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Hoshizaki IM-240DME Service Manual
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Hoshizaki IM-240DME Service Manual

Hoshizaki IM-240DME Service Manual

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MODULAR CUBER
MODEL
SERVICE MANUAL
HOSHIZAKI
IM-240DME
IM-240DWME
IM-240DSME
IM-240XME
IM-240XWME
IM-240XSME
IM-240AME
IM-240AWME
NO.
E1CG-488
ISSUED:
MAR. 10, 1999
REVISED: JUL. 27, 2005

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Summary of Contents for Hoshizaki IM-240DME

  • Page 1 E1CG-488 ISSUED: MAR. 10, 1999 REVISED: JUL. 27, 2005 HOSHIZAKI MODULAR CUBER IM-240DME MODEL IM-240DWME IM-240DSME IM-240XME IM-240XWME IM-240XSME IM-240AME IM-240AWME SERVICE MANUAL...
  • Page 2 CONTENTS PAGE I. SPECIFICATIONS ------------------------------------------------------------------------------------- 1 1. DIMENSIONS/CONNECTIONS----------------------------------------------------------------- 1 [a] IM-240DME (Air-cooled) --------------------------------------------------------------------- 1 [b] IM-240DWME (Water-cooled) -------------------------------------------------------------- 2 [c] IM-240DSME (Remote Air-cooled) -------------------------------------------------------- 3 [d] IM-240XME (Air-cooled) --------------------------------------------------------------------- 4 [e] IM-240XWME (Water-cooled) -------------------------------------------------------------- 5 [f] IM-240XSME (Remote Air-cooled) -------------------------------------------------------- 6...
  • Page 3 4. ICEMAKING WATER SYSTEM ---------------------------------------------------------------- 53 VI. TECHNICAL INFORMATION --------------------------------------------------------------------- 56 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT ----------------------------------------- 56 [a] IM-240DME, IM-240XME, IM-240AME (Air-cooled) ---------------------------------- 56 [b] IM-240DWME, IM-240XWME (Water-cooled) ----------------------------------------- 57 [c] IM-240DSME, IM-240XSME (Remote Air-cooled) ------------------------------------ 58 2. WIRING DIAGRAM ------------------------------------------------------------------------------- 59...
  • Page 4 [a] VALVE BODY --------------------------------------------------------------------------------- 82 [b] WHOLE VALVE ------------------------------------------------------------------------------- 82 8. WATER PAN ASSEMBLY ----------------------------------------------------------------------- 84 9. PUMP MOTOR ------------------------------------------------------------------------------------ 86 10. WATER VALVE ----------------------------------------------------------------------------------- 87 11. ACTUATOR MOTOR ----------------------------------------------------------------------------- 88 12. CAM ARM ------------------------------------------------------------------------------------------ 89 [a] CAM ARM (A) - ACTUATOR MOTOR SIDE -------------------------------------------- 89 [b] CAM ARM (B) - REAR SIDE --------------------------------------------------------------- 89 13.
  • Page 5 I. SPECIFICATIONS 1. DIMENSIONS/CONNECTIONS [a] IM-240DME (Air-cooled)
  • Page 6 [b] IM-240DWME (Water-cooled)
  • Page 7 [c] IM-240DSME (Remote Air-cooled)
  • Page 8 [d] IM-240XME (Air-cooled)
  • Page 9 [e] IM-240XWME (Water-cooled)
  • Page 10 [f] IM-240XSME (Remote Air-cooled)
  • Page 11 [g] IM-240AME (Air-cooled)
  • Page 12 [h] IM-240AWME (Water-cooled)
  • Page 13 2. CONDENSER UNIT URC-240C-E SPECIFICATIONS MODEL: URC-240C-E EXTERIOR Painted Galvanized Steel DIMENSIONS (W x D x H) 657 x 399 x 426 mm REFRIGERANT CHARGE R404A 1000 g WEIGHT Net 20 kg CONDENSER Air-cooled HEAD PRESSURE CONTROL Condensing Pressure Regulator AMBIENT CONDITION Min.
