Hoshizaki IM-240DME User manual

NO.NO. E1CG-488E1CG-488
ISSUED: MAR. 10, 1999ISSUED: MAR. 10, 1999
REVISED: OCT. 10, 2002REVISED: OCT. 10, 2002
HOSHIZAKIHOSHIZAKI
STACKABLE CUBERSTACKABLE CUBER
MODELMODEL IM-240DMEIM-240DME
IM-240DWMEIM-240DWME
IM-240DSMEIM-240DSME
IM-240XMEIM-240XME
IM-240XWMEIM-240XWME
IM-240XSMEIM-240XSME
IM-240AMEIM-240AME
SERVICE MANUALSERVICE MANUAL

E1CG4880210E1CG4880210
CONTENTSCONTENTS PAGEPAGE
I.SPECIFICATIONSI.SPECIFICATIONS------------------------------------------------------------------------------------------------------------------------------------------------------------------------------11
1.DIMENSIONS/CONNECTIONS1.DIMENSIONS/CONNECTIONS ------------------------------------------------------------------------------------------------------------------------------------11
[a] IM-240DME (Air-cooled)[a] IM-240DME (Air-cooled)----------------------------------------------------------------------------------------------------------------------------------------------11
[b] IM-240DWME (Water-cooled)[b] IM-240DWME (Water-cooled)--------------------------------------------------------------------------------------------------------------------------------22
[c] IM-240DSME (Remote Air-cooled)[c] IM-240DSME (Remote Air-cooled)--------------------------------------------------------------------------------------------------------------------33
[d] IM-240XME (Air-cooled)[d] IM-240XME (Air-cooled)----------------------------------------------------------------------------------------------------------------------------------------------44
[e] IM-240XWME (Water-cooled)[e] IM-240XWME (Water-cooled) --------------------------------------------------------------------------------------------------------------------------------55
[f] IM-240XSME (Remote Air-cooled)[f] IM-240XSME (Remote Air-cooled)--------------------------------------------------------------------------------------------------------------------66
[g] IM-240AME (Air-cooled)[g] IM-240AME (Air-cooled)----------------------------------------------------------------------------------------------------------------------------------------------77
2. CONDENSER UNIT URC-240C-E2. CONDENSER UNIT URC-240C-E ----------------------------------------------------------------------------------------------------------------------------88
II.GENERALINFORMATIONII.GENERALINFORMATION--------------------------------------------------------------------------------------------------------------------------------------------------------99
1.CONSTRUCTION1.CONSTRUCTION------------------------------------------------------------------------------------------------------------------------------------------------------------------------99
[a] IM-240DME, IM-240XME[a] IM-240DME, IM-240XME--------------------------------------------------------------------------------------------------------------------------------------------99
[b]IM-240DWME, IM-240XWME[b] IM-240DWME, IM-240XWME ----------------------------------------------------------------------------------------------------------------------------1010
[c] IM-240DSME, IM-240XSME[c] IM-240DSME, IM-240XSME-------------------------------------------------------------------------------------------------------------------------------- 1111
[d]IM-240AME[d]IM-240AME --------------------------------------------------------------------------------------------------------------------------------------------------------------------------1212
2. CONTROLLER BOARD2. CONTROLLER BOARD --------------------------------------------------------------------------------------------------------------------------------------------------1313
[a] CONTROLLER BOARD LAYOUT[a] CONTROLLER BOARD LAYOUT ------------------------------------------------------------------------------------------------------------------1414
[b] BEFORE CHECKING CONTROLLER BOARD[b] BEFORE CHECKING CONTROLLER BOARD ------------------------------------------------------------------------------1616
[c] SEQUENCE - LED INDICATORS ON/OFF PATTERN[c] SEQUENCE - LED INDICATORS ON/OFF PATTERN--------------------------------------------------------------1717
[d]FAULT DIAGNOSIS[d]FAULT DIAGNOSIS------------------------------------------------------------------------------------------------------------------------------------------------------1818
[e] CONTROLS AND ADJUSTMENT[e] CONTROLS AND ADJUSTMENT ----------------------------------------------------------------------------------------------------------------2020
3. FAN MOTOR CONTROL - DME/XME/AME ONLY3. FAN MOTOR CONTROL - DME/XME/AME ONLY --------------------------------------------------------------------------------2222
III.INSTALLATIONINSTRUCTIONSIII.INSTALLATIONINSTRUCTIONS ----------------------------------------------------------------------------------------------------------------------------------2323
1.UNPACKING1.UNPACKING--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------2323
2.LOCATION2.LOCATION ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------2525
3.INSTALLATION3.INSTALLATION --------------------------------------------------------------------------------------------------------------------------------------------------------------------------2626
[a] IM-240D, IM-240X[a] IM-240D, IM-240X----------------------------------------------------------------------------------------------------------------------------------------------------------2626
[b]IM-240A[b]IM-240A------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------2727
4. STACKING ICEMAKERS4. STACKING ICEMAKERS------------------------------------------------------------------------------------------------------------------------------------------------2828
5. ELECTRICAL CONNECTIONS5. ELECTRICAL CONNECTIONS --------------------------------------------------------------------------------------------------------------------------------3030
