

6. To install the replacement pump follow theabove steps in reverse.

Page 28

H. REPLACEMENT OF THE WATER PUMP(AC 125-175)

1. Remove the rear panel by loosening itsscrews.

2. Open the storage bin door, locate the plastichose on the discharge port of the pump anddisconnect it from the water pump body.

3. Loosen the screw and the yellow greenground wire.Trace the pump leads and disconnect them.

4. Loosen the screw securing thr pump plateto the water reservoir and lift out the water pumpassembly.

5. Loosen the screw and lock washers and liftthe water pump off the bracket.

6. To install the replacement water pump followthe above steps on reverse.

I. REPLACEMENT OF THE WATER PUMP(AC 225)

1. Remove front and top panel.

2. Locate the water pump in the front rightcorner of the evaporator chamber.

3. Unloose the screw and the yellow greenground wire. Trace the pump electrical wire leadsand disconnect them.

4. Remove the two screws securing the pumpto sump tank.

5. Through the ice discharge opening removefirst the removable inner plate then trace theplastic hose and disconnect it from the port of thepump body.

6. Pull out the pump assy from sump.

7. To install the replacement pump follow theabove steps in reverse.

J. REPLACEMENT OF THE WATER INLETSOLENOID VALVE

1. Remove the rear panel on models ACM 85and AC 125-175 and the left side panel on modelAC 225.

2. Close the shut-off valve on the water supplyline and disconnect it from the water inlet fitting atthe rear of the cuber

3. Disconnect the electrical leads from thesolenoid valve.

4. Unscrew the two screws securing the inletsolenoid valve to the cabinet.

Page 29

5. Remove the corbin clamps and rubber hose;the valve is now free.

6. To install the replacement water inletsolenoid valve follow the above steps in reverse.

K. REPLACEMENT OF THE HOT GASVALVE COIL

1. Remove rear panel on ACM 85 andAC 125-175 and the left side panel on modelAC 225.

2. Unloose the nut securing the hot gas valvecoil to its body.

3. Trace the electric wires belonging to the hotgas valve coil and disconnect them; then lift thevalve coil fron the valve body.

4. To install the replacement hot gas valve coilfollow previous steps in reverse.

L. REPLACEMENT OF WATER DRAINSOLENOID VALVE

1. Remove the rear panel.

2. Trace and disconnect the electrical leadsfrom the water drain solenoid valve coil.

3. Remove the corbin clamps and the plastichoses from the valve.

4. Unloose the screws securing the valve tothe frame and remove it.

5. To install the replacement water drainsolenoid valve follow the above steps in reverse.

NOTE. When installing the new valve payattention to the water flow direction.

M. REPLACEMENT OF FAN MOTOR

1. Remove front and back panel on modelsACM 85 and AC 125-175 and the front and leftside panel on model AC 225.

2. Remove screws and yellow green groundwire. Trace the electrical leads of fan motor anddisconnect them.

3. Remove the bolts securing the fan motorbracket to the cabinet base and then remove theassembly.

4. To install the replacement fan motor followthe above steps in reverse.

NOTE. When installing a new fan motorcheck that the fan blades do not touch anysurfaces and move freely.

taking precautions to NOT OVERHEAT the drierbody.

5. Thoroughly evacuate the system to removemoisture and non condensable after drierreplacement.

6. Charge the system with proper refrigerantby weight (see data plate of machine) and checkfor leaks.

7. Replace panels previously removed.

R. REPLACEMENT OF HOT GAS VALVEBODY

1. Follow the steps in procedures K to removethe hot gas valve coil.

2. Recover the refrigerant from the systemand transfer it in a container so to reclaim orrecycle it.

3. Unsolder the refrigerant lines from the hotgas valve body and remove it from the unit.

NOTE. It is imperative to install a replace-ment drier whenever the sealed refrigerationsystem is open.Do not replace the drier until all other repairsor replacements have been completed.

4. To install the replacement hot gas valvebody follow the above steps in reverse.

NOTE. Thoroughly evacuate the system toremove moisture and non condensables afterhot gas valve replacement.

