Hoshizaki DCM-80LS-HC Service Manual
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Hoshizaki DCM-80LS-HC Service Manual

Hoshizaki DCM-80LS-HC Service Manual

Cubelet ice dispenser
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CUBELET ICE DISPENSER
SERVICE MANUAL
DCM-80LS-HC
DCM-80LS-P-HC
DCM-120LS-HC
DCM-120LS-P-HC
L040-1185 (082324)

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Summary of Contents for Hoshizaki DCM-80LS-HC

  • Page 1 CUBELET ICE DISPENSER DCM-80LS-HC DCM-80LS-P-HC DCM-120LS-HC DCM-120LS-P-HC SERVICE MANUAL L040-1185 (082324)

  • Page 2: Table Of Contents

    CONTENTS PAGE I. SPECIFICATIONS ----------------------------------------------------------------------------------------- 1 1. DIMENSIONS/SPECIFICATIONS --------------------------------------------------------------------- 1 [a] DCM-80LS-HC ----------------------------------------------------------------------------------------- 1 [b] DCM-80LS-P-HC -------------------------------------------------------------------------------------- 2 [c] DCM-120LS-HC ---------------------------------------------------------------------------------------- 3 [d] DCM-120LS-P-HC ------------------------------------------------------------------------------------- 4 2. CONSTRUCTION ------------------------------------------------------------------------------------------ 5 II. MAINTENANCE AND CLEANING INSTRUCTIONS ---------------------------------------------- 7 1. PERIODIC PARTS REPLACEMENT ------------------------------------------------------------------ 7 2.
  • Page 3 7. PERFORMANCE DATA -------------------------------------------------------------------------------- 32 [a] DCM-80LS(-P)-HC: 50Hz ------------------------------------------------------------------------- 32 [b] DCM-120LS(-P)-HC: 50Hz ----------------------------------------------------------------------- 33 8. ICE MAKING CAPACITY ------------------------------------------------------------------------------- 34 [a] DCM-80LS(-P)-HC: 50Hz [AT: 21°C, WT: 15°C] --------------------------------------------- 34 [b] DCM-80LS(-P)-HC: 50Hz [AT: 32°C, WT: 21°C] --------------------------------------------- 35 [c] DCM-120LS(-P)-HC: 50Hz [AT: 21°C, WT: 15°C] ------------------------------------------- 36 [d] DCM-120LS(-P)-HC: 50Hz [AT: 32°C, WT: 21°C] ------------------------------------------- 37 IV.

  • Page 4: Specifications

    I. SPECIFICATIONS 1. DIMENSIONS/SPECIFICATIONS [a] DCM-80LS-HC...

  • Page 5: [B] Dcm-80Ls-P-Hc

    [b] DCM-80LS-P-HC...
  • Page 6 [c] DCM-120LS-HC...
  • Page 7 [d] DCM-120LS-P-HC...

  • Page 8: [C] Dcm-120Ls-Hc

    2. CONSTRUCTION Bin Control Switch Water Dispense Valve Shutter Ice Storage Bin Thermistor Operation Board Control Water Icemaking Switch Valve Safety Switch Float Switch Dispense Switch *DCM-80/120LS-P-HC Front Cover Reservoir Spout Evaporator Push Lever *DCM-80/120LS-HC Lever Switch *DCM-80/120LS-HC Grille Drain Pan Water Supply Inlet Air Filter...
  • Page 9 Condenser Switching Regulator Control Box Fan Motor Controller Board Operation Switch Drier Expansion Valve Compressor Gear Motor...

  • Page 10: Maintenance And Cleaning Instructions

    II. MAINTENANCE AND CLEANING INSTRUCTIONS IMPORTANT 1. This ice dispenser must be maintained individually, referring to the instruction manual and labels provided with the ice dispenser. 2. To achieve optimum ice dispenser performance, the following parts need periodic inspection and maintenance: Extruding head (upper bearing) Housing (lower bearing) Mechanical seal...
  • Page 11 This information is provided on the label attached to the front panel and in the instruction manual. But instruct the user to contact a Hoshizaki service agent for replacement as soon as the service call lamp lights up and the display starts flashing “PC”.

  • Page 12: Extruding Head (Upper Bearing), Housing (Lower Bearing)

    2. EXTRUDING HEAD (UPPER BEARING), HOUSING (LOWER BEARING) These parts should be replaced if a diametrical 0.5 mm Round Stock or Pin Gauge gap of more than 0.5 mm is found when at least three spots are checked by changing the direction of the auger on each bearing.