6. REMOTE CONDENSER UNIT (Remote Air-cooled Model Only)6. REMOTE CONDENSER UNIT (Remote Air-cooled Model Only) --------------------------------------------3131
[a]UNPACKING[a]UNPACKING ----------------------------------------------------------------------------------------------------------------------------------------------------------------------3131
[b]LOCATION[b]LOCATION ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------3232
[c]INSTALLATION[c]INSTALLATION------------------------------------------------------------------------------------------------------------------------------------------------------------------3232
[d] ELECTRICAL CONNECTIONS[d] ELECTRICAL CONNECTIONS------------------------------------------------------------------------------------------------------------------------3535
[e] STACKING CONDENSER UNITS[e] STACKING CONDENSER UNITS ----------------------------------------------------------------------------------------------------------------3636
7. WATER SUPPLY AND DRAIN CONNECTIONS7. WATER SUPPLY AND DRAIN CONNECTIONS--------------------------------------------------------------------------------------3636
8. FINAL CHECK LIST8. FINAL CHECK LIST ------------------------------------------------------------------------------------------------------------------------------------------------------------4141
IV.OPERATINGINSTRUCTIONSIV.OPERATINGINSTRUCTIONS ----------------------------------------------------------------------------------------------------------------------------------------4242
1. START UP1. START UP--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------4242
2. PREPARING THE ICEMAKER FOR LONG STORAGE2. PREPARING THE ICEMAKER FOR LONG STORAGE ------------------------------------------------------------------4444
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3.BIN CONTROL3.BIN CONTROL --------------------------------------------------------------------------------------------------------------------------------------------------------------------------4545
[a] BIN CONTROL SWITCHASSEMBLY[a] BIN CONTROL SWITCHASSEMBLY --------------------------------------------------------------------------------------------------------4545
[b] REMOVAL[b] REMOVAL ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------4646
[c] REASSEMBLING[c] REASSEMBLING ----------------------------------------------------------------------------------------------------------------------------------------------------------4646
V.MAINTENANCEINSTRUCTIONSV.MAINTENANCEINSTRUCTIONS --------------------------------------------------------------------------------------------------------------------------------4747
1. PERIODICAL CLEANING1. PERIODICAL CLEANING ----------------------------------------------------------------------------------------------------------------------------------------------4747
2. WATER VALVE2. WATER VALVE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------4949
3. WATER-COOLED CONDENSER3. WATER-COOLED CONDENSER--------------------------------------------------------------------------------------------------------------------------5050
4.ICEMAKINGWATERSYSTEM4.ICEMAKINGWATERSYSTEM----------------------------------------------------------------------------------------------------------------------------------5151
VI.TECHNICALINFORMATIONVI.TECHNICALINFORMATION--------------------------------------------------------------------------------------------------------------------------------------------5454
1.WATERCIRCUIT ANDREFRIGERANTCIRCUIT1.WATERCIRCUIT ANDREFRIGERANTCIRCUIT ----------------------------------------------------------------------------------5454
[a] IM-240DME, IM-240XME, IM-240AME (Air-cooled)[a] IM-240DME, IM-240XME, IM-240AME (Air-cooled) --------------------------------------------------------------------5454
[b] IM-240DWME,IM-240XWME (Water-cooled)[b] IM-240DWME,IM-240XWME (Water-cooled)------------------------------------------------------------------------------------5555
[c] IM-240DSME, IM-240XSME (Remote Air-cooled)[c] IM-240DSME, IM-240XSME (Remote Air-cooled) ------------------------------------------------------------------------5656
2.WIRINGDIAGRAM2.WIRINGDIAGRAM ----------------------------------------------------------------------------------------------------------------------------------------------------------------5757
[a] IM-240DME, IM-240XME[a] IM-240DME, IM-240XME----------------------------------------------------------------------------------------------------------------------------------------5757
[b]IM-240DWME, IM-240XWME[b] IM-240DWME, IM-240XWME ----------------------------------------------------------------------------------------------------------------------------5858
[c] IM-240DSME, IM-240XSME[c] IM-240DSME, IM-240XSME--------------------------------------------------------------------------------------------------------------------------------5959
[d]IM-240AME[d]IM-240AME --------------------------------------------------------------------------------------------------------------------------------------------------------------------------6060
3. PERFORMANCE DATA3. PERFORMANCE DATA --------------------------------------------------------------------------------------------------------------------------------------------------6161
VII.SERVICE DIAGNOSISVII. SERVICEDIAGNOSIS --------------------------------------------------------------------------------------------------------------------------------------------------------6464
1. NO ICE PRODUCTION1. NO ICE PRODUCTION------------------------------------------------------------------------------------------------------------------------------------------------------6464
2.LOWICEPRODUCTION2. LOW ICE PRODUCTION ------------------------------------------------------------------------------------------------------------------------------------------------6767