  • Page 14 II. GENERAL INFORMATION 1. CONSTRUCTION [a] IM-240DME, IM-240XME Louver, Air Filter Top Panel Power Cord Condensing Unit Front Panel Bin Door Handle Storage Bin (Optional) Adjustable Legs Water Valve Evaporator Actuator Toggle Switch Bin Control Switch Air-cooled Condenser Water Plate...
  • Page 15 [b] IM-240DWME, IM-240XWME Top Panel Power Cord Condensing Unit Front Panel Bin Door Handle Storage Bin (Optional) Adjustable Legs Water Valve Actuator Toggle Switch Evaporator Bin Control Switch Water Plate Water Tank Compressor Water-cooled Condenser Pump Motor Water Regulating Valve Drain Pan Hot Gas Valve Actuator Motor...
  • Page 16 [c] IM-240DSME, IM-240XSME Top Panel Remote Condenser Unit Power Cord Condensing Unit Front Panel Bin Door Handle Storage Bin (Optional) Adjustable Legs Water Valve Evaporator Actuator Toggle Switch Bin Control Switch Water Plate Water Tank Access Valve Compressor Pump Motor Hot Gas Valve Drain Pan Actuator Motor...
  • Page 17 [d] IM-240AME Top Panel Front Panel Bin Door Handle Storage Bin (Optional) Adjustable Legs Power Cord Compressor Hot Gas Valve Fan Motor Water Valve (Backside) Condenser Evaporator Water Plate Water Tank Actuator Toggle Switch Pump Motor Actuator Motor Bin Control Switch Drain Pan...
  • Page 18 [e] IM-240AWME Top Panel Front Panel Bin Door Handle Storage Bin (Optional) Adjustable Legs Power Cord Water Regulating Valve Compressor Control Box Water Valve Water-cooled Condenser (Backside) Evaporator Water Plate Water Tank Actuator Toggle Switch Pump Motor Actuator Motor Bin Control Switch Drain Pan...
  • Page 19 2. CONTROLLER BOARD Note: Refer to the “Hoshizaki IM Cuber Controller Board Service Manual” (E1AX-676) for the new Controller Board used for the later models (from Auxiliary Code “E-1”). IMPORTANT If receiving a service call, ask the user to turn off the power to the icemaker and turn it on again, while watching the icemaker.
  • Page 20 [a] CONTROLLER BOARD LAYOUT Thermistor (Cube Control) Backup Timer VR3 Connector K4 Cube Control VR5 Defrost Control VR2 Reset Switch Water Supply Time Setting Jumper Wires Signal Ground Connector K2 Connector K1 ID Number Connector K3...
  • Page 21 See the diagram on the right for layout of the Controller Board. Variable Resistor No. 2 through No. 5 adjustable Connector Integrated Circuit Chip LED: Light Emitting Diode Indicator Lamp Transformer Relay RESET: Reset Switch To check the operation of the board, push the Reset Button only during the freeze cycle.
  • Page 22 [b] BEFORE CHECKING CONTROLLER BOARD Check the power source voltage and the components as shown in the table below. Component Procedure Normal 1. Actuator Toggle Manually set the switch in the FREEZE DEFROST Switch and DEFROST positions, and check the COM-NO Open continuity.
  • Page 23 [c] SEQUENCE - LED INDICATORS ON/OFF PATTERN...
  • Page 24 If on the first cycle, check out the Cam operation and/or Toggle Switch. If the machine has been in service for some time, the Controller Board may be at fault. REMEMBER: Hoshizaki controllers are very reliable. They also control every component’s operation. So if a component malfunctions, the controller will respond.
  • Page 25 INTERLOCK WATER TANK PATTERN POSSIBLE CAUSE REMEDY INDICATOR POSITION Clean or replace Clogged Air Filter and/or Condenser Replace Water leak from Water Freeze Cycle Solenoid Valve Leak Replace Gas leak from Hot Gas Solenoid Valve Gas Leak Replace Fan Motor stopped Check for leak Gas leak Replace Comp.
