Hoshizaki Hoshizaki America, Inc. Cubelet Icemaker / Dispenser Models DCM-500BAH DCM-500BAH-OS DCM-500BWH DCM-500BWH-OS “A Superior Degree of Reliability” SERVICE MANUAL www.hoshizaki.
IMPORTANT Only qualified service technicians should attempt to install, service, or maintain this icemaker. No service or maintenance should be undertaken until the technician has thoroughly read this Service Manual. Failure to service and maintain the equipment in accordance with this manual may adversely affect safety, performance, and warranty coverage. Hoshizaki provides this manual primarily to assist qualified service technicians in the service and maintenance of the icemaker.
IMPORTANT This manual should be read carefully before the icemaker is serviced or maintenance operations are performed. Only qualified service technicians should install, service, and maintain the icemaker. Read the warnings contained in this booklet carefully as they give important information regarding safety. Please retain this booklet for any further reference that may be necessary. CONTENTS I. Specifications...............................................................................................
E. Performance Data........................................................................................................ 34 1. DCM-500BAH(-OS)................................................................................................. 34 2. DCM-500BWH(-OS)............................................................................................... 35 IV. Service Diagnosis............................................................................................................ 36 A.
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. lbs./day ( kg/day ) Reference without * marks SHAPE OF ICE ICE QUALITY APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) POTABLE WATER gal./24HR (gal./100 lbs.
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 ) Reference without * marks SHAPE OF ICE ICE QUALITY APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) POTABLE WATER gal./24HR (gal./100 lbs.
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 ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) POTABLE WATER WATER - COOLED CONDENSER gal./24HR (gal./100 lbs.
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 ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) POTABLE WATER WATER - COOLED CONDENSER gal./24HR (gal./100 lbs.
II. General Information A. Construction 1.
2.
B. Ice Making Unit 1.
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. Fill Cycle WV opens and the reservoir fills with water until UF/S closes. Note: GM will not start unless UF/S is closed. For details, see "IV. Service Diagnosis". 2. Ice Purge Cycle (60 seconds) "GM" LED is on.
1. Startup 3. 12 Hour Drain Cycle Shutdown & Restart 60 seconds GM off GMPR off DV on (DC only) 3. Drain Cycle DV on for 20 minutes BC closed or 20 Min. DT off (DC only) DV off (DC only) 12 hour DT reset (DC only) 4. 12 hour DC - Restart See "1. Fill Cycle" above 4. Ice Level Lowered See "1.
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. CAUTION 1. Fragile, handle very carefully. 2. The control board contains integrated circuits, which are susceptible to failure due to static discharge. It is especially important to touch the metal part of the unit before handling or replacing the board. 3.
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. Dispensing Components See "III. B. Wiring Diagrams" for details. High Pressure Switch Counter Reset Button (not used in this application) Bin Control, Control Switch, Low Water 10.
b) DCM-500BAH-OS, DCM-500BWH-OS Flush Switch Must be left in the "P" position, otherwise the internal drain timer will not operate. Bin Control, Control Switch, Low Water Safety Dispensing Components See "III.B. Wiring Diagrams" for details.
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. An LED illuminates for each relay as it is energized. For more information, see "II.C. Sequence of Operation.
3. Controls and Adjustments a) Portion Control When the dispense mode switch is placed in the "PORTION" position, a variable resistor (located on the control board) controls the ice dispense time. The figures on the label indicate dispensing time (sec.). When shipped, the portion control is set at the minimum dispensing time (0.6 sec.). DCM-500BAH(-OS), DCM-500BWH(-OS). . . . . . .Approximately 0.72 oz. Amount of ice dispensed per second. DCM-500BAH(-OS), DCM-500BWH(-OS) . . . . . . Approximately 1.2 oz. 4.