3. ABNORMAL ICE3. ABNORMAL ICE----------------------------------------------------------------------------------------------------------------------------------------------------------------------6868
4.OTHERS4.OTHERS------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------6969
VIII.ADJUSTMENTVIII.ADJUSTMENT ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------7070
1. EXPANSION VALVE1. EXPANSION VALVE------------------------------------------------------------------------------------------------------------------------------------------------------------7070
2. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY2. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY ------------------------------------6161
IX. REMOVAL AND REPLACEMENTIX. REMOVAL AND REPLACEMENT----------------------------------------------------------------------------------------------------------------------------7272
1. SERVICE FOR REFRIGERANT LINES1. SERVICE FOR REFRIGERANT LINES ------------------------------------------------------------------------------------------------------------7272
[a]SERVICE INFORMATION[a]SERVICE INFORMATION --------------------------------------------------------------------------------------------------------------------------------------7272
[b]REFRIGERANTRECOVERY[b]REFRIGERANTRECOVERY ----------------------------------------------------------------------------------------------------------------------------7373
[c] EVACUATING AND RECHARGE[c] EVACUATING AND RECHARGE ------------------------------------------------------------------------------------------------------------------7373
2. COMPRESSOR2. COMPRESSOR ----------------------------------------------------------------------------------------------------------------------------------------------------------------------7575
3.DRIER3.DRIER ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------7676
4. EXPANSION VALVE4. EXPANSION VALVE------------------------------------------------------------------------------------------------------------------------------------------------------------7777
5. EVAPORATOR5. EVAPORATOR--------------------------------------------------------------------------------------------------------------------------------------------------------------------------7878
6. HOT GAS VALVE6. HOT GAS VALVE ------------------------------------------------------------------------------------------------------------------------------------------------------------------7979
7. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY7. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY ------------------------------------8080
[a] VALVE BODY[a] VALVE BODY --------------------------------------------------------------------------------------------------------------------------------------------------------------------8080
[b] WHOLE VALVE[b] WHOLE VALVE --------------------------------------------------------------------------------------------------------------------------------------------------------------8080
8. WATER PAN ASSEMBLY8. WATER PAN ASSEMBLY ----------------------------------------------------------------------------------------------------------------------------------------------8282
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E1CG4880210E1CG4880210
9. PUMP MOTOR9. PUMP MOTOR --------------------------------------------------------------------------------------------------------------------------------------------------------------------------8484
10. WATER VALVE10. WATER VALVE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------8585
11.ACTUATORMOTOR11.ACTUATORMOTOR ----------------------------------------------------------------------------------------------------------------------------------------------------------8686
12. CAM ARM12. CAM ARM--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------8787
[a] CAM ARM (A) - ACTUATOR MOTOR SIDE[a] CAM ARM (A) - ACTUATOR MOTOR SIDE ----------------------------------------------------------------------------------------8787
[b] CAM ARM (B) - REAR SIDE[b] CAM ARM (B) - REAR SIDE ------------------------------------------------------------------------------------------------------------------------------8787
13.ACTUATORTOGGLESWITCH13.ACTUATORTOGGLESWITCH ------------------------------------------------------------------------------------------------------------------------------8888
14. CONTROLLER BOARD14. CONTROLLER BOARD --------------------------------------------------------------------------------------------------------------------------------------------------9191
[a]MODIFICATION[a]MODIFICATION ----------------------------------------------------------------------------------------------------------------------------------------------------------------9191
[b] REPLACEMENT[b] REPLACEMENT ------------------------------------------------------------------------------------------------------------------------------------------------------------9191
15. THERMISTOR FOR CUBE CONTROL15. THERMISTOR FOR CUBE CONTROL ------------------------------------------------------------------------------------------------------------9393
16. SURGE ABSORBER16. SURGE ABSORBER----------------------------------------------------------------------------------------------------------------------------------------------------------9494
17. FAN MOTOR - DME/XME ONLY17. FAN MOTOR - DME/XME ONLY ----------------------------------------------------------------------------------------------------------------------------9595
18. FAN MOTOR - DSME/XSME ONLY18. FAN MOTOR - DSME/XSME ONLY --------------------------------------------------------------------------------------------------------------------9595
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E1CG4880210E1CG4880210
I. SPECIFICATIONSI. SPECIFICATIONS
1. DIMENSIONS/CONNECTIONS1. DIMENSIONS/CONNECTIONS
[a] IM-240DME (Air-cooled)[a] IM-240DME (Air-cooled)

