Hoshizaki DCM-500BAH Service Manual
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Hoshizaki DCM-500BAH Service Manual

Cubelet icemaker / dispenser
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Hoshizaki
Hoshizaki America, Inc.
"A Superior Degree
of Reliability"
www.hoshizaki.com
Cubelet Icemaker / Dispenser
Models
DCM-500BAH
DCM-500BAH-OS
DCM-500BWH
DCM-500BWH-OS
SERVICE MANUAL
®
Number: 73165
Issued: 7-30-2008

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  • Page 1 Hoshizaki America, Inc. “A Superior Degree of Reliability” www.hoshizaki.com Cubelet Icemaker / Dispenser Models DCM-500BAH DCM-500BAH-OS DCM-500BWH DCM-500BWH-OS SERVICE MANUAL ® Number: 73165 Issued: 7-30-2008...
  • Page 2 Hoshizaki provides this manual primarily to assist qualified service technicians in the service and maintenance of the icemaker. Should the reader have any questions or concerns which have not been satisfactorily addressed, please call, write, or send an e-mail message to the Hoshizaki Technical Support Department for assistance. HOSHIZAKI AMERICA, INC.

  • Page 3: Table Of Contents

    4. Drain Cycle ... 1 5. Shutdown ... 1 D. Control Board ... 14 1. Control Board Layout ... 15 a) DCM-500BAH, DCM-500BWH ... 15 b) DCM-500BAH-OS, DCM-500BWH-OS ... 16 . Features ... 17 3. Controls and Adjustments ... 18 4.
  • Page 4 E. Performance Data ... 34 1. DCM-500BAH(-OS) ... 34 . DCM-500BWH(-OS) ... 35 IV. Service Diagnosis ... 36 A. Diagnostic Procedure ... 36 B. Ice Production Check ... 37 C. Diagnostic Charts ... 38 1. No Ice Production ... 38 .

  • Page 5: Specifications

    I. Specifications A. Icemaker 1. DCM-500BAH AC SUPPLY VOLTAGE COMPRESSOR GEAR MOTOR FAN MOTOR AGITATING MOTOR DISPENSING MOTOR OTHERS MAXIMUM FUSE SIZE MAX. HACR BREAKER (USA ONLY) MAX. CIRC. BREAKER (CANADA ONLY) MINIMUM CIRCUIT AMPACITY APPROXIMATE ICE PRODUCTION PER 24 HR.

  • Page 6: Dcm-500Bah-Os

    2. DCM-500BAH-OS AC SUPPLY VOLTAGE COMPRESSOR GEAR MOTOR FAN MOTOR AGITATING MOTOR DISPENSING MOTOR OTHERS MAXIMUM FUSE SIZE MAX. HACR BREAKER (USA ONLY) MAX. CIRC. BREAKER (CANADA ONLY) MINIMUM CIRCUIT AMPACITY APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day )

  • Page 7: Dcm-500Bwh

    3. DCM-500BWH AC SUPPLY VOLTAGE COMPRESSOR GEAR MOTOR AGITATING MOTOR DISPENSING MOTOR OTHERS MAXIMUM FUSE SIZE MAX. HACR BREAKER (USA ONLY) MAX. CIRC. BREAKER (CANADA ONLY) MINIMUM CIRCUIT AMPACITY APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without * marks SHAPE OF ICE ICE QUALITY APPROXIMATE STORAGE CAPACITY...

  • Page 8: Dcm-500Bwh-Os

    4. DCM-500BWH-OS AC SUPPLY VOLTAGE COMPRESSOR GEAR MOTOR AGITATING MOTOR DISPENSING MOTOR OTHERS MAXIMUM FUSE SIZE MAX. HACR BREAKER (USA ONLY) MAX. CIRC. BREAKER (CANADA ONLY) MINIMUM CIRCUIT AMPACITY APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without * marks SHAPE OF ICE ICE QUALITY APPROXIMATE STORAGE CAPACITY...