3. 60 seconds after the "GM" LED comes on, the "COMP" LED comes on, and the compressor and fan motor start. If the "COMP" LED does not come on 60 seconds after the gear motor starts, check that the gear motor protect relay contacts (connector K2 terminals 1 and 2) have closed. If the "COMP" LED is on and the compressor and fan motor did not start, check for 115/120V at X2 (LBU) and X2 (BR) on the control board to neutral.
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. While not necessary, the floats can be removed from the shaft during cleaning. If you remove them, note that the blue float is on top.
III. Technical Information A. Water Circuit and Refrigeration Circuit 1.
2.
B. Wiring Diagrams 1.
2.
C. Sequence of Electrical Circuit – Ice Making 1. Fill Cycle 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.
2. Ice Purge Cycle Upper float switch closes, water control relay energizes, inlet water valve closes, gear motor starts, gear motor protect relay energizes.
3. Freeze Cycle Compressor and fan motor start 60 seconds after gear motor starts.
4. 12 Hour Drain Cycle / Drain Switch 12 hour timer initiates cycle or the control switch is moved to the "DRAIN" position. 90 seconds after initiation, the compressor and condenser fan motor stop, 60 seconds later the gear motor stops. Once the gear motor protect relay de-energizes, the drain water valve opens. In the 12 hour drain cycle, the drain water valve remains open for 20 minutes.
5. 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.
6. 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.
7. 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.
D. Sequence of Electrical Circuit – Dispensing 1. Continuous Dispense Agitating motor energizes for .6 seconds for every 12 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.
2. Portion Dispense Agitating motor energizes for .6 seconds for every 12 seconds of accumulative dispense time. A variable resistor which controls the amount of ice dispensed is located on the control board. The figures on the label indicate dispensing time (sec.). See "II. 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 0.72 oz. Amount of ice dispensed per second.
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/cm2G) SUCTION PRESSURE PSIG (kg/cm2G) TOTAL HEAT OF REJECTION Ambient Temp. (°F) 70 80 90 100 70 80 90 100 70 80 90 100 70 80 90 100 70 80 90 100 70 80 90 100 Water Temp.
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/cm2G) SUCTION PRESSURE PSIG (kg/cm2G) Ambient Temp.
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. Always choose a white neutral wire to establish a good neutral connection when checking voltages. LEDs on the control board correspond to the components as they energize.
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. The water control relay de‑energizes, the 90 second low water safety timer begins, and the inlet water valve energizes. The compressor, fan motor, and gear motor continue to run.
C. Diagnostic Charts 1. No Ice Production Problem Possible Cause [1] The icemaker will not a) Power Supply start. (Fill Cycle) Remedy 1. Off, blown fuse, or tripped breaker. 1. Turn on, replace, or reset. 2. Loose connection. 2. Tighten. 3. Bad contacts. 3. Check for continuity and replace. 4. Not within specifications. 4. Refer to nameplate and correct. b) Water Supply 1. Water supply off or pressure too low. 1. Check and get recommended pressure. c) Power Switch (Control Box) 1.
Problem [1] The icemaker will not start. (Fill Cycle) (continued) Possible Cause Remedy m) High Pressure Switch 1. Bad contacts. 1. Check for continuity and replace. 2. Dirty air filter or condenser. 2. Clean. 3. Ambient or condenser 3. Reduce temperature. water temperature too warm. 4. Refrigerant overcharged. 4. Recover, evacuate, and recharge. 5. Fan not operating (except water-cooled model). 5. See "3.[2]a) Fan Motor." 6. Refrigerant line or 6.
Problem [3] Ice purge cycle will not start. Possible Cause Remedy a) Water Control Relay 1. Low water safety circuit open (bad contacts ). 1. Replace. b) Control Switch 1. Bad contacts. 1. Check for continuity and replace. c) Bin Control 1. Open. 1. Bin full, check for continuity on proximity switch. d) Control Board 1. Fails to operate gear motor relay. 1. See "II.D.4. Control Board Check Procedure." e) Gear Motor Fuse 1. Blown. 1. Check gear motor amperage, bearing wear (see "V.F.1.