  • Page 26 [e] CONTROLS AND ADJUSTMENT 1) Cube Control (VR5) A cube control on the Controller Board is factory adjusted to produce constant cubes all year around. When the user needs ice cubes with smaller or larger diameter holes, adjust the Variable Resistor VR5 (Cube Control) using a miniature flat blade screwdriver.
  • Page 27 3) Defrost Control (VR2) The defrost control regulates the time period between ice-drop and actuator motor restart. Any adjustment will not be required for normal operation. Factory setting is shown in the table below. When servicing or replacing the controller board, adjust the Variable Resistor VR2 using a miniature flat blade screwdriver.
  • Page 28 3. FAN MOTOR CONTROL - DME/XME ONLY The Condenser Fan Motor rotates at two speeds. The Motor is operated by Relay X6 which is in turn controlled by the Bimetal Thermostat which is attached to the Control Box. When the Relay is energised (Thermostat contacts closed), the Motor operates at approximately half speed.
  • Page 29 (Air-cooled Model) Bin Door Handle Storage Bin (Optional) Adjustable Legs Fig. 1 Note: This icemaker needs a Storage Bin. Hoshizaki recommends the following Ice Storage Bins: P-200SD --------- IM-240D F650-44 ---------- IM-240D/IM-480D F950-48 ---------- IM-480D/IM-720D F1025-52 --------- IM-480D/IM-720D B-300 -------------- IM-240A...
  • Page 30 1) After removing the packaging, make sure that the icemaker and the Storage Bin are in good condition. If in doubt, please do not use the equipment. See the instruction sheet attached to the Storage Bin for its unpacking and installation guidelines. 2) Remove the icemaker panels to gain access to the accessory kit and to assist easier installation.
  • Page 31 2. LOCATION WARNING 1. This icemaker is not intended for outdoor use. Normal operating ambient temperature should be within 1°C to 40°C. Normal operating water temperature should be within 5°C to 35°C. Operation of the icemaker, for extended periods, outside of these normal temperature ranges may affect production capacity.
  • Page 32 3. INSTALLATION * Incorrect installation can cause harm to people, animals or things, for which the manufacturer cannot be held responsible. Bottom [a] IM-240D, IM-240X Adjustable Leg 1) Lay the Storage Bin on its rear side carefully to prevent damage. Secure the four adjustable Fig.
  • Page 33 Bottom Plate [b] IM-240A 1) Fully screw in the four legs provided (bin accessory) into the Storage Bin underside. See Fig. 6. 2) Position the Storage Bin in the selected Adjustable Legs permanent site. Fig. 6 3) Place the icemaker on top of the Storage Bin by holding the bottom.
  • Page 34 4. STACKING ICEMAKERS - IM-240D, IM-240X ONLY WARNING Check the icemaker models. A D-type icemaker and an X-type icemaker will be required for stacking two icemakers. A D-type icemaker and two X-type icemakers will be required when stacking three icemakers. The D-type icemaker is designed for the upper unit, and the X-type for the middle and lower units.
  • Page 35 Upper Unit 9) [F-series] Locate the extension drain tube kit. Remove Leads Screw the Locking Nut from the threaded section, and push the threaded pipe through the hole in the side of the Bin. Align the Drain Pan, and insert the Drain Pipe Collar and Packing into the free Disconnect end of tube kit and tighten.
  • Page 36 5. ELECTRICAL CONNECTIONS WARNING THIS APPLIANCE MUST BE EARTHED This icemaker requires an earth that meets the national and local electrical code requirements. To prevent possible severe electrical shock injury to individuals or extensive damage to equipment, install a proper earth wire to this icemaker. Remove the plug from the mains socket before any maintenance, repairs or cleaning is undertaken.
  • Page 37 The correct replacement for the detachable fuse cover is identifiable from the manufacturer’s reference number stamped on the plug. Supply of replacement fuse covers can be obtained from Hoshizaki Parts/Service Centres. Fuses should be rated at 13A and approved to BS 1362.