  • Page 9: General Information

    II. General Information A. Construction 1. DCM-500BAH(-OS) Evaporator Assembly Inlet Water Valve Float Switch Reservoir Control Box Power Switch Door Switch Gear Motor Control Switch Dispense Mode Switch Air-Cooled Condenser Shutter Assembly Expansion Valve Spout A Spout B Drier Drain Water Valve...
  • Page 10 2. DCM-500BWH(-OS) Evaporator Assembly Inlet Water Valve Float Switch Reservoir Control Box Power Switch Door Switch Gear Motor Control Switch Dispense Mode Switch Shutter Assembly Water-Cooled Condenser Expansion Valve Spout A Spout B Drier Drain Water Valve Storage Bin Agitator Ice Dispensing Auger Agitating Motor...

  • Page 11: Ice Making Unit

    B. Ice Making Unit 1. DCM-500BAH(-OS), DCM-500BWH(-OS) Extruding Head and Upper Bearing Auger Cylinder Evaporator Insulation Mechanical-Seal O-Ring Spline Coupling Gear Motor Cubelet Cutter Housing and Lower Bearing Allen Head Cap Screw Washer Allen Head Cap Screw with Washer Hex Head Bolt...

  • Page 12: Sequence Of Operation

    C. Sequence of Operation The steps in the sequence are as outlined below. When power is supplied, the power switch is in the "ON" position, the door switch is engaged, and the control switch is in the "ICE" position, the "POWER" LED on the control board comes on. 1.

  • Page 14: Control Board

    D. Control Board • A Hoshizaki exclusive solid-state control board is employed in DCM-500BAH, DCM-500BAH-OS, DCM-500BWH, and DCM-500BWH-OS Cubelet Icemaker / Dispensers. • All models are pretested and factory-adjusted. 1. Fragile, handle very carefully. . The control board contains integrated circuits, which are susceptible to failure due to static discharge.

  • Page 15: Control Board Layout

    1. Control Board Layout a) DCM-500BAH, DCM-500BWH Flush Switch Must be left in the "P" position, otherwise the internal drain timer will not operate. Counter Reset Button (not used in this application) Portion Control Timer "FLUSH" LED (X5 Relay) Drain Valve...

  • Page 16: B) Dcm-500Bah-Os, Dcm-500Bwh-Os

    DCM-500BAH-OS, DCM-500BWH-OS Flush Switch Must be left in the "P" position, otherwise the internal drain timer will not operate. Counter Reset Button (not used in this application) Portion Control Timer "WTR" LED (X5 Relay) Dispensing Water Valve "FLUSH" LED...

  • Page 17: Features

    2. Features The control board provides the following safeguards: • Provides component protection during low water supply. • Purges remaining ice in the evaporator at startup and shutdown. • Provides short cycle protection for the compressor. a) LED Lights The "POWER" LED indicates control voltage and will remain on unless a control voltage problem occurs.

  • Page 18: Controls And Adjustments

    . When the reservoir is full, the "GM" LED comes on and the gear motor starts. If the "GM" LED does not come on or the gear motor does not start, check that the following safety circuits are closed: a) high pressure switch (DCM-500BAH and DCM- 500BWH, connector K4 terminals 9 and 10, DCM-500BAH-OS and DCM-500BWH-OS, connector K4 terminals 5 and 6), b) low water safety/bin control/ice making switch circuit (connector K4 terminals 3 and 4).
  • Page 19 X (LBU) to neutral, the control board is bad and should be replaced. See wiring diagram "III.C.3. Freeze Cycle" for further details. c) Dispensing Components DCM-500BAH, DCM-500BWH 1. Ice Dispense "Continuous": Pressing the ice dispense switch closes terminals 6 and 5 at the K4 connector.

  • Page 20: Float Switch

    E. Float Switch Depending on local water conditions, scale may build up on the float switch. Scale on the switch can cause the floats to stick. In this case, the float switch should be cleaned and checked. First, remove the switch from the water tank. Soak the switch assembly in ice machine cleaner.

  • Page 21: Technical Information

    III. Technical Information A. Water Circuit and Refrigeration Circuit 1. DCM-500BAH(-OS) Inlet Water Valve Water Supply Reservoir Overflow Air-Cooled Condenser Access Valve Refrigeration Circuit Water Circuit Float Switch Water Level Evaporator Gear Motor Spout Drier Expansion Valve To Drain Drain...
  • Page 22 2. DCM-500BWH(-OS) Inlet Water Valve Water Supply Reservoir Overflow Water Supply In Water Supply Out Water Regulating Valve Float Switch Water Level Evaporator Gear Motor Water-Cooled Condenser Access Valve Refrigeration Circuit Water Circuit Spout Drier Expansion Valve To Drain Drain Valve Dispensing Water Valve...

  • Page 23: Wiring Diagrams

    B. Wiring Diagrams 1. DCM-500BAH, DCM-500BWH WIRE COLOR CODE BLACK BROWN BLUE DARK BLUE GRAY LIGHT BLUE ORANGE PINK VIOLET WHITE YELLOW W/BK WHITE/BLACK W/BR WHITE/BROWN W/BU WHITE/BLUE WHITE/ORANGE WHITE/RED (Control Board) * High Pressure Switch Air-Cooled Model Cut-out 412±...

  • Page 24: Dcm-500Bah-Os, Dcm-500Bwh

    2. DCM-500BAH-OS, DCM-500BWH-OS WIRE COLOR CODE BLACK BROWN BLUE DARK BLUE GRAY LIGHT BLUE ORANGE PINK VIOLET WHITE YELLOW W/BK WHITE/BLACK W/BR WHITE/BROWN W/BU WHITE/BLUE WHITE/ORANGE WHITE/RED (Control Board) Air-Cooled Model Cut-out Cut-in * High Pressure Switch Water-Cooled Model 412±...

  • Page 25: Sequence Of Electrical Circuit - Ice Making

    With the power switch in the "ON" position and the control switch in the "ICE" position, the inlet water valve energizes and the reservoir fills with water until the upper float switch closes. DCM-500BAH DCM-500BWH (Control Board) WIRE COLOR CODE...

  • Page 26: Ice Purge Cycle

    2. Ice Purge Cycle Upper float switch closes, water control relay energizes, inlet water valve closes, gear motor starts, gear motor protect relay energizes. DCM-500BAH DCM-500BWH (Control Board) WIRE COLOR CODE BLACK ORANGE W/BK WHITE/BLACK BROWN PINK W/BR WHITE/BROWN BLUE...

  • Page 27: Freeze Cycle

    3. Freeze Cycle Compressor and fan motor start 60 seconds after gear motor starts. DCM-500BAH DCM-500BWH (Control Board) WIRE COLOR CODE BLACK ORANGE W/BK WHITE/BLACK BROWN PINK W/BR WHITE/BROWN BLUE W/BU WHITE/BLUE DARK BLUE VIOLET WHITE/ORANGE GRAY WHITE WHITE/RED LIGHT BLUE...

  • Page 28: Hour Drain Cycle / Drain Switch

    In the 1 hour drain cycle, the drain water valve remains open for 0 minutes. When the drain cycle is initiated manually using the control switch, the drain valve remains open until the control switch is moved to the "ICE" position. DCM-500BAH DCM-500BWH 1 Hour Drain Cycle...

  • Page 29: Shutdown

    The bin control switch is activated and a 150 second shutdown sequence begins. After the bin control has been open for 90 seconds, the compressor and fan motor stop, the agitating motor operates for 0.6 seconds, and 60 seconds later the gear motor stops. DCM-500BAH DCM-500BWH (Control Board)

  • Page 30: Low Water Safety

    Upper float switch fails to close within 90 seconds after the lower float switch opens, the 150 second shutdown sequence begins. The inlet water valve remains open until the upper float switch closes. DCM-500BAH DCM-500BWH (Control Board) WIRE COLOR CODE...

  • Page 31: High Pressure Switch

    When the high pressure switch opens, the compressor stops immediately, 60 seconds later the gear motor stops. To restart, allow time for the high pressure switch to close, then move the power switch to the "OFF" position and then back to the "ON" position. DCM-500BAH DCM-500BWH (Control Board)

  • Page 32: Sequence Of Electrical Circuit - Dispensing

    Agitating motor energizes for .6 seconds for every 1 seconds of accumulative dispense time. Maximum dispense time per dispense switch activation is 60 seconds. After 60 seconds, the dispense switch must be disengaged and engaged again. DCM-500BAH DCM-500BWH (Control Board)

  • Page 33: Portion Dispense

    D.3.a) Portion Control." When shipped, the portion control is set at the minimum dispensing time (0.6 sec.). DCM-500BAH(-OS), DCM-500BWH(-OS) ... . Approximately 0.7 oz. Amount of ice dispensed per second.