  • Page 13: Condenser

    5. CONDENSER Check the condenser once a year, and clean if required by using a brush or vacuum cleaner. More frequent cleaning may be required depending on the location of the ice dispenser. 6. AIR FILTER Plastic mesh air filters remove dirt or dust from the air, and keep the condenser from getting clogged.

  • Page 14: Control Water Valve And Water Dispense Valve

    7. CONTROL WATER VALVE AND WATER DISPENSE VALVE 1) Unplug the ice dispenser. 2) Close the water supply tap. 3) Disconnect the fitting from the valve. 4) Clean the filter packing using a brush. 5) Replace the filter packing and fitting in their correct positions. 6) Open the water supply tap.

  • Page 15: Cleaning Of Water System

    8. CLEANING OF WATER SYSTEM WARNING 1. HOSHIZAKI recommends cleaning this unit at least twice a year. More frequent cleaning, however, may be required in some existing water conditions. 2. Do not touch the operation switch and icemaking switch with damp hands.
  • Page 16 2) Remove all ice from the storage bin as follows: [Dispensing ice using the bucket holder] (1) Press and hold the ice, ice & water and water switches together for 3 seconds. The ice switch flashes rapidly, and the dispense switch flashes slowly. Then the unit enters the continuous ice dispensing mode.
  • Page 17 (7) Refit the bucket holder, drain pan and grille. Note: Make sure that the drain pan is inserted fully into place. (8) Press the ice, ice & water or water switch to reset the continuous dispensing mode. (9) Remove the front cover. (10) Make sure that the “DRAIN”...
  • Page 18 Note: 1. If the machine has heavy deposits of scale, repeat the complete cleaning procedure. 2. Do not increase the proportion of cleaning solution to shorten cleaning times, as this may lock the auger when completing item 7). <STEP 3> Note: Sanitising should always be completed after cleaning or alternately as an individual procedure if conditions exist to make it necessary.

  • Page 19: Technical Information

    III. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT Control Water Valve Storage Bin Float Switch Water Supply Reservoir Inlet Freezer (Evaporator) Expansion Valve Water Dispense Valve Flush Water Valve Gear Motor Drier Condenser Compressor Thermistor Water Circuit Refrigerant Circuit...

  • Page 20: Wiring Diagram

    2. WIRING DIAGRAM...

  • Page 21: Icemaking Mechanism

    3. ICEMAKING MECHANISM Bin Control Switch Storage Bin Cover Bracket - Solenoid Inside Cover Solenoid Balance Plate (B) Ice Storage Bin Agitator Shutter Assembly Drip Ring Insulation Ice Chute O-ring Evaporator Top Cover Auger Extruding Head Evaporator Sealing Bolt Mechanical Seal Water Supply Pipe Housing O-ring...

  • Page 22: [A] Evaporator (Casing)

    [a] EVAPORATOR (CASING) The evaporator consists of a stainless steel icemaking cylinder coiled with a refrigeration pipe and wrapped together with a polyurethane foam insulation material. Water coming from the inlet into the evaporator will be frozen into ice. The ice spout is located on top of the evaporator.

  • Page 23: [H] Sealing Bolt

    [h] SEALING BOLT Sometimes the icemaking operation may produce white solids on the drip pan. They are deposits of silica and calcium contents in the icemaking water leaking from the sealing bolt. The bolt is provided with retaining and sealing functions, which may be reduced by the load and vibration during a freeze cycle.

  • Page 24: Electric Circuit

    4. ELECTRIC CIRCUIT CAUTION Reassemble all the components as they were after servicing the unit according to a service call. [a] BASIC OPERATION The ice dispenser starts water supply when the operation switch and icemaking switch are moved to the “ON” position. On completion of water supply, the gear motor starts immediately.

  • Page 25: [B] Timing Chart

    [b] TIMING CHART...

  • Page 26: Operation Board

    5. OPERATION BOARD [a] DISPLAYING COMPRESSOR OPERATING HOURS Press and hold for 3 seconds. 1) Remove the front cover. 2) Press and hold the ice switch and ice & water switch. 3) After 3 seconds, the display shows the compressor operating hours. Note: The display shows the compressor operating hours in six digits divided into three parts (two digits for 2 seconds each time).