  • Page 38 * When the Condenser Unit is installed on a roof, a 50 cm height base is recommended to prevent heat reflection and to avoid the possibility of the unit standing in water. * The maximum line length is 10 m. For information on longer line installations, call Hoshizaki Care +44 (0) 1223242254.
  • Page 39 Note: The tube ends to be flared should be free from damage, cracks and burrs and also Tighten clear of grease or scraps. Loosen 4) Connect the flared copper tubes on to the icemaker and Condenser Unit. The two tubes have the same diameter so mark them for a distinction between the gas line and the liquid Copper Tube...
  • Page 40 Cap Nut 6) Remove the Cap Nuts from the Access Valves on both the Condenser and the icemaker. Hexagon Open the liquid and gas line valves by turning Wrench (H4) the Spindle with a hexagon wrench until fully Open open. Spindle Close 7) Refit the Cap Nuts to a torque of 25±3 Nm.
  • Page 41 [d] ELECTRICAL CONNECTIONS WARNING THIS APPLIANCE MUST BE EARTHED This remote Condenser Unit requires an earth that meets the national and local electrical code requirements. To prevent possible severe electrical shock to individuals or extensive damage to equipment, install a proper earth wire to the icemaker and ensure continuity to the Condenser.
  • Page 42 [e] STACKING CONDENSER UNITS 1) Secure the lower Condenser Unit. Top Panel 2) Remove the Top Panel of the lower Condenser Unit. Upper Condenser Unit Keep the four screws for the Top Panel. Screw 3) Attach the upper Condenser Unit on top of the lower. 4) Secure the upper Condenser Unit with the four screws for the Top Panel.
  • Page 43 [Air-Cooled and Remote Air-Cooled Models] 1) Attach the angled end of white flexible inlet hose (accessory) to the G3/4 fitting on the left side of the icemaker as indicated, ensuring rubber sealing washer is correctly positioned. Hand tighten sufficiently to provide leak free joint (Fig. 28). 2) Attach the other end of inlet hose to the water tap (Fig.
  • Page 44 [Water-Cooled Model] * Hoshizaki recommends that the water-cooled Condenser should be connected to a closed circuit recirculating type cooling system utilizing a tower, water chiller or similar (see Fig. 30 and 31). Water make up should be via a ball valve/break tank arrangement.
  • Page 45 the joint. This pipe can be cut to length as necessary to suit position of main drain. 4) By means of a suitable spanner or wrench, tighten the 1/2-3/4 nipples (accessory) into the Rc1/2 fittings on the left side of the icemaker as indicated. P.T.F.E. tape and/or a suitable sealing compound should be used to obtain a leak free joint.
  • Page 46 Flow Control Valve Icemaker Cooling Tower Strainer Pump Fig. 31 [b] Connections according to regulations other than WRC by utilising accessory hoses (Fig. 32) 1) Follow the instructions from 1) to 4) in [a] above. 2) For Condenser connections, use supplied accessory hoses and make the same connections as 1) to 3) in [a] above to the free end of 1/2-3/4 nipples as indicated (Fig.
  • Page 47 8. FINAL CHECK LIST 1) Is the icemaker level? 2) Is the icemaker in a site where ambient temperatures are a minimum of 1°C and maximum 40°C all year around? 3) Is there at least 15 cm clearance around the icemaker for easy maintenance and service? 4) Have all shipping carton, tape(s) and packing been removed from the icemaker? 5) Have all electrical and piping connections been made? 6) Has the power supply voltage been tested or checked against the nameplate rating?
  • Page 48 IV. OPERATING INSTRUCTIONS WARNING 1. This icemaker is designed to produce and store edible ice. To keep the icemaker hygienic: * Wash your hands before removing ice. Use the Plastic Scoop provided (accessory). * The Storage Bin is for ice use only. Do not store anything else in the Bin. * Clean the Storage Bin before use (see “V.
  • Page 49 [Remote Air-cooled Model] Before starting the unit, energise the Oil Heater around the lower part of the Compressor to prevent a starting failure caused by the refrigerant staying inside the Compressor: 1) Move the Washing Switch on the Control Box to the “WASH” position. Washing Switch Control Box...
