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Hoshizaki RM-26 Service Manual

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SERVICE MANUAL
FOR MODEL RM-26

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Summary of Contents for Hoshizaki RM-26

  • Page 1 SERVICE MANUAL FOR MODEL RM-26...
  • Page 2 REQUIRED TOOLS RATCHET WITH SOCKET OF OPEN WRENCH OF 1/2” CORDLESS DRILL DRIVE CUTTING TUBING 7/16” SCREWDRIVER SET WITH VISE GRIP WATCHER SLOTTED PIERCING VALVE SOCKET OF 9/32” SCREWDRIVER...
  • Page 3 REQUIRED EQUIPMENT OXIACETILENE DRY NITROGEN VACUUM PUMP WITH EQUIPMENT EQUIPMENT MICRON GAUGE MANIFOLD PRESSURE REFRIGERANT RECOVERY LEAK DETECTOR GAUGES MACHINE...

  • Page 4: Table Of Contents

    CONTENTS • Instructions to replace LED Power Supply. •Instructions to replace high intensity LED flexible strip. • 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 3. Grab the acrylic sign and pull it out. in place the top of the header sign , 2.
  • 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 6. To install the new Power Supply 5. Disconnect the electrical connector of hold it in place using a Phillips reverse the previous steps.

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

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace High Intensity LED Flexible Strips . 1. Unscrew the two screws that hold 3. Grab the acrylic sign and pull it out. in place the top of the header sign , 2.
  • Page 8 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace High Intensity LED Flexible Strips . 5. Remove the high intensity LED flexible 6. To install the new high intensity LED 4. Disconnect the electrical connector strip by pulling it out from its base. flexible strip, reverse the previous of LED strip Light.
  • 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 electrical 4. To install the new LED strip 3. Use a slotted screwdriver cover of breaker strip using connector of LED strip reverse the previous steps.

  • Page 10: Instructions To Replace Condenser Fan Motor

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Condenser Fan Motor 1. Unscrew the four screws that hold 3. Disconnect the Tyco electrical in place the front grill , using a 2. Pull out the front grill. connector of the condensing Phillips screwdriver # 2 unit.
  • Page 11 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Condenser Fan Motor 4. Remove the two bolts that hold 6. The condensing unit can be 5. Pull out the condensing unit from in place the rails using a 1/2” removed all the way out for the base of the cabinet.
  • Page 12 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Condenser Fan Motor 7. Disconnect the Tyco electrical 8. Unscrew the two screws that hold in 9. Remove the condenser fan by pulling connector of the condenser fan place the base motor to the rails using it out motor.
  • Page 13 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Condenser Fan Motor 11. Unscrew. the two screws that 10. Remove the bolt that hold in 12. To install the new condenser hold in place the base motor to place the fan blade to the fan fan motor reverse the previous the fan motor using a 9/32”...

  • Page 14: 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 the place the support base motor to the place the fan guard on the air baffle fan blade to the fan motor using a...
  • Page 15 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace the Evaporator Fan Motor. 5. Unscrew the three screws that hold in 4. Disconnect the Tyco electrical 6. To install the new evaporator fan place the support base motor to the fan connector of the evaporator fan motor reverse the previous steps.

  • Page 16: 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 the 4. To install the new front panel will detach . frame of the connectors located in electronic thermostat...

  • Page 17: Instructions To Replace Thermostat Ambient Sensor

    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 18 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to replace Ambient Sensor. 8. Pull both ambient sensors 7. Use masking tape to splice the through the cut out of 5. Unscrew the two screws that damaged ambient sensor with 6.

  • Page 19: 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. 1. Unscrew the four screws that hold 3. Disconnect the Tyco electrical in place the front grill , using a 2. Pull out the front grill. connector of condensing unit.
  • Page 20 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 rails using a 1/2” open wrench, these rails support the 5. Pull out the condensing unit from the base of the cabinet. condensing unit.
  • Page 21 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Relay, Overload Protector and Starting Capacitor. 8. At the same time that the plastic 7. Insert a flat screwdriver in the slot of electric box is being pushed 6.
  • Page 22 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Starting Relay, Overload Protector and Starting Capacitor. LOCATION OF ELECTRICAL CONNECTIONS Relay Ground wire . Starting capacitor wires Start Relay wire connections connections Overload protector Overload protector wires connection Starting Capacitor...
  • Page 23 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Starting Relay, Overload Protector and Starting Capacitor. 9. First disconnect the two black wires connecting the 10. To install the new relay / overload protector assembly starting capacitor and the blue color wire of the start reverse the previous steps.
  • Page 24 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instruction to Replace Starting Relay, Overload Protector and Starting Capacitor. 12. Use a slotted screwdriver as a pry bar to disconnect the 11. Use a slotted screwdriver as a pry bar to remove the terminals of the starting capacitor.

  • Page 25: Instructions To Replace Compressor

    DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor 1. Unscrew the four screws that hold 3. Disconnect the Tyco electrical in place the front grill , using a 2. Pull out the front grill. connector of condensing unit. Phillips screwdriver # 2...
  • Page 26 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor 6. The condensing unit can be 4. Remove the two bolts that hold in place 5. Pull out the condensing unit from removed all the way out for the rails using a 1/2”...
  • Page 27 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor 7. Insert a flat screwdriver in the slot of the plastic electrical box 8. At the same time that the plastic electric box is being to remove it from the compressor. Use the flat screwdriver as pushed downward with the slotted screwdriver, hold a pry bar to push the box downward.
  • Page 28 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor 10. Attach the hose of the recovery The first step is to recover all machine to the service tubing. Use 11. Open Manifold Gauge Pressure refrigerant from the system by an Allen Key Wrench to close the valves and turn on the recovery installing a piercing valve in the...
  • Page 29 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor 15. To remove the filter 14. Warm the brazing of 13. Use a knife to cut 12. Separate the 16. Remove the four dryer, slowly warm the discharge and the double sided discharge tubing clips, pins and...
  • Page 30 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor 20. Insert the four clips, 18. Not all compressor removal pins and washers in requires cleaning the low and 19. Place the new the base of the 17.
  • Page 31 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor 24. Braze the filter to the 23. Follow slides # 21 22. Place double sided tape condenser discharge line and to through # 24 to in the compressor the capillary tubing.
  • Page 32 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor – Vacuum & Charging the System. 25. Use the Piercing Valve already installed in the service tube of 26. Turn on the vacuum pump to start evacuating the system. This should take up to 20 minutes the compressor.
  • Page 33 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor – Vacuum & Charging the System. 28. Unplug the cooler. Pinch the service tubes using a vise 27. After the vacuum process has been finished, close the valves pinch and proceed to remove the manifold gauges and of the manifold gauges and proceed to connect the hose from the piercing valve.
  • Page 34 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions for Replacing the Door. 3. Use a cordless drill drive with a 1. Unscrew the four screws that Phillips bit # 3 to remove the three hold in place the front grill , using 2.
  • Page 35 DISCONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions for Replacing the Door. 4. To remove the door, pull it 5. To install the new door reverse the downward form the upper hinge. previous steps..