  • Page 27: [C] Displaying Model Number

    By using the freeze cycle time, approximate ice production capacity can be calculated. Ice production capacity (kg/d) = 28,000 / cycle time (sec) [c] DISPLAYING MODEL NUMBER Press and hold for 3 seconds. Press twice. Press and hold. 1) Remove the front cover. 2) Press and hold the ice switch and ice &...

  • Page 28: [E] Displaying Controller Board Software Version

    [e] DISPLAYING CONTROLLER BOARD SOFTWARE VERSION Press and hold for 3 seconds. Press three times. Press and hold. 1) Remove the front cover. 2) Press and hold the ice switch and ice & water switch. 3) After 3 seconds, the display shows the compressor operating hours. 4) While still holding down the ice &...

  • Page 29: [H] Resetting Error Log

    Note: 1. The display shows up to eight errors from the latest error. 2. If there is no error log, the display shows “- -”. 3. Ongoing errors appear from the smallest error code, not from the latest error. [h] RESETTING ERROR LOG Press and hold after indications light up.

  • Page 30: [K] Displaying Number Of Times Turning Off Icemaking Switch

    [k] DISPLAYING NUMBER OF TIMES TURNING OFF ICEMAKING SWITCH Press three times. Press and hold for 3 seconds. Press and hold. 1) Remove the front cover. 2) Press and hold the ice switch and ice & water switch. 3) After 3 seconds, the display shows the compressor operating hours. 4) While still holding down the ice &...

  • Page 31: Error Codes

    6. ERROR CODES Interlock Errors Code Error Condition Operation Reset Check/Repair Interval between reservoir Inlet hose clogged water supplies exceeds: or deformed, water leak from water valve DCM-80LS(-P)-HC connection, gas 1st freeze cycle leak, refrigeration minutes parts clogged (drier, Whole unit stops, then Low Ice 2nd cycle or later 20 expansion valve),...
  • Page 32 Code Error Condition Operation Reset Check/Repair Controller board, No error indication due Operation Operation board fails operation board, to communication error. Power supply, Board to communicate with communication line Error record only. Turn OFF - Turn Communication controller board for more between operation Whole unit stops.
  • Page 33 Code Error Condition Operation Reset Check/Repair While compressor is running, number of water supply cycles reaches in a row: Service call lamp DCM-80LS(-P)-HC flashes. Power supply, Bin control switch, Bin Control 12 times Display indicates "76". Turn OFF - Turn water leak, shutter, float Switch Error DCM-120LS(-P)-HC...
  • Page 34 Code Error Condition Operation Reset Check/Repair [20,000 hours] Service call lamp lights up. “PC” starts flashing. [20,500 hours] Service call lamp starts flashing. Whole unit stops but After replacing can be restarted by Periodic Parts Compressor operating parts, reset Replace periodic turning OFF and ON Replacement hours reach 20,000 hours.

  • Page 35: Performance Data

    7. PERFORMANCE DATA [a] DCM-80LS(-P)-HC: 50Hz DCM-80LS-HC 50Hz DCM-80LS-HC 50Hz 0.09 0.08 0.07 0.06 0.05 0.04 1.45 1.35 1.25 1700 1500 1300 1100 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 36: [B] Dcm-120Ls(-P)-Hc: 50Hz

    DCM-120LS-HC 50Hz [b] DCM-120LS(-P)-HC: 50Hz DCM-120LS-HC 50Hz 0.13 0.12 0.11 0.10 0.09 0.08 1700 1500 1300 1100 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 37: Icemaking Capacity

    8. ICEMAKING CAPACITY [a] DCM-80LS(-P)-HC: 50Hz Ambient temperature: 21°C Water temperature: 15°C Ice production: 65kg/day Storage bin capacity: 1.9kg Dispensing Minimum Dispensing Maximum Continuous Dispensing Capacity Amount Time With No ice With Full Ice Storage (1.9Kg) Per Cup Storage (0Kg) 40sec**** 153** (23sec***)

  • Page 38: [B] Dcm-80Ls(-P)-Hc: 50Hz [At: 32°C, Wt: 21°C]

    [b] DCM-80LS(-P)-HC: 50Hz Ambient temperature: 32°C Water temperature: 21°C Ice production: 50kg/day Storage bin capacity: 1.9kg Dispensing Minimum Dispensing Maximum Continuous Dispensing Capacity Amount Time With No ice With Full Ice Storage (1.9Kg) Per Cup Storage (0Kg) 51sec**** 131** (27sec***) 77sec (40sec) 103sec...