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[b] IM-240DWME (Water-cooled)[b] IM-240DWME (Water-cooled)

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[c] IM-240DSME (Remote Air-cooled)[c] IM-240DSME (Remote Air-cooled)

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[d] IM-240XME (Air-cooled)[d] IM-240XME (Air-cooled)

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E1CG4880210E1CG4880210
[e] IM-240XWME (Water-cooled)[e] IM-240XWME (Water-cooled)

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[f] IM-240XSME (Remote Air-cooled)[f] IM-240XSME (Remote Air-cooled)

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E1CG4880210E1CG4880210
[g] IM-240AME (Air-cooled)[g] IM-240AME (Air-cooled)

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2. CONDENSER UNIT URC-240C-E2. CONDENSER UNIT URC-240C-E
SPECIFICATIONSSPECIFICATIONS
MODEL: URC-240C-EMODEL: URC-240C-E
EXTERIOREXTERIOR Painted Galvanized SteelPainted Galvanized Steel
DIMENSIONS (W x D x H)DIMENSIONS (W x D x H) 657 x 399 x 426 mm657 x 399 x 426 mm
REFRIGERANTCHARGEREFRIGERANTCHARGE R404A 1000 gR404A 1000 g
WEIGHTWEIGHT Net 20 kgNet 20 kg
CONDENSERCONDENSER Air-cooledAir-cooled
HEAD PRESSURE CONTROLHEAD PRESSURE CONTROL Condensing Pressure RegulatorCondensing Pressure Regulator
AMBIENTCONDITIONAMBIENTCONDITION Min. 1Min. 1°C to Max. +40°C°C to Max. +40°C
OutdooruseOutdooruse

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EvaporatorEvaporator Bin Control SwitchBin Control Switch
Air-cooled CondenserAir-cooled Condenser
Water PlateWater Plate
Fan MotorFan Motor
CompressorCompressor
Hot Gas ValveHot Gas Valve
Actuator Toggle SwitchActuator Toggle Switch
Water ValveWater Valve
Water TankWater Tank
Pump MotorPump Motor
Drain PanDrain Pan
Actuator MotorActuator Motor
Control BoxControl Box
Top PanelTop Panel
Power CordPower Cord
Condensing UnitCondensing Unit
Front PanelFront Panel
Storage Bin (Optional)Storage Bin (Optional)
Bin DoorBin Door
Adjustable LegsAdjustable Legs
HandleHandle
Louver, Air FilterLouver, Air Filter
II. GENERAL INFORMATIONII. GENERAL INFORMATION
1. CONSTRUCTION1. CONSTRUCTION
[a] IM-240DME, IM-240XME[a] IM-240DME, IM-240XME