  • Page 50 2. PREPARING THE ICEMAKER FOR LONG STORAGE WARNING Drain the icemaker to prevent damage to the water supply line at subfreezing temperatures, using air or carbon dioxide. Shut off the icemaker until proper air temperature is resumed. [Normal Position] 1) Close the water supply tap, and remove the Inlet Hose.
  • Page 51 3. BIN CONTROL Bin Control Switch is mounted on the upper side of the Storage Bin. This switch will turn off the unit automatically when the Storage Bin is full of ice. Handle the Bin Control Switch carefully, because the switch assembly is fragile. Especially on removing ice, do not touch or Running Bin full...
  • Page 52 [b] REMOVAL BRACKET COVER Push the two Pawls and remove the Bracket Cover. SWITCH Pull out the Switch, holding the Rubber Leads Cap. Handle with care. SWITCH ACTUATOR Insert a flat blade screwdriver and wrench it slightly to pull out the Switch Actuator. Handle with care to prevent damage to the cam surface of the Actuator.
  • Page 53 [3] Storage Bin Interior Cleaning/Sanitisation (Weekly) 1) Open the Storage Bin Door, and remove all ice. Note: Hoshizaki recommends various types of Storage Bin for the icemaker which vary in size and design. The following instructions are therefore for general guidance only.
  • Page 54 5) Rinse thoroughly with fresh water and a clean cloth to wipe off the solution. Close the Bin Door. Note: Some solutions may cause damage to the Bin liner surfaces or corrosion on the metal parts. Always rinse the sanitiser unless directed otherwise by Hoshizaki guidelines. [4] Air Filter (Air-Cooled Model Only) Plastic mesh Air Filters are fitted to remove dirt or dust from the air, preventing the Condenser from getting clogged.
  • Page 55 2. WATER VALVE 1) Unplug the icemaker or disconnect the power source. 2) Close the water supply tap. 3) Remove the Top Panel and Front Panel. 4) Disconnect the Inlet Hose from the Water Valve. 5) Remove the Mesh Filter from the Water Valve. 6) Clean the Mesh using a brush.
  • Page 56 3. WATER-COOLED CONDENSER Deposits inside the water circuit of the Water-cooled Condenser decrease cooling performance. Clean inside of the Condenser by circulating a cleaning solution. 1) Prepare the following: Cleaning solution [Read and follow any instructions on label or bottle.] Pump Container for solution Hose...
  • Page 57 2. Always wear rubber gloves, eye protectors, apron, etc. for safe handling of the cleaner and sanitizer. 3. Use the cleaners and sanitizers recommended by Hoshizaki. Contact your local Hoshizaki office for further details. (The instructions below give an example of those recommended cleaners and sanitizers.) 4.
  • Page 58 14) Use a suitable container to dilute 44 ml of 5.25% sodium hypochlorite solution with 11.4 lit. of water. * Alternatively use the Hoshizaki recommended sanitizer as directed by the relevant instructions. 15) Repeat the above steps 5), 6) and 7), and close the water supply tap.
  • Page 59 16) As soon as the Water Pan closes, pour the sanitizing solution prepared in 14) carefully into the Water Pan. Do not splash or spill the solution onto the other parts. 17) Circulate the solution for 15 minutes. Open the water supply tap, and repeat the above steps 6) and 7).
  • Page 60 VI. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT [a] IM-240DME, IM-240XME, IM-240AME (Air-cooled) Water Valve Expansion Valve Evaporator Thermistor Controller Board Expansion Valve Bulb Water Pan Water Pump Drier Condenser Pressure Switch Hot Gas Fan Motor Valve Strainer Compressor...
  • Page 61 [b] IM-240DWME, IM-240XWME, IM-240AWME (Water-cooled) Water Valve Expansion Valve Evaporator Thermistor Controller Board Expansion Valve Bulb Water Pan Water Pump Drier Pressure Water Regulating Valve Switch Condenser Hot Gas Valve Strainer Compressor Water Circuit Refrigerant Circuit...
  • Page 62 [c] IM-240DSME, IM-240XSME (Remote Air-cooled) Water Expansion Valve Valve Pressure Bulb Switch Drier Thermistor Receiver Water Pan Tank Water Pump Insulation Controller Access Board Valve Connecting Pipe Hot Gas Valve Insulation Strainer Connecting Pipe Con- denser Compressor Condenser Unit Access Valve Water Circuit Refrigerant Circuit...
  • Page 63 2. WIRING DIAGRAM [a] IM-240DME, IM-240XME...
  • Page 64 [b] IM-240DWME, IM-240XWME...
  • Page 65 [c] IM-240DSME, IM-240XSME...
  • Page 66 [d] IM-240AME, IM-240AWME...
  • Page 67 (Ice Production = Capacity when shipped from factory) (*Values for icemaking water only. Use a cooling tower for cooling water.) Ambient Temp. (°C) Model Water Temp. (°C) IM-240DME Ice Production (kg/d) IM-240XME Freeze Cycle Time (min) 19.5 Defrost Cycle Time (min) Water Consumption (lit/h) 48.8...
  • Page 68 (*Values for icemaking water only. Use a cooling tower for cooling water.) Ambient Temp. (°C) Model Water Temp. (°C) IM-240DWME* Ice Production (kg/d) IM-240XWME* Freeze Cycle Time (min) 18.5 19.5 Defrost Cycle Time (min) Water Consumption (lit/h) 33.5 29.3 16.8 Electric Consumption (W) 1250 1260...
  • Page 69 Suction Pressure and Evaporator Temp. 50/60Hz Ambient Temp. (°C) MODEL Water Temp. (°C) Suction Pressure IM-240 “M” type Peak (bar) (R404A) Evaporator Inlet Temp. (°C) Note: The above data are only for reference in servicing. Actual readings may be slightly different for each product. Suction Pressure = Peak readings in freezing cycle Evaporator Inlet Temp.
  • Page 70 VII. SERVICE DIAGNOSIS 1. NO ICE PRODUCTION PROBLEM CHECK POSSIBLE CAUSE REMEDY [1] The icemaker a) Power Source 1. OFF position. 1. Move to ON position. will not start. 2. Loose connections. 2. Tighten. 3. Bad contacts. 3. Check for continuity and replace.
  • Page 71 PROBLEM CHECK POSSIBLE CAUSE REMEDY [2] (Continued) c) Overload 1. Bad contacts. 1. Check for continuity and Protector replace. 2. Voltage too low. 2. Check for recommended voltage. 3. Refrigerant overcharged 3. Recharge. or undercharged. d) Starter 1. Defective. 1. Replace. e) Start Capacitor 1.
  • Page 72 PROBLEM CHECK POSSIBLE CAUSE REMEDY [6] (Continued) 4. Defective or bound 4. Replace and clean. impeller. 5. Mechanical Seal worn 5. Check and replace. out. e) Controller Board 1. Defective. 1. See “II. 2. CONTROLLER BOARD”. f) Actuator Toggle 1. Defective. 1.
  • Page 73 2. LOW ICE PRODUCTION PROBLEM CHECK POSSIBLE CAUSE REMEDY [1] Freeze cycle a) Water Supply to 1. Low pressure. 1. Check for recommended time is too Condenser pressure. long. (water-cooled) b) Ambient or 1. Too high. 1. Check for recommended Water temperatures.
  • Page 74 3. ABNORMAL ICE PROBLEM CHECK POSSIBLE CAUSE REMEDY [1] Large-hole a) Water Supply 1. Low pressure. 1. Check for recommended cubes. Line pressure. b) Ambient or 1. Too high. 1. Check for recommended Water temperatures. Temperature c) Air Filter, 1. Clogged. 1.
  • Page 75 4. OTHERS PROBLEM CHECK POSSIBLE CAUSE REMEDY [1] Icemaker will a) Bin Control 1. Out of position. 1. Place in position. not stop when Switch 2. Bad contacts. 2. Check for continuity and Bin is filled with replace. ice. b) Controller Board 1. See “II. 2. CONTROLLER BOARD”. [2] Abnormal a) Pump Motor 1.
  • Page 76 VIII. ADJUSTMENT 1. EXPANSION VALVE The Expansion Valve is factory-adjusted. Do not adjust it except at replacement or service. Adjust the valve setting, if necessary, as follows: 1) Remove the Cap Nut. 2) Rotate the Adjust Screw. 3) Watch holes of ice cubes produced. Standard setting is that Evaporator inlet side and outlet side cubes have almost the same diameters.
  • Page 77 2. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY The Water Regulating Valve is factory-adjusted. Do not adjust it except at replacement or service. Adjust the valve setting, if necessary, as follows: 1) Attach a pressure gauge to high-side line, or prepare a thermometer to check Condenser drain temperature.
  • Page 78 IX. REMOVAL AND REPLACEMENT 1. SERVICE FOR REFRIGERANT LINES [a] SERVICE INFORMATION 1) Allowable Compressor Opening Time and Prevention of Lubricant Mixture [R404A] 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 79 7) Evacuation, Vacuum Pump and Refrigerant Charge [R404A] 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 R404A.
  • Page 80 Important Note: The DSME/XSME Nameplate will only state a base refrigerant charge for up to 10 m of remote tubing (distance between Condenser and icemaker). When this distance exceeds 10 m, refer to “III. 6. [c] INSTALLATION” for refrigerant charge calculation. 6) Open the High-side Valve on the Gauge Manifold, and accurately measure in the liquid charge.
  • Page 81 16) Connect the Solderless Terminals and replace the Terminal Cover in its correct position. 17) Replace the panels in their correct positions. 18) Plug in the icemaker or connect the power source. Note: Hoshizaki recommends that Compressor starting electrics are always replaced at the same time as the Compressor.
  • Page 82 3. DRIER 1) Unplug the icemaker or disconnect the power source. 2) Remove the Top, Front and Right Side Panels. 3) Recover the refrigerant and store it in a proper container, if required by an applicable law (See “1. [b] REFRIGERANT RECOVERY”). 4) Remove the Drier Holder, if any, and pull the Drier toward you for easy service.
  • Page 83 4. EXPANSION VALVE 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) Unplug the icemaker or disconnect the power source. 2) Remove the Top, Front and Right Side Panels.
  • Page 84 5. EVAPORATOR 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) Unplug the icemaker or disconnect the power source. 2) Remove the Top, Front, Right and Left Side Panels.
  • Page 85 6. HOT GAS VALVE 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) Unplug the icemaker or disconnect the power source. 2) Remove the Top, Front and Right Side Panels.
  • Page 86 7. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY [a] VALVE BODY 1) Unplug the icemaker or disconnect the power source. 2) Close the water supply tap. 3) Remove the Front Panel and Right Side Panel. 4) Disconnect the flare connections of the Water Regulating Valve. 5) Remove the valve from the Bracket.
  • Page 87 6) Cut off the Capillary Tubes of the Valve and High-pressure Switch, using a file and pliers. Be careful not to damage the Capillary Tube end. 7) Disconnect the flare connections from the Bracket. 8) Remove the screws and the valve from the Bracket. 9) Install the new valve, and insert the Capillary Tubes into the Copper Tube.
  • Page 88 8. WATER PAN ASSEMBLY 1) Remove the Top, Front and Left Side Panels. 2) Push the Reset Switch on the Control Box to open the Water Pan. 3) Unplug the icemaker or disconnect the power source. 4) Disconnect the Pump Motor leads in the Wiring Channel. 5) Remove the two Extension Springs from the Cam Arms.
  • Page 89 INDEX NO. DESCRIPTION Water Tank Water Plate Bracket Bracket Spring Hook Screw Pump Tubing (Suction) Pump Tubing (Discharge) Pump Motor Bracket Water Plate Overflow Pipe Thumbscrew (for Overflow Pipe) Nylon Tie O-ring Pump Motor Assembly S1 - 4 Tapping Screw Machine Screw Fig.