  • Page 39: [C] Dcm-120Ls(-P)-Hc: 50Hz [At: 21°C, Wt: 15°C]

    [c] DCM-120LS(-P)-HC: 50Hz Ambient temperature: 21°C Water temperature: 15°C Ice production: 110kg/day Storage bin capacity: 4kg Dispensing Minimum Dispensing Maximum Continuous Dispensing Capacity Amount Time With No ice With Full Ice Storage (4.0Kg) Per Cup Storage (0Kg) 24sec**** 286** (13sec***) 36sec (19sec) 48sec...

  • Page 40: [D] Dcm-120Ls(-P)-Hc: 50Hz [At: 32°C, Wt: 21°C]

    [d] DCM-120LS(-P)-HC: 50Hz Ambient temperature: 32°C Water temperature: 21°C Ice production: 90kg/day Storage bin capacity: 4kg Dispensing Minimum Dispensing Maximum Continuous Dispensing Capacity Amount Time With No ice With Full Ice Storage (4.0Kg) Per Cup Storage (0Kg) 29sec**** (14sec***) 258** 43sec (21sec) 58sec...

  • Page 41: Service Diagnosis

    IV. SERVICE DIAGNOSIS Display error records by operating the operation board (see “III. 5. [g] DISPLAYING ERROR LOG AND ONGOING ERROR”). Check for a possible cause and service the unit. 1. NO ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY [1] The ice dispenser a) Power supply 1.
  • Page 42 PROBLEM POSSIBLE CAUSE REMEDY [3] (Continued) d) Condenser 1. Dirty condenser fins. 1. Clean. thermistor 2. Ambient temperature 2. Check for recommended too warm. temperature. 3. Fan not rotating. 3. Replace. 4. Condenser water 4. Check and get recommended pressure too low or pressure.

  • Page 43: Low Ice Production

    2. LOW ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY [1] Low ice production a) Refrigerant line 1. Gas leaks. 1. See 1 - [5] - a). 2. Refrigerant line 2. Replace the clogged clogged. component. 3. Overcharged. 3. Recharge. b) High-side pressure 1.

  • Page 44: Others

    4. OTHERS PROBLEM POSSIBLE CAUSE REMEDY [1] Abnormal noise a) Fan motor 1. Bearing worn out. 1. Replace. (condenser unit) 2. Fan blade deformed. 2. Replace fan blade. 3. Fan blade does not 3. Replace. move freely. b) Compressor 1. Bearings worn out, 1.

  • Page 45: Removal And Replacement

    V. REMOVAL AND REPLACEMENT 1. EXTERIOR [a] TOP PANEL AND SIDE PANEL [Removal] 1) Remove the four screws securing the top panel. 2) Lift off the left side panel (no screws attached). 3) Lift off the right side panel (no screws attached). [Replacement] Replace the removed parts in the reverse order of which they were removed.

  • Page 46: [B] Front Panel

    7) Fit the top panel over the side panels and secure them with screws. Make sure that the top panel fits over the outside of side panels. 8) Refit the drain pan. [b] FRONT PANEL If possible, remove the side panels before removing the front panels. When removing the front panels without removing the side panels, follow the instructions below.
  • Page 47 3) Remove the two wire retainers (view from the backside). 4) Lift the front panel to unhook. Be careful not to break the hook tabs. 5) Disconnect the four connectors. [Replacement of front panel (UP)] Replace the removed parts in the reverse order of which they were removed. - Before installing the front panel, put the water pipe through the front panel.
  • Page 48 [Removal of front panel (LO)] 1) Remove the drain pan. 2) Remove the hose clamp from the black drain hose at the unit bottom. 3) Push the two tabs and slightly pull the front panel toward you. To avoid excessive load, do not tilt the panel too much.
  • Page 49 4) Push up the plastic projection from the round hole in the metal base and pull the front panel (LO) toward you while tilting its entire part diagonally. Make sure to fully push up the projection to avoid damaging it. Remove the front panel (LO) by tilting it diagonally without pulling the top toward you.

  • Page 50: Service For Refrigerant Lines

    WARNING Only trained service engineer can service the R290 refrigeration unit. 2. SERVICE FOR REFRIGERANT LINES [a] SERVICE INFORMATION 1) Allowable Compressor Opening Time and Prevention of Lubricant Mixture [R290] The compressor must not be opened more than 30 minutes in replacement or service. Do not mix lubricants of different compressors even if both are charged with the same refrigerant, except when they use the same lubricant.

  • Page 51: [B] Refrigerant Recovery

    7) Evacuation, Vacuum Pump and Refrigerant Charge [R290] Never allow the oil in the vacuum pump to flow backward. The vacuum level and vacuum pump may be the same as those for the current refrigerants. However, the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for R290.

  • Page 52: Welding Repair For R290 Refrigeration Circuit

    4) Close the low-side and high-side valves on the service manifold. 5) Disconnect the vacuum pump, and attach a refrigerant charging cylinder to accurately weigh in the liquid charge. Remember to purge any air from the charging hose. See the nameplate for the required refrigerant charge.

  • Page 53: Compressor

    WARNING Remove the R290 refrigerant from the unit in an area well-ventilated and free from open flames. Note: Attach an access valve for recharging the unit charged by a lock ring. 4. 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.

  • Page 54: Drier

    12) Braze the access, suction and discharge pipes (Do not change this order) with nitrogen gas flowing at the pressure of 0.2 - 0.3 bar. WARNING Always protect the compressor body around the suction pipe by using a damp cloth to prevent the inner plastic parts from overheating.

  • Page 55: Expansion Valve

    7) Evacuate the system, and charge it with refrigerant. See the nameplate for the required refrigerant charge (See “2. [d] EVACUATION AND RECHARGE”). 8) Refit the front cover in its correct position. 9) Plug in the ice dispenser. 6. EXPANSION VALVE IMPORTANT Sometimes moisture in the refrigerant circuit exceeds the drier capacity and freezes up at the expansion valve.

  • Page 56: Fan Motor

    12) Refit the front cover in its correct position. 13) Plug in the ice dispenser. 7. FAN MOTOR 1) Unplug the ice dispenser. 2) Remove the side panels. 3) Disconnect the lead wires at their connection. 4) Take out the fan motor with its bracket from the unit. Remove 4 screws.

  • Page 57: Extruding Head

    EXTRUDING HEAD 7) Remove the sealing bolts, and lift off the extruding head. 8) Check the bearing inside the extruding head. If it is worn out or scratched, replace the bearing. Note: Replacing the bearing needs a fitting tool. If it is not available, replace the whole extruding head.
  • Page 58 HOUSING AND MECHANICAL SEAL 16) The mechanical seal consists of two parts. One part rotates with the auger, the other is static and is fitted into a top recess in the housing. If the contact surfaces of these two parts become worn or scratched, the mechanical seal may leak water and should be replaced.

  • Page 59: Control Water Valve And Water Dispense Valve

    9. CONTROL WATER VALVE AND WATER DISPENSE VALVE 1) Unplug the ice dispenser. 2) Close the water supply tap. 3) Remove the panels. 4) Disconnect the terminals from the valve. 5) Loosen the fitting nut on the valve inlet, and remove the valve. Do not lose the packing inside the fitting nut.

  • Page 60: Controller Board

    13) Plug in the ice dispenser. 14) Check for water leaks. 15) Push the drain switch, and make sure water is flushing. 16) Refit the panels in their correct position. 11. CONTROLLER BOARD IMPORTANT A single type controller board is supplied as a service board. Some modifications and adjustment will be required to fit the ice dispenser models.

  • Page 61: Bin Control Switch Assembly

    12. BIN CONTROL SWITCH ASSEMBLY 1) Unplug the ice dispenser. 2) Remove the top panel. 3) Remove the storage bin cover. 4) Remove the bin control switch. 5) Remove the snap pin and E-ring, and disassemble the balance plate (B) and shaft. 6) Install the new bin control switch assembly.

  • Page 62: Storage Bin Assembly

    13. STORAGE BIN ASSEMBLY 1) Move the icemaking switch to the “OFF” position. 2) Press the push lever or dispense switch to dispense ice, and remove all ice from the storage bin. 3) Press the drain switch on the control panel. The display illuminates “DRAIN” during the 1 minute drain cycle.

This manual is also suitable for:

Dcm-80ls-p-hcDcm-120ls-hcDcm-120ls-p-hc

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