Problem Possible Cause Remedy [5] All components d) Evaporator run, but no ice is e) Water Supply Line produced. (continued) (water-cooled model only) 1. Defective. 1. Replace. 1. Condenser water pressure too low or off and high pressure control opens and closes frequently. 1. Check and get recommended pressure. f) Water Regulating Valve 1. Water regulating 1. Clean, adjust, or replace. (water-cooled model valve set too high or only) clogged (water-cooled model only). 2.
3. Other Problem Possible Cause Remedy [1] Icemaker will not stop a)Bin Control when bin is filled with ice. 1. Actuator sticking. 1. Adjust or replace. 2. Proximity switch closed. 2. Replace. [2] Abnormal noise. 1. Bearing worn out. 1. Replace. 2. Fan blade deformed. 2. Replace fan blade. 3. Fan blade does not move freely. 3. Replace. a)Fan Motor (except water-cooled model) b)Compressor 2. Mounting pad out of position. 2. Reinstall. c) Refrigerant Lines 1.
4. Dispensing Problem [1] No ice dispensed. Possible Cause a) Power Supply b) Ice Storage c) Ice Dispense Switch d) Shutter Assembly e) Dispense Gear Motor f) Auger Mechanism g) Control Board [2] Abnormal noise. a) Gear Motor or Gear Head b) Auger Mechanism c) Dispense Water Solenoid 1. "OFF" position. 2. Loose connection. 3. Bad contacts. 4. Not within specifications. 1. No ice or little ice in storage bin. 2. Ice bridge or ice block formed. 3. Agitating motor defective. 1.
Problem Possible Cause [3] No water dispensed. a) Power Supply b) Water Supply c) Dispensing Water Valve d) Control Board 1. "OFF" position. 1. Water supply off or pressure too low. 1. Coil winding open. Remedy 1. Move to "ON" position. 1. Check and get recommended pressure. 1. Replace. 2. Wiring to dispensing water valve. 2. Check for loose or open connection. Repair or replace. 1. Defective. 1. See "II.D.4. Control Board Check Procedure." 1. See "5. Opti Serve (OS) Sensors." 2.
5a. Ice Dispensing "Continuous" Mode Component Solenoid Control Board K2 Pin 6 LBU Sensor - To Sensor K5 Pin 4 W/0 R To Control Board /Other Neutral/GND K5 Pin 5 Y K5 Pin 6 W/BR Sensor WH BK On Off 120VAC 0VAC 5VDC 0VDC 5VDC 5VDC Control Board /Other Neutral/GND K5 Pin 2 W/BU K5 Pin 3 W/BK Sensor WH BK On Off 120VAC 0VAC 5VDC 0VDC 5VDC 5VDC 5b. Ice Dispensing "Portion" Mode Component Solenoid Control Board K2 Pin 6 LBU Sensor - To Sensor K5 Pin 1 W/R R To 5c.
V. Removal and Replacement of Components IMPORTANT 1. Ensure all components, fasteners, and thumbscrews are securely in place after the equipment is serviced. 2. 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. 3. Always install a new drier every time the sealed refrigeration system is opened.
1) 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. Install the new drier with the arrow on the drier in the direction of the refrigerant flow. 2) Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG. 3) Use an electronic leak detector or soap bubbles to check for leaks.
B. Removal and Replacement of Compressor IMPORTANT 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.
C. Removal and Replacement of Expansion Valve IMPORTANT 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. 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" position.
D. Removal and Replacement of Evaporator Assembly Components CAUTION Make sure the extruding head heater is installed and connected after service. Evaporator Assembly Spout A Cutter Spout B Extruding Head Heater Power Switch Extruding Head and Upper Bearing Auger Pin Auger Control Switch Evaporator Bracket Dispense Mode Switch Allen Head Cap Screw Washer Allen Head Cap Screw with Washer Evaporator Mechanical Seal O-Ring Hex Head Bolt with Washer Housing and Lower Bearing Barrier Fig.