  • Page 90 9. PUMP MOTOR 1) Unplug the icemaker or disconnect the power source. 2) Remove the Top Panel and Front Panel. 3) Disconnect the Pump Motor leads in the Wiring Channel. 4) Remove screws and the Pump Motor from the Bracket. 5) Disconnect the Pump Suction and Discharge Tubings.
  • Page 91 10. WATER VALVE 1) Close the water supply tap. 2) Unplug the icemaker or disconnect the power source. 3) Remove the Top Panel and Front Panel. 4) Disconnect the Receptacle (leads) from the Water Valve. 5) Remove the Valve Outlet tubing by releasing the Clamp. 6) Remove the Inlet Hose and Water Valve.
  • Page 92 11. ACTUATOR MOTOR 1) Remove the Top Panel and Front Panel. 2) Push the Reset Switch on the Control Box to open the Water Pan. 3) Unplug the icemaker or disconnect the power source. 4) Remove the Extension Spring (Actuator Motor side) from the Cam Arm. 5) Disconnect the Actuator Motor leads in the Wiring Channel.
  • Page 93 12. CAM ARM [a] CAM ARM (A) - ACTUATOR MOTOR SIDE Refer to “11. ACTUATOR MOTOR.” [b] CAM ARM (B) - REAR SIDE 1) Remove the Top Panel and Front Panel. 2) Push the Reset Switch on the Control Box to open the Water Pan. 3) Unplug the icemaker or disconnect the power source.
  • Page 94 13. ACTUATOR TOGGLE SWITCH 1) Unplug the icemaker or disconnect the power source. 2) Remove the Top Panel and Front Panel. 3) Remove the Hex Nut holding the Actuator Toggle Switch. 4) Cut off the Nylon Tie holding the Vinyl Cover Bag. 5) Disconnect the Receptacle of the leads.
  • Page 95 Fig. 54...
  • Page 96 ICEMAKING ASSEMBLY AND CAM MECHANISM INDEX NO. DESCRIPTION Water Pan Assembly Evaporator Bolt Collar (Spacer) Bearing Actuator Motor Actuator Toggle Switch Shaft Switch Cover Actuator Motor Bracket Cam Shaft Bearing Spring Pin Cam Arm (B) Cam Shaft Snap Pin Split Pin Spring Washer (A) Washer (B)
  • Page 97 14. CONTROLLER BOARD IMPORTANT A single type Controller Board is supplied as a Service Board. Some modifications and adjustment will be required to fit the icemaker models. Do not repair any parts and electronic devices on the Controller Board in the field. Replace the whole board with a new Service Board.
  • Page 98 Pawl Nylon Tie (Do not cut off) Control Box Cover Bushing Base Signal Ground Wire Shield Plate Controller Board Fig. 55...
  • Page 99 15. THERMISTOR FOR CUBE CONTROL 1) Unplug the icemaker or disconnect the power source. 2) Remove the Top and Front Panels. 3) Remove the Connector K4 on the Controller Board, referring to “14. [b] REPLACEMENT.” 4) Unscrew and remove the Thermistor Holder and Thermistor, located on the Evaporator (Front Side).
  • Page 100 16. SURGE ABSORBER 1) Turn off the Control Switch or disconnect the power source. 2) Remove the Front Cover. 3) Remove two screws at the front bottom of the Control Box, and remove the Control Box Cover. 4) Remove the Quick Disconnect Terminal from the Surge Absorber. 5) Remove the screw securing the Surge Absorber.
  • Page 101 17. FAN MOTOR - DME/XME/AME ONLY 1) Unplug the icemaker or disconnect the power source. 2) Remove the Top, Front and Right Side Panels. 3) Disconnect the Connector of the Fan Motor. 4) Remove the Fan Motor Bracket and the Fan Motor. 5) Cut the leads of the Fan Motor allowing enough lead length to reconnect using closed end connectors.
  • Page 102 HOSHIZAKI EUROPE LTD. UNIT A, STAFFORD PARK 18, TELFORD, SHROPSHIRE TF3 3DJ ENGLAND PHONE: 01952-291777...

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