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EvaporatorEvaporator
Bin Control SwitchBin Control Switch
Water-cooledCondenserWater-cooledCondenser
Water PlateWater Plate
CompressorCompressor
Hot Gas ValveHot Gas Valve
Actuator Toggle SwitchActuator Toggle Switch
Water ValveWater Valve
Water TankWater Tank
Pump MotorPump Motor
Drain PanDrain Pan
Actuator MotorActuator Motor
Water Regulating ValveWater Regulating Valve
Control BoxControl Box
Top PanelTop Panel
Power CordPower Cord
Condensing UnitCondensing Unit
Front PanelFront Panel
Storage Bin (Optional)Storage Bin (Optional)
Bin DoorBin Door
Adjustable LegsAdjustable Legs
HandleHandle
[b] IM-240DWME, IM-240XWME[b] IM-240DWME, IM-240XWME

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E1CG4880210E1CG4880210
EvaporatorEvaporator Bin Control SwitchBin Control Switch
Water PlateWater Plate
CompressorCompressor
Access ValveAccess Valve
Hot Gas ValveHot Gas Valve
ReceiverTankReceiverTank
Actuator Toggle SwitchActuator Toggle Switch
Water ValveWater Valve
Water TankWater Tank
Pump MotorPump Motor
Drain PanDrain Pan
Actuator MotorActuator Motor
Control BoxControl Box
Top PanelTop Panel
Power CordPower Cord
Condensing UnitCondensing Unit
Front PanelFront Panel
Storage Bin (Optional)Storage Bin (Optional)
Bin DoorBin Door
Adjustable LegsAdjustable Legs
HandleHandle
Remote Condenser UnitRemote Condenser Unit
[c] IM-240DSME, IM-240XSME[c] IM-240DSME, IM-240XSME

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[d] IM-240AME[d] IM-240AME
EvaporatorEvaporator
Bin Control SwitchBin Control Switch
Water PlateWater Plate
Fan MotorFan Motor
CompressorCompressor
Hot Gas ValveHot Gas Valve
Actuator Toggle SwitchActuator Toggle Switch
Water ValveWater Valve
(Backside)(Backside)
Water TankWater Tank
Pump MotorPump Motor
Drain PanDrain Pan
Actuator MotorActuator Motor
Top PanelTop Panel
Power CordPower Cord
CondenserCondenser
Front PanelFront Panel
Storage Bin (Optional)Storage Bin (Optional)
Bin DoorBin Door
Adjustable LegsAdjustable Legs
HandleHandle

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2. CONTROLLER BOARD2. CONTROLLER BOARD
IMPORTANTIMPORTANT
If receiving a service call, ask the user to turn off the power to the icemaker andIf receiving a service call, ask the user to turn off the power to the icemaker and
turn it on again, while watching the icemaker. This will reset the controller, andturn it on again, while watching the icemaker. This will reset the controller, and
in some cases normal operation will resume.in some cases normal operation will resume.
CAUTIONCAUTION
1. Check that the icemaker has been earthed properly. If not, the Controller1. Check that the icemaker has been earthed properly. If not, the Controller
Board will not work properly.Board will not work properly.
2. Do not change wiring and connections, or the Controller Board will not work2. Do not change wiring and connections, or the Controller Board will not work
properly.properly.
3. Do not touch the reverse side of the Controller Board and tiny electronic3. Do not touch the reverse side of the Controller Board and tiny electronic
devices on it.devices on it.
4. Do not repair the electronic devices and parts on the Controller Board in the4. Do not repair the electronic devices and parts on the Controller Board in the
field. Replace the whole board assembly when it fails.field. Replace the whole board assembly when it fails.
5.Togetstaticfree,alwaystouchthemetalpart ofthe icemakerbeforeservicing.5.Togetstaticfree, alwaystouch themetalpartoftheicemakerbeforeservicing.
Electrostatic Discharge will cause severe damage to the Controller Board.Electrostatic Discharge will cause severe damage to the Controller Board.
6.TheSignalGroundWire mustbeconnectedtotheShieldPlatewhenreplacing6.TheSignalGroundWire mustbeconnectedtotheShieldPlatewhenreplacing
the Controller Board after service.the Controller Board after service.
7. The Controller Board is fragile. Handle with care.7. The Controller Board is fragile. Handle with care.
* Do not drop the board on the floor.* Do not drop the board on the floor.
* Make sure that the board is placed correctly into the guides in the Control* Make sure that the board is placed correctly into the guides in the Control
Box. Mis-alignmentcouldcausebreakagewhenreplacingtheControlBoxBox. Mis-alignmentcouldcausebreakagewhenreplacingtheControlBox
Cover.Cover.
* Handle the board by the edges only. Do not touch the electric parts and* Handle the board by the edges only. Do not touch the electric parts and
devices except the Transformer.devices except the Transformer.