S. REPLACEMENT OF EVAPORATORPLATEN

1. Remove top rear and front panels.

2. Remove the plastic cover from the upperpart of the evaporator platen.

3. Remove the evaporator sensor probe takingoff the metal clips securing it to the evaporatorserpentine.


5. On ACM 85 and AC 125-175 remove thewater inlet tube from the evaporator chamberafter unloosing the appropriate screws.

6. Unsolder and disconnect the capillary tubeand hot gas line from one serpentine of evaporatorand the suction discharge line from the otherserpentine.

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N. REPLACEMENT OF PLASTIC CURTAIN(ACM 85 & AC 125-175)

1. Open the storage bin door to gain access tothe curtain.

2. Remove the plastic curtain from the clipsholding it, and take out.

3. To install the replacement plastic curtainfollow the above steps in reverse.

O. REPLACEMENT OF SPRAY PLATFORMAND CHUTE (ACM 85 & AC 125-175)

1. Follow the steps in procedure N to removethe plastic curtain.

2. Lift the plastic spray system from theevaporator housing and remove the corbin clampfastening the plastic hose to the port at thebottom of the spray platform.

3. Disconnect the plastic hose from the sprayplatform inlet port and remove it.

4. To install the replacement spray platformfollow above steps in reverse.

P. REPLACEMENT OF SPRAY BAR(AC 225)

1. Slide open the bin door.

2. Reach through the ice opening and feel forthe spray bar.

3. Rotate spray bar so that one of its end isaligned with ice opening.

4. Grab the spray bar center and lift it up off thejet bearing hub together with its race washer thendraw it out through the ice opening.

5. To install the replacement spray bar followabove steps in reverse.

Q. REPLACEMENT OF DRIER



3. Unsolder the refrigerant lines from the twoends of the drier (on ACM 85 and AC 125 thecapillary tube from one side of the drier).

4. To install the replacement drier removefactory seals and solder the refrigerant lines (onACM 85 and AC 125-175 even the capillary tube)

7. Lift the evaporator platen assembly out ofits seat.


8. To install the replacement evaporator followthe above steps in reverse.

NOTE. Thoroughly evacuate the system toremove moisture and non condensables afterevaporator replacement.

T REPLACEMENT OF AIR COOLEDCONDENSER


2. Remove from the condenser fins thecondenser as well as the ambient temperaturesensor probes.

3. Remove the two bolts attaching thecondenser to the base.


5. Unsolder the refrigerant lines from thecondenser and remove it from the unit.

NOTE. It isimperative to install a replace-ment drier whenever the sealed refrigerationsystem is open.Do not replace the drier until all other repairsor replacements have been completed.

6. To install the replacement condenser followthe above steps in reverse.

NOTE. Thoroughly evacuate the system toremove moisture and non condensables aftercondenser replacement.

U. REPLACEMENT OF WATER COOLEDCONDENSER

1. Remove front and back panel on modelsACM 85 and AC 125-175 while the front and leftside panel on model AC 225.

2. Remove the condenser and the ambienttemperature sensor probes from condenser.

Page 31

3. Remove bolts which secure the condenserto the unit base.

4. Remove the corbin clamps and disconnectthe plastic hoses from the water cooledcondenser.


6. Unsolder the refrigerant lines from thecondenser and remove it from the unit.


7. To install the replacement condenser followthe above steps in reverse.

NOTE. Thoroughly evacuate the system toremove moisture and non condensables aftercondenser replacement.

V. REPLACEMENT OF WATERREGULATING VALVE(WATER COOLED MODELS)


2 Close the shut-off valve on the water supplyline and disconnect it at the rear of the cuber.

3. Remove corbin clamp and disconnect thewater hose from the outlet of water regulatingvalve.

4. Unloose the nut securing the waterregulating valve to the unit frame.


6. Trace the water regulating valve capillarytube and unsolder its end from the refrigerant linethen remove it from the unit.


7. To install the replacement water regulatingvalve follow the above steps in reverse.

NOTE. Thoroughly evacuate the system toremove moisture and non condensables afterwater regulating valve replacement.

NOTE. The water flow that passes throughthe valve can be adjusted by means of thevalve setting stem.