1. Upper Bearing Wear Check To ensure that the bearing inside the extruding head does not exceed the wear tolerance of .02", follow the instructions below. See Fig. 2. 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" position. 2) Remove the front cover of the storage bin. Remove spout B, .02" Round Stock then remove spout A and the cutter. See Fig. 1.
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. 3. Removal and Replacement of Auger 1) Move the control switch to the "DRAIN" position and drain all of the water from the evaporator.
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. Remove spout B, then remove spout A. See Fig. 1. 7) Remove the extruding head heater, then remove the allen head cap screws securing the extruding head. Using the cutter, lift out the auger assembly.
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. 2) After the water has stopped draining, 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" position. 3) Remove the front cover of the storage bin. Remove spout B, then remove spout A. See Fig. 1.
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" position and drain all of the water from the evaporator. 2) After the water has stopped draining, move the control switch to the "OFF" position, then turn off the power supply.
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 IMPORTANT Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repairs or replacement have been made.
F. Removal and Replacement of Water-Cooled Condenser IMPORTANT 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" position. 2) Remove the apron panel, then remove the left side panel.
G. Removal and Replacement of Water Regulating Valve ‑ Water‑Cooled Model Only IMPORTANT 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" position. 2) Remove the apron panel, then remove the left side panel.
20) Move the power switch to the "ON" position, then replace the panels in their correct positions. 21) 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. No adjustment is required under normal use. Adjust the water regulator, if necessary, using the following procedures.
J. Removal and Replacement of Inlet or Dispensing Water Valve 1) Close the water supply line shut-off valve. 2) 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" position. 4) Remove the apron panel. For the inlet water valve, remove the left side panel. For the dispensing water valve, remove the right side panel.
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" position. 12) Allow the icemaker to fill for two minutes. 13) Move the control switch to the "OFF" position. 14) Remove the front panel and check for water leaks. 15) Move the control switch to the "DRAIN" position.
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 automatic icemaking process. Agitator Agitating Motor Dispensing Motor Dispensing Auger Fig.
VI. Cleaning and Maintenance IMPORTANT Ensure all components, fasteners, and thumbscrews are securely in place after any cleaning or maintenance is done to the equipment. 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. WARNING 1. To prevent injury to individuals, do not use any ammonia type cleaners. 2.
1. Water System a) Cleaning Solution Dilute 9.6 fl. oz. (0.29 l) of Hoshizaki "Scale Away" with 1.6 gal. (6.0 l) of warm water. b) Cleaning Procedure 1) Close the water supply line shut-off valve. 2) Move the dispense mode switch to the "CONTINUOUS" position, then dispense all of the ice from the storage bin. 3) Move the control switch to the "DRAIN" position and allow the water system to drain for 5 minutes. Note: If the unit is running, the drain valve will not open until 2.
13) Move the control switch to the "OFF" position, then turn off the power supply. 14) Close the water supply line shut-off valve. c) Sanitizing Solution Dilute 0.82 fl. oz. (25 ml) of a 5.25% sodium hypochlorite solution (chlorine bleach) with 1.6 gal. (6.0 l) of warm water. d) Sanitizing Procedure - Following Cleaning Procedure 1) Make sure the control switch is in the "OFF" position, the power supply is off, and the water supply line shut‑off valve is closed.
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. See Fig. 6. 5) Remove the bin control assembly. See Fig. 7. 6) Remove the snap pin, shaft, and actuator. 7) Remove spout B, spout A, and their gaskets.
B. Maintenance This icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker. The schedule below is a guideline. More frequent maintenance, however, may be required depending on water quality, the icemaker's environment, and local sanitation regulations. Consult with your local distributor about inspection and maintenance service. To obtain the name and phone number of your local distributor, visit www.hoshizaki.
C. Preparing the Icemaker for Long Storage CAUTION 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. The storage bin should be cleaned and dried.
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. 2) Close the condenser water supply line shut-off valve and open the condenser water supply line drain valve. 3) Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve.