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Hoshizaki RM-45-SD Service Manual
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Hoshizaki RM-45-SD Service Manual

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SERVICE MANUAL
FOR MODEL RM-45-SD

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Summary of Contents for Hoshizaki RM-45-SD

  • Page 1 SERVICE MANUAL FOR MODEL RM-45-SD...
  • Page 2 REQUIRED TOOLS RATCHET WITH SOCKET OF OPEN WRENCH OF 1/2” CORDLESS DRILL CUTTING TUBING 7/16” SCREWDRIVER SET WITH VISE GRIP PRECISION FLAT BLADE SLOTTED PIERCING VALVE SOCKET OF 9/32” SCREWDRIVER...
  • Page 3 REQUIRED EQUIPMENT OXIACETILENE VACUUM PUMP WITH DRY NITROGEN TANK EQUIPMENT MICRON GAUGE MANIFOLD HIGH & LOW REFRIGERANT RECOVERY LEAK DETECTOR GAUGE PRESSURE KIT MACHINE...

  • Page 4: Table Of Contents

    CONTENTS • Instructions to replace LED Power Supply. •Instructions to replace high intensity LED flexible strips. • Instructions to replace interior LED strips lights. • Instructions to replace condenser fan motor. • Instructions to replace evaporator fan motor. • Instructions to replace electronic thermostat. •...

  • Page 5: Instructions To Replace Led Power Supply

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace LED Power Supply. 1. Unscrew the two screws that hold in place the top of the header sign , 2. Pull out the top of the header sign. 3.
  • Page 6 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace LED Power Supply. 4. In order to remove the Power Supply, unscrew the two screws that 5. Disconnect the Power Supply’s electrical 6. To install the new Power Supply hold it in place using a Phillips connector.

  • Page 7: Instructions To Replace High Intensity Led Flexible Strips

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace High Intensity LED Flexible Strips . 1. Using a Phillips screwdriver # 2 unscrew the two screws that hold in 2. Pull out the top of the header sign. 3.
  • Page 8 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace High Intensity LED Flexible Strips . 6. To install the 5. Remove the high intensity LED flexible strip by new high pulling it out from its base. Repeat this step to intensity LED 4.
  • Page 9 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace LED Strips . LED cover profile 1. Remove the LED profile 2. Disconnect the LED strip 3. Use a slotted 4. To install the new LED cover from the breaker Light’s the electrical screwdriver to pull out strip reverse the...

  • Page 10: Instructions To Replace Condenser Fan Motor

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Condenser Fan Motor 4. Remove the two bolts 1. Unscrew the four screws that hold in place the 3. Disconnect the Tyco that hold in place the condensing unit rails 2.
  • Page 11 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Condenser Fan Motor 8. Unscrew the two screws 7. Disconnect the Tyco 5. Pull out the condensing that hold in place the 6. The condensing unit can electrical connector of unit from the base of the base motor to the rails be removed all the way...
  • Page 12 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Condenser Fan Motor 11. Unscrew. the two 12. To install the new 10. Remove the bolt that hold screws that hold in condenser fan motor 9. Pull out the condenser in place the fan blade to place the base motor reverse the previous...

  • Page 13: Instructions To Replace Evaporator Fan Motor

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace the Evaporator Fan Motor. Fan Guard 3. Unscrew the four screws that hold in 1. Unscrew the four screws that hold in 2. Remove the bolt that hold in place place the support base motor to the place the fan guard on the air baffle the fan blade to the fan motor...
  • Page 14 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace the Evaporator Fan Motor. 4. Disconnect the Tyco electrical 5. Unscrew the three screws that hold in place 6. To install the new evaporator fan connector of the evaporator fan the support base motor to the fan motor motor reverse the previous steps.

  • Page 15: Instructions To Replace Electronic Thermostat

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace The Electronic Thermostat. 2. Turn 90° both screws to loosen their cams and the 1. Remove the front 3. Disconnect all the 4. To install the new front panel will detach . frame of the connectors located in electronic thermostat...
  • Page 16 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to replace Ambient Sensor. 2. Turn 90° both screws to 3. Disconnect the 4. Unscrew the two screws loosen their cams and the 1. Remove the front connector of the that hold the wires in front panel will detach .
  • Page 17 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to replace Ambient Sensor. 8. Pull both ambient 7. Use masking tape to splice sensors through the 5. Unscrew the two screws the damaged ambient cut out of display . that hold in place the light 6.

  • Page 18: Instructions To Replace Starting Relay, Overload Protector And Starting Capacitor

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Starting Relay, Overload Protector and Starting Capacitor. 4. Remove the two bolts that hold in place the 1. Unscrew the four screws 3. Disconnect the Tyco rails using a 1/2” open that hold in place the 2.
  • Page 19 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Starting Relay, Overload Protector and Starting Capacitor. 7. Remove the two bolts that 5 Pull out the condensing 6. The condensing unit can hold in place the electrical 8.
  • Page 20 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Starting Relay, Overload Protector and Starting Capacitor. LOCATION OF ELECTRICAL CONNECTIONS Relay Starting capacitor wires Start Relay wire connections connections Overload protector Ground wire . Overload protector wires connection Starting Capacitor...
  • Page 21 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Starting Relay, Overload Protector and Starting Capacitor. 10. Use a slotted screwdriver as a pry bar 9. Remove the screws that hold in place the to pull out the electrical connectors 11.
  • Page 22 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Starting Relay, Overload Protector and Starting Capacitor. 13. Insert a flat screwdriver in 14. To remove the overload 12. Remove the four bolts that the slot of the plastic protector use a slotted 15.
  • Page 23 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Starting Relay, Overload Protector and Starting Capacitor. 17. Use a slotted screwdriver as a pry bar to disconnect the 16. Use a slotted screwdriver as a pry bar to remove the terminals of the starting capacitor.

  • Page 24: Instructions To Replace Compressor

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor. 4. Remove the two bolts that hold in place the 1. Unscrew the four screws 3. Disconnect the Tyco rails using a 1/2” open that hold in place the 2.
  • Page 25 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor. 8. Please review the slides 7. Remove the two bolts that 19 through 23 to remove 5 Pull out the condensing 6. The condensing unit can hold in place the electrical the relay, overload unit from the base of the be removed all the way...
  • Page 26 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor. 12. To remove the filter 9 . The first step is to recover all refrigerant 11. Warm the brazing of 10. Open Manifold Gauge dryer, slowly warm from the system by installing a piercing the discharge and Pressure valves and...
  • Page 27 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor. 15. Not all compressor removal requires cleaning the low and 13. Remove the four nuts high sides of the system. 16. Place the new that hold in place the 14.
  • Page 28 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor. 19. Braze the filter to the condenser discharge line and to the capillary 20. Please review the 17. Install the four nuts tubing. slides 19 through 23 to that hold in place the 18.
  • Page 29 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor – Vacuum & Charging the System. 21. Use the Piercing Valve already 22. Turn on the vacuum pump to start evacuating the system. This should take up to 20 installed in the service tube of minutes for the micron gauge to reach 200 microns or less.
  • Page 30 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor – Vacuum & Charging the System. 24. Unplug the cooler. Pinch the service tubes using a vise 23. After the vacuum process has been finished, close the pinch and proceed to remove the manifold gauges and valves of the manifold gauges and proceed to connect the piercing valve.

  • Page 31: Instructions To Replace Sliding Doors

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Sliding Doors. 1. The aluminum track profile has two cut outs 2. To remove the front door, align the two door rollers with the aluminum track at each channel to allow the removal or profile cut outs.
  • Page 32 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Sliding Doors. Metal Roller RO-29 Nut NU-290-E Screw SC-46-SS...
  • Page 33 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Sliding Doors. 3. Remove the sliding door spring from the door roller bracket as 4. Unscrew the two screws that hold in place both door roller shown in the picture. brackets, using a Phillips screwdriver # 2...
  • Page 34 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions for Replacing Sliding Doors. 5-To reinstall the new sliding door repeat the previous steps Install the door and test the tension of the sliding door by opening it and letting it close by it self.