  • Page 34: Performance Data

    E. Performance Data 1. DCM-500BAH(-OS) APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day) APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal. / day (l/day) EVAPORATOR OUTLET TEMP. °F (°C) HEAD PRESSURE PSIG (kg/cm SUCTION PRESSURE PSIG (kg/cm...

  • Page 35: Dcm-500Bwh(-Os)

    2. DCM-500BWH(-OS) APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( l/day) APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. (TOTAL) gal. / day (kl/day) EVAPORATOR OUTLET TEMP. °F (°C) HEAD PRESSURE PSIG (kg/cm SUCTION PRESSURE PSIG (kg/cm WATER FLOW FOR CONDENSER PRESSURE DROP OF COOLING WATER LINE HEAT OF REJECTION FROM CONDENSER HEAT OF REJECTION FROM COMPRESSOR...

  • Page 36: Service Diagnosis

    IV. Service Diagnosis A. Diagnostic Procedure This diagnostic procedure is a sequence check that allows you to diagnose the electrical system and components. Before proceeding, check for correct installation, adequate water supply (minimum of 10 PSIG, maximum of 113 PSIG) and proper voltage per unit nameplate.

  • Page 37: Ice Production Check

    6) Refill /Low Water Safety – As ice is produced, the water level in the reservoir drops. As the water level drops, the upper and lower float switches open. First, the upper float switch opens. Nothing occurs at this time. When the lower float switch opens, refill begins.

  • Page 38: Diagnostic Charts

    C. Diagnostic Charts 1. No Ice Production Problem Possible Cause [1] The icemaker will not a) Power Supply start. (Fill Cycle) b) Water Supply c) Power Switch (Control Box) d) Door Switch e) Power Protect Relay f) Transformer g) Fuses () h) Control Switch i) Water Control Relay j) Inlet Water Valve...
  • Page 39 Problem Possible Cause [1] The icemaker will m) High Pressure Switch not start. (Fill Cycle) (continued) n) Plug and Receptacle (Control Box) o) Control Board [] Fill cycle will not a) Water Supply terminate. b) Float Switch c) Water Control Relay d) Drain Valve e) Hoses f) Control Board...
  • Page 40 Problem Possible Cause [3] Ice purge cycle will a) Water Control Relay not start. b) Control Switch c) Bin Control d) Control Board e) Gear Motor Fuse f) Gear Motor Thermal Protector g) Gear Motor [4] Freeze cycle will not a) Gear Motor Protect start (compressor).

  • Page 41: Low Ice Production

    Problem Possible Cause [5] All components d) Evaporator run, but no ice is e) Water Supply Line produced. (continued) (water-cooled model only) f) Water Regulating Valve (water-cooled model only) 2. Low Ice Production Problem Possible Cause [1] Low ice production. a)Evaporator b)Bin Control c) Drain Valve...

  • Page 42: Other

    3. Other Problem Possible Cause [1] Icemaker will not stop a)Bin Control when bin is filled with ice. [] Abnormal noise. a)Fan Motor (except water-cooled model) b)Compressor c) Refrigerant Lines d)Auger e)Gear Motor f) Evaporator [3] Overflow from a)Water Supply reservoir (water does not stop).

  • Page 43: Dispensing

    4. Dispensing Problem Possible Cause [1] No ice dispensed. a) Power Supply b) Ice Storage c) Ice Dispense Switch d) Shutter Assembly e) Dispense Gear Motor f) Auger Mechanism g) Control Board [] Abnormal noise. a) Gear Motor or Gear Head b) Auger Mechanism c) Dispense Water...