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Thermistor (Cube Control)Thermistor (Cube Control)
Backup Timer VR3Backup Timer VR3
Connector K4Connector K4
Cube Control VR5Cube Control VR5
Defrost Control VR2Defrost Control VR2
Reset SwitchReset Switch
WaterSupplyTimeWater Supply Time
Setting JumperSetting Jumper
WiresWires
SignalGroundSignalGround
Connector K2Connector K2
Connector K1Connector K1
IDNumberIDNumber Connector K3Connector K3
[a] CONTROLLER BOARD LAYOUT[a] CONTROLLER BOARD LAYOUT

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See the diagram on the right for layout of theSee the diagram on the right for layout of the
Controller Board.Controller Board.
VR:VR: Variable ResistorVariable Resistor
No. 2 through No. 5 adjustableNo. 2 through No. 5 adjustable
K:K: ConnectorConnector
IC:IC: Integrated Circuit ChipIntegrated Circuit Chip
LED:LED: Light Emitting DiodeLight Emitting Diode
IndicatorLampIndicatorLamp
TF:TF: TransformerTransformer
X:X: RelayRelay
RESET:RESET: Reset SwitchReset Switch
To check the operation of theTo check the operation of the
board,pushtheResetButtononlyboard,pushtheResetButtononly
during the freeze cycle.during the freeze cycle.
RelayRelay
X1 - Actuator Motor and Pump MotorX1 - Actuator Motor and Pump Motor
X2 - Hot Gas Valve and Fan MotorX2 - Hot Gas Valve and Fan Motor
X3 - Water ValveX3 - Water Valve
X4 - CompressorX4 - Compressor
ControlControl
VR2 - Defrost ControlVR2 - Defrost Control
VR3 - Backup TimerVR3 - Backup Timer
VR5 - Cube ControlVR5 - Cube Control
All the controls are factory-adjusted. Do notAll the controls are factory-adjusted. Do not
change setting except when replacing thechange setting except when replacing the
board or if the setting has changed. Refer toboard or if the setting has changed. Refer to
“[e] CONTROLS AND ADJUSTMENT.”“[e] CONTROLS AND ADJUSTMENT.”

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COMCOM..
N.O.N.O.
N.C.N.C.
DEFROSTDEFROST FREEZEFREEZE
HolderHolder
ScrewScrew
ThermistorThermistor EvaporatorEvaporator
[b] BEFORE CHECKING CONTROLLER BOARD[b] BEFORE CHECKING CONTROLLER BOARD
Check the power source voltage and the components as shown in the table below.Check the power source voltage and the components as shown in the table below.
ComponentComponent
1. Actuator Toggle1. Actuator Toggle
SwitchSwitch
2.Thermistor2.Thermistor
(onEvaporator)(onEvaporator)
3. Bin Control Switch3. Bin Control Switch
ProcedureProcedure
Manually set the switch in the FREEZEManually set the switch in the FREEZE
andDEFROSTpositions,andchecktheandDEFROSTpositions,andcheckthe
continuity.continuity.
CAUTIONCAUTION
Thermistor Sensor part is fragile,Thermistor Sensor part is fragile,
glass sealed. Handle with care.glass sealed. Handle with care.
* Disconnect the Connector K4 on the* Disconnect the Connector K4 on the
board.board.
*Removethe screw andtheThermistor* Remove thescrewandthe Thermistor
Holder on the Evaporator.Holder on the Evaporator.
* Immerse the Sensor part in a glass* Immerse the Sensor part in a glass
containingiceandwaterfor5minutes.containingice andwaterfor5minutes.
* Check the resistance between K4* Check the resistance between K4
Connector Pins.Connector Pins.
* Replace the Thermistor in its correct* Replace the Thermistor in its correct
position.position.
* Connect K4.* Connect K4.
Manually set the Micro Switch in theManually set the Micro Switch in the
TRIP and RESET positions, and checkTRIP and RESET positions, and check
the period.the period.
NormalNormal
DEFROSTDEFROST
COM-NOCOM-NO OpenOpen
COM-NCCOM-NC CloseClose
FREEZEFREEZE
COM-NOCOM-NO CloseClose
COM-NCCOM-NC OpenOpen
5 -7 kilohms5 -7 kilohms
Approx.Approx.
TRIP(Closed)TRIP(Closed) 10 sec.10 sec.
RESET(Open)RESET(Open) 80 sec.80 sec.