W. REPLACEMENT OF COMPRESSOR

1. Remove back and front panels on modelsACM 85 and AC 125-175 and the front and leftside panel on model AC 225.

2. Remove the cover and disconnect theelectrical leads from the compressor junctionbox.


4. Unsolder and disconnect both the suctionline and the discharge line from the compressor.

5. Remove the four compressor mounting boltsand the compressor from the unit base.


6. To install the replacement compressor followthe above steps in reverse.

NOTE. Thoroughly evacuate the system toremove moisture and non condensables aftercompressor replacement.

Page 32

Page 33

WIRING DIAGRAMACM 85 - AIR AND WATER COOLED 230/50/1

WIRING DIAGRAMAC 125-175 & AC 225 - AIR AND WATER COOLED 230/50/1

Page 34

SERVICE DIAGNOSIS

SYMPTOM POSSIBLE CAUSE SUGGESTED CORRECTION

Unit will not run Blown power in fuse in P.C.Board Replace fuse & check for cause of(No warning LEDS glows) blown fuse

Main switch in OFF position Turn switch to ON position

Inoperative P.C.Board Replace P.C.Board

Loose electrical connections Check wiring

(Green LED-Power ON glows) P.C.Board selector in STAND BY Move to OPERATING position

Blown power out fuse in P.C. Board Replace fuse & check for cause ofblown fuse

(Bin full LED glows) Inoperative ice level control Clean or replace ice level control


(Red-alarm LED glows) High head pressure Dirty condenser. CleanInoperative fan motor. ReplaceShortage of water (WC)

(Red-alarm LED blinks) High evaporating temperature Hot gas valve leak - Replace it.after 10 mins. beginning freeze Water inlet valve leak - Replace it.

Evap. sensor inoperative - Replace it.Short of refrigerant.

Compressor cycles intermittently Low voltage Check circuit for overloadingCheck voltage at the supply to thebuilding. If low, contact the powercompany

Contactor with burnt contacts Clean or replace

Non-condensable gas in system Purge the system

Compressor starting device with Check for loose wires in startingloose wires device

Mechanical problem Replace compressor

Cubes too small Freezing cycle too short Review setting of DIP SWITCH keys

Capillary tube partially restricted Blow charge, add new gas & drier,after evacuating systemwithvacuumpump

Moisture in the system Same as above

Shortage of water See remedies for shortage of water

Shortage of refrigerant Check for leaks & recharge

Inoperative evaporator sensor Replace sensor

Cloudy cubes Shortage of water See remedies for shortage of water

Dirty water supply Use water softner or water filter

Accumulated impurities Use SCOTSMAN Ice Machinecleaner

Spray bar not rotating (AC 225) Remove spray bar & jet bearingor slowly rotating and clean or replace them

Page 35

SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION

Shortage of water Water spilling out through curtain Check or replace curtain

Water solenoid valve not opening Replace valve

Water leak in sump area Locate and repair

Water flow control plugged Replace water inlet valve

Leak of water drain valve Replace valve

Irregular cubes size & some Some jets plugged Remove jet cover and cleancloudy

Shortage of water See shortage of water

Unit not level Level as required

Spray bar not rotating (AC 225) Remove spray bar & jet bearingand clean them

Cubes too large Freezing cycle too long Review setting of DIP SWITCH keys

Decreased ice capacity Inefficient compressor Replace

Leaky water valve Repair or replace

Non-condensable gas in system Purge the system

Poor air circulation or excessive Relocate the unit or provide forhot location (Red-alarm LED glows) more ventilation

Overcharge of refrigerant Correct the charge. Purge off slowly

Capillary tube partially restricted Blow charge, add new gas & drier,after evacuating system withvacuum pump

Hot gas solenoid valve leaking Replace valve

Undercharge of refrigerant Charge to data plate indication

Spray bar not rotating (AC 225) Remove spray bar & jet bearing andclean them

Discharge head pressure too high See incorrect discharge pressure

Poor harvest Too short defrost time Check & adjust DIP SWITCH keys 5-6-7

Inoperative ambient sensor Replace sensor

Restriction in incoming water line Check water valve strainer and flowcontrol. If necessary enlarge theflow control orifice