  • Page 44: Opti Serve (Os) Sensors

    Problem Possible Cause [3] No water dispensed. a) Power Supply b) Water Supply c) Dispensing Water Valve d) Control Board e) Water Dispense Switch 1. Opti Serve sensor 5. Opti Serve (OS) Sensors Be sure to check all items in section "IV.C.4. Dipsensing" prior to using this chart. Use the following charts along with the wiring diagram to troubleshoot the OS sensors.
  • Page 45 5a. Ice Dispensing "Continuous" Mode Component Control Board Solenoid K Pin 6 LBU Sensor K5 Pin 4 W/0 5b. Ice Dispensing "Portion" Mode Component Control Board Solenoid K Pin 6 LBU Sensor K5 Pin 1 W/R 5c. Water Dispensing Component Control Board Solenoid K Pin 8 DBU...

  • Page 46: Removal And Replacement Of Components

    V. Removal and Replacement of Components 1. Ensure all components, fasteners, and thumbscrews are securely in place after the equipment is serviced. . The Polyol Ester (POE) oils used in R-404A units can absorb moisture quickly. Therefore it is important to prevent moisture from entering the system when replacing or servicing parts.

  • Page 47: Evacuation And Recharge (R-404A)

    5) Disconnect the vacuum pump and attach a refrigerant service cylinder to the high-side line. Remember to loosen the connection and purge the air from the hose. See the nameplate for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard No. 700-88 be used.

  • Page 48: Removal And Replacement Of Compressor

    B. Removal and Replacement of Compressor Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made. Note: When replacing a compressor with a defective winding, be sure to install the new start capacitor and start relay supplied with the replacement compressor.

  • Page 49: Removal And Replacement Of Expansion Valve

    C. Removal and Replacement of Expansion Valve Sometimes moisture in the refrigeration circuit exceeds the drier capacity and freezes up at the expansion valve. Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made.

  • Page 50: Removal And Replacement Of Evaporator Assembly Components

    D. Removal and Replacement of Evaporator Assembly Components Make sure the extruding head heater is installed and connected after service. Evaporator Assembly Power Switch Control Switch Dispense Mode Switch Fig. 1 CAUTION Spout A Spout B Allen Head Cap Screw Washer Allen Head Cap Screw with Washer...

  • Page 51: Upper Bearing Wear Check

    1. Upper Bearing Wear Check To ensure that the bearing inside the extruding head does not exceed the wear tolerance of .0", follow the instructions below. See Fig. . 1) Move the control switch to the "OFF" position, then turn off the power supply. Remove the front and top panels, then move the power switch to the "OFF"...

  • Page 52: Removal And Replacement Of Auger

    8) Replace spout A, spout B, and the front cover of the storage bin in their correct positions. 9) Move the power switch to the "ON" position, then replace the panels in their correct positions. 10) Turn on the power supply, then move the control switch to the "ICE" position to start the automatic icemaking process.
  • Page 53 3) Remove the apron panel, then remove the left side panel. 4) Recover the refrigerant and store it in an approved container. 5) Disconnect the drip tray hose from the tee. Remove the four screws securing the drip tray, then remove the drip tray and hose. 6) Remove the front cover of the storage bin.

  • Page 54: Removal And Replacement Of Mechanical Seal And Lower Housing

    5. Removal and Replacement of Mechanical Seal and Lower Housing 5a. Mechanical Seal 1) Move the control switch to the "DRAIN" position and drain all of the water from the evaporator. ) After the water has stopped draining, move the control switch to the "OFF" position, then turn off the power supply.

  • Page 55: Removal And Replacement Of Gear Motor

    18) Move the power switch to the "ON" position, then replace the panels in their correct positions. 19) Turn on the power supply, then move the control switch to the "ICE" position to start the automatic icemaking process. 6. Removal and Replacement of Gear Motor 1) Move the control switch to the "DRAIN"...

  • Page 56: Removal And Replacement Of Self-Contained Air-Cooled Condenser

    17) Move the power switch to the "ON" position, then replace the panels in their correct positions. 18) Turn on the power supply, then move the control switch to the "ICE" position to start the automatic icemaking process. E. Removal and Replacement of Self-Contained Air-Cooled Condenser Always install a new drier every time the sealed refrigeration system is opened.

  • Page 57: Removal And Replacement Of Water-Cooled Condenser

    F. Removal and Replacement of Water-Cooled Condenser Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made. 1) Move the control switch to the "OFF" position, then turn off the power supply. Remove the front and top panels, then move the power switch to the "OFF"...

  • Page 58: Removal And Replacement Of Water Regulating Valve - Water-Cooled Model Only

    G. Removal and Replacement of Water Regulating Valve - Water-Cooled Model Only Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made. 1) Move the control switch to the "OFF"...

  • Page 59: Adjustment Of Water Regulating Valve - Water-Cooled Model Only

    0) Move the power switch to the "ON" position, then replace the panels in their correct positions. 1) Turn on the power supply, then move the control switch to the "ICE" position to start the automatic icemaking process. H. Adjustment of Water Regulating Valve - Water-Cooled Model Only The water regulating valve (also called "water regulator") is factory-adjusted.

  • Page 60: Removal And Replacement Of Inlet Or Dispensing Water Valve

    J. Removal and Replacement of Inlet or Dispensing Water Valve 1) Close the water supply line shut-off valve. ) Open the water supply line drain valve. 3) Move the control switch to the "OFF" position, then turn off the power supply. Remove the front and top panels, then move the power switch to the "OFF"...

  • Page 61: Removal And Replacement Of Dispensing System

    10) Open the water supply line shut-off valve. 11) Turn on the power supply, move the power switch to the "ON" position, then replace the front panel in its correct position to engage the door switch. Move the control switch to the "ICE"...
  • Page 62 6) Install the new motor. 7) Assemble the removed parts in the reverse order of which they were removed. 8) Move the power switch to the "ON" position, then replace the panels in their correct positions. 9) Turn on the power supply, then move the control switch to the "ICE" position to start the Agitator Agitating Motor Dispensing Motor...

  • Page 63: Cleaning And Maintenance

    A. Cleaning and Sanitizing Instructions HOSHIZAKI recommends cleaning this unit at least twice a year. More frequent cleaning, however, may be required in some existing water conditions. 1. To prevent injury to individuals, do not use any ammonia type cleaners.

  • Page 64: Water System

    1. Water System a) Cleaning Solution Dilute 9.6 fl. oz. (0.9 l) of recommended cleaner, Hoshizaki "Scale Away" or "LIME-A- WAY" (Economics Laboratory, Inc.), with 1.6 gal. (6.0 l) of warm water. b) Cleaning Procedure 1) Close the water supply line shut-off valve.

  • Page 65: Sanitizing Solution

    Perform after cleaning and sanitizing the water system as outlined above. a) Cleaning Solution Dilute 9.6 fl. oz. (0.9 l) of recommended cleaner, Hoshizaki "Scale Away" or "LIME-A- WAY" (Economics Laboratory, Inc.), with 1.6 gal. (6.0 l) of warm water.
  • Page 66 3) Remove the front cover of the storage bin. 4) Remove the motor bracket thumbscrews, first from the vertical plane and then from the horizontal plane. While holding on to the corresponding agitator or auger, move the agitating motor or the dispensing motor towards you. Remove the agitator and the dispensing auger from the storage bin.

  • Page 67: Maintenance

    Consult with your local distributor about inspection and maintenance service. To obtain the name and phone number of your local distributor, visit www.hoshizaki.com or call Hoshizaki Technical Support at 1-800-33-1940 in the USA. 1. Only qualified service technicians should attempt to service or maintain this icemaker.

  • Page 68: Preparing The Icemaker For Long Storage

    C. Preparing the Icemaker for Long Storage When the icemaker is not used for two or three days under normal conditions, it is sufficient to only move the control switch to the "OFF" position. When storing the icemaker for extended time or in sub-freezing temperatures, turn the water off and drain out all water from the water lines and remove the ice from the storage bin.
  • Page 69 2. On water-cooled model only, remove the water from the water-cooled condenser: 1) Make sure the control switch and the power switch are in the "OFF" position and that the power supply is off. Remove the top, apron, and left side panels. ) Close the condenser water supply line shut-off valve and open the condenser water supply line drain valve.

This manual is also suitable for:

Dcm-500bwhDcm-500bwh-osDcm-500bah-os

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