Water inlet valve not opening Valve coil with open windingReplace valve

Hot gas valve orifice restricted Replace hot gas valve assy

Air vented holes in mold cups Clean out holes plugged

Discharge head pressure too low See incorrect discharge pressure

SERVICE DIAGNOSIS

Page 36

SERVICE DIAGNOSIS

SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION

Unit won’t harvest Inoperative P.C.Board Replace P.C.Board

Hot gas valve not opening Valve coil with open windingReplace valve

Water solenoid valve not opening Valve coil with open windingReplace valve

Incorrect discharge pressure Inoperative condenser sensor Replace sensor


Water regulating valve misadjusted Adjust its setting stem

Excessive water in unit base Water tubing leaking Check. Tighten or replace

Page 37

MAINTENANCE AND CLEANING INSTRUCTIONS

Dip it into a tray filled with cleaning solution thenrinse it under tap water stream.

With a pick clean the orifice of the water streamjet that propells the spray bar.

NOTE.Cleaning requirements vary accordingto the local water conditions and individualuser operation. Continuous check of the clarityof ice cubes and visual inspection of thewater spraying parts before and after cleaningwill indicate frequency and procedure to befollowed in local areas.

5. With the ice machine and fan motor OFF onair cooled models, clean condenser using vacuumcleaner, whisk broom or non metallic brush takingcare to do not damage both the condenser andambient temperature sensors.

6. Check for water leaks and tighten drain lineconnections. Pour water down bin drain line to besure that drain line is open and clear.

7. Check size, condition and texture of icecubes. Perform adjustment of DIP SWITCH keysas required.

8. Check the ice level control sensor to testshut-off. Put your hand between the light sourceand the receiver so to cut off the light beam for atleast one minutes.This should cause the ice maker to shut off andthe light up of the 2nd LED (yellow light).

IMPORTANT. Perform the above checkonly at the end of harvest cycle or at thebeginning of freezing cycle in order to donot cause to the unit to make a doublefreezing cycle.

A. GENERAL

The periods and the procedures for maintenanceand cleaning are given as guides and are not tobe construed as absolute or invariable.Cleaning, especially, will vary depending uponlocal water and ambient conditions and the icevolume produced; and, each icemaker must bemaintened individually, in accordance with itsparticular location requirements.

B. ICEMAKER

The following maintenance should be scheduledat least two times per year on these icemakers.

1. Check and clean the water line strainer.

2. Check that the icemaker is levelled in sideto side and in front to rear directions.

3. Clean the water system, evaporator, binand spray platens (ACM 85 & AC 125-175) usinga solution of SCOTSMAN Ice Machine Cleaner.Refer to procedure C cleaning instructions andafter cleaning will indicate frequency and proce-dure to be followed in local areas.

4. On AC 225 reach the water spray bar fromthe inside of the freezing chamber lifting it from itsseat with its bottom trust washer.

Page 38

C. CLEANING INSTRUCTIONS OF WATERSYSTEM

1. Remove the front and the top panels to gainaccess either to the control box and to theevaporator.2. Wait till the end of defrost cycle then, withthe help of a normal screwdriver, turn the programselector head on STAND BY position to temporalystop the operation (Fig.8).

Cleaning3. Prepare the cleaning solution by diluting ina plastic container two or three liters of warmwater (45°-50°C) with a 0,2-0,3 liters ofSCOTSMAN Ice Machine Cleaner.

WARNING. The SCOTSMAN Ice MachineCleaner contains Phosphoric andHydroxyacetic acids. These compoundsare corrosive and may cause burns ifswallowed, DO NOT induce vomiting.Give large amounts of water or milk. CallPhysician immediately. In case of externalcontact flush with water. KEEP OUT OFTHE REACH OF CHILDREN

4. Scoop out all the ice cubes stored into thebin in order to prevent them from beingcontaminated with the cleaning solution thenflush out the water from the sump reservoir byremoving the overflow stand-pipe or drain plug.

NOTE. Within few seconds after the removalof the hand from the Infrared sensing light theicemaker restarts in freezing cycle.The ice level control uses devices that senselight, therefore they must be kept cleanenough so they can "see".Every month clean/wipe the sensing "eyes"with a clean soft cloth.

9. Check for refrigerant leaks.

Page 39

16

15

14

13

2

1

7

8

9

10

3

4

5

6

11

12

Rx Tx

WATER IN VALVE

HOT GAS VALVE

CONTACTOR COIL

FAN MOTOR

WATER PUMP

- EVAPORATOR

- AMBIENT

- CONDENSER

TEM

PERA

TURE

SEN

SORS

BIN

COM

PRES

SOR TRANSF.

DATA

PROC

ESSO

R

ELECTR.TIMER

DIPSWITCH

ELECTRONIC CARD

L

N

RELAYS

RELAY

TRIAC

WATER DRAIN VALVE

FIG. 7

5. Remove the evaporator cover then slowlypour onto the evaporator platen the cleaningsolution. With the help of a brush dissolve themost resistant and remote scale deposits in theplaten.

6. Set the program selector head onCLEANING/RINSING.The 5th YELLOW LED lights-up (Fig.9).

NOTE. With the system in CLEANING/RINSING mode the water pump is the onlycomponent in operation to circulate thecleaning solution in the entire water system.

7. Let the unit to remain in the CLEANING/RINSING mode for about 20 minutes then turnthe program selector on STAND BY again.

8. Flush out the cleaning solution from thesump reservoir then pour onto the evaporatorcavity two or three liters of clean potable water torinse the mold cups and the platen.If necessary remove the water spray bar or sprayplaten to clean them separately as per steps 3and 4 of paragraph B.

9. Turn again the program selector onCLEANING/RINSING. The water pump is againin operation to circulate the water in order to rinsethe entire water system.

10. Flush out the rinsing water from the sumpreservoir then turn the program selector onRE-SET/HI TEMPERATURE position andimmediately afterward to FREEZINGOPERATION.

NOTE. By setting the selector on RE-SETfirst and then to FREEZING OPERATIONthe ice maker will perform the 5 minutesWATER FILLING phase i.e. the water inletsolenoid valve opens to allow the incomingwater to rinse again the water system and toproperly fill-up the sump reservoir for thenext freezing cycle.

Sanitation

NOTE. Sanitation of the water system isrecommended to be done once a month.

11. Prepare in a plastic container the sanitationsolution as per manufacturer dilution using warmwater (45-50 °C).

NOTE. Never mix the cleaning with thesanitising solution.

12. Follow the procedures as per cleaning (fromitem 4 to item 10) just shorting the operation ofthe water pump to 10 minutes.

Page 40

16

15

14

13

2

1

7

8

9

10

3

4

5

6

11

Rx Tx

WATER IN VALVE

HOT GAS VALVE

FAN MOTOR

WATER PUMP

- EVAPORATOR

- AMBIENT

- CONDENSER

TEM

PERA

TURE

SEN

SORS

BIN

COM

PRES

SOR TRANSF.

DATA

PROC

ESSO

R

ELECTR.TIMER

DIPSWITCH

ELECTRONIC CARD

L

N

RELAYS

RELAY

TRIAC

WATER DRAIN VALVE

CONTACTOR COIL

12

FIG. 8

13. Place again the evaporator cover and theunit service panels.

14. At completion of the freezing and harvestcycle make sure of proper texture and clearnessof the ice cubes and that, they do not have anyacid taste.

ATTENTION. In case the ice cubes arecloudy, white and have an acid taste, meltthem immediately by pouring on them somewarm water. This to prevent that somebodycould use them.

15. Wipe clean and rinse the inner surfaces ofthe storage bin.

REMEMBER. To prevent the accumulationof undesirable bacteria it is necessary tosanitize the interior of the storage bin withan anti-algae disinfectant solution everyweek.

Page 41

SCOTSMAN - EUROPE

I C E S Y S T E M S

Via Puccini, 22 - 20010 Bettolino di Pogliano (Milano) ItalyTel. +39-2-93.96.02.08 - Telefax +39-2-93.55.05.00

Direct Line to Service & Parts:Tel. +39-331-58.93.05 - Fax +39-331-58-43.06 ISO 9001 - Cert. n° 0080

07 AC 85-225 - REV 01-2001

Documents

air cooled

peak performance

water cooled

average discharge

incorrect

water cooled

hot gas line

alarm led