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Hoshizaki RM-49, Service Manual

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Hoshizaki RM-49 Service Manual Download Page 18

DISCONNECT UNIT FROM POWER  SUPPLY BEFORE DOING ANY SERVICE

Instructions to replace Ambient Sensor.

5.  Unscrew the four screws that hold in 

place the fan guard  on the air baffle 

using a Phillips screwdriver # 2.

Fan Guard

6.  Remove the bolt that hold in place 

the fan blade to the fan motor 

using a  9/32” socket  screwdriver.

7.   Pull out  the ambient sensor from its 

plastic clip support.

Summary of Contents for RM-49

Page 1: ...SERVICE MANUAL FOR MODEL RM 49...

Page 2: ...REQUIRED TOOLS CORDLESS DRILL DRIVE SCREWDRIVER SET WITH SOCKET OF 9 32 PIERCING VALVE OPEN WRENCH OF 1 2 CUTTING TUBING VISE GRIP WATCHER SLOTTED SCREWDRIVER RATCHET WITH SOCKET OF 7 16...

Page 3: ...REQUIRED EQUIPMENT OXIACETILENE EQUIPMENT DRY NITROGEN EQUIPMENT VACUUM PUMP WITH MICRON GAUGE MANIFOLD PRESSURE GAUGES LEAK DETECTOR REFRIGERANT RECOVERY MACHINE...

Page 4: ...lights Instructions to replace condenser fan motor Instructions to replace evaporator fan motor Instructions to replace electronic thermostat Instructions to replace thermostat ambient sensor Instruct...

Page 5: ...DOING ANY SERVICE Instructions to Replace LED Power Supply 1 Unscrew the two screws that hold in place the top of the header sign using a Phillips screwdriver 2 2 Pull out the top of the header sign...

Page 6: ...uctions to Replace LED Power Supply 4 In order to remove the Power Supply unscrew the two screws that hold it in place using a Phillips screwdriver 2 5 Disconnect the Power Supply s electrical connect...

Page 7: ...Y SERVICE Instructions to Replace High Intensity LED Flexible Strips 1 Unscrew the two screws that hold in place the top of the header sign using a Phillips screwdriver 2 2 pull out the top of the hea...

Page 8: ...lexible Strips 4 Disconnect the electrical connector of LED strip Light 5 Remove the high intensity LED flexible strip by pulling it out from its base Repeat this step to remove the other high intensi...

Page 9: ...lace LED Strips 1 Remove the LED profile cover of breaker strip using a slotted screwdriver LED cover profile 2 Disconnect the electrical connector of LED strip Light 3 Use a slotted screwdriver to pu...

Page 10: ...or 1 Unscrew the four screws that hold in place the front grill using a Phillips screwdriver 2 2 Pull out the front grill 3 Disconnect the Tyco electrical connector of condensing unit 4 Remove the two...

Page 11: ...e condensing unit from the base of the cabinet 7 The condensing unit can be removed all the way out for easier service 5 Remove the two screws that holds in place the evaporation pan bracket to the ca...

Page 12: ...RVICE Instructions to Replace Condenser Fan Motor 8 Disconnect the Tyco electrical connector of the condenser fan motor 9 Unscrew the two screws that hold in place the base motor to the rails using a...

Page 13: ...r Fan Motor 11 Remove the bolt that hold in place the fan blade to the fan motor using a 9 32 socket screwdriver 12 Unscrew the two screws that hold in place the base motor to the fan motor using a 9...

Page 14: ...our screws that hold in place the fan guard on the air baffle using a Phillips screwdriver 2 Fan Guard 2 Remove the bolt that hold in place the fan blade to the fan motor using a 9 32 socket screwdriv...

Page 15: ...Motor 4 Disconnect the Tyco electrical connector of the evaporator fan motor located in the top of cabinet 5 Unscrew the three screws that hold in place the support base motor to the fan motor chassis...

Page 16: ...rame of the thermostat using your fingers 2 Turn 90 both screws to loosen their cams and the front panel will detach Then proceed to remove the thermostat from the panel by keeping it horizontally 3 D...

Page 17: ...screws to loosen their cams and the front panel will detach Then proceed to remove the thermostat from the panel by keeping it horizontally 3 Disconnect the connector of the ambient sensor located on...

Page 18: ...nt Sensor 5 Unscrew the four screws that hold in place the fan guard on the air baffle using a Phillips screwdriver 2 Fan Guard 6 Remove the bolt that hold in place the fan blade to the fan motor usin...

Page 19: ...ambient sensor with the new This operation will serve as guide to remove the damage sensor and connect the new to the connector of thermostat 9 Pull both ambient sensors through the cut out of display...

Page 20: ...l using a Phillips screwdriver 2 Instruction to Replace Starting Relay Overload Protector and Starting Capacitor 2 Pull out the front grill 3 Disconnect the Tyco electrical connector of condensing uni...

Page 21: ...acitor 5 Remove the two screws that holds in place the evaporation pan bracket to the cabinet base using a 1 4 socket screwdriver Proceed to remove the evaporation pan from condensing unit compartment...

Page 22: ...OING ANY SERVICE Instruction to Replace Starting Relay Overload Protector and Starting Capacitor 8 Remove the two bolts that hold in place the electrical box cover using a socket screwdriver 9 Remove...

Page 23: ...DOING ANY SERVICE Instruction to Replace Starting Relay Overload Protector and Starting Capacitor LOCATION OF ELECTRICAL CONNECTIONS Starting capacitor wires connections Ground wire Overload protector...

Page 24: ...Relay Overload Protector and Starting Capacitor 10 Remove the screws that hold in place the relay to the electrical box using a screwdriver 2 11 Use a slotted screwdriver as a pry bar to pull out the...

Page 25: ...ctrical box using a socket screwdriver 14 Insert a flat screwdriver in the slot of the plastic electrical box to remove it from the compressor Use the flat screwdriver as a pry bar to push the box dow...

Page 26: ...apacitor 17 Use a slotted screwdriver as a pry bar to remove the starting capacitor from its base The base of the capacitor is attached to the top of the electrical box 18 Use a slotted screwdriver as...

Page 27: ...Unscrew the four screws that hold in place the front grill using a Phillips screwdriver 2 2 Pull out the front grill 3 Disconnect the Tyco electrical connector of condensing unit 4 Remove the two bol...

Page 28: ...crews that holds in place the evaporation pan bracket to the cabinet base using a 1 4 socket screwdriver Proceed to remove the evaporation pan from the condensing unit compartment 6 Pull out the conde...

Page 29: ...POWER SUPPLY BEFORE DOING ANY SERVICE Instructions to Replace Compressor 8 Remove the two bolts that hold in place the electrical box cover using a socket screwdriver 9 Remove the electrical box cove...

Page 30: ...ervice tubing Use an Allen Key Wrench to close the piercing valve for piercing the tube and open it to release the refrigerant 11 Open Manifold Gauge Pressure valves and turn on the recovery machine t...

Page 31: ...pressor to the base rails using a 7 16 socket ratchet 15 Remove the compressor from the base rails 16 Not all compressor removal requires cleaning the low and high sides of the system However if you s...

Page 32: ...rge and suction tubing 20 Braze the filter to the condenser discharge line and to the capillary tubing Do not over heat the body of the filter and take great care not to block the capillary tubes with...

Page 33: ...on and charging process of the system Attach the hoses of the manifold gauge to the vacuum pumps 23 Turn on the vacuum pump to start evacuating the system This should take up to 20 minutes for the mic...

Page 34: ...name plate of R 134a refrigerant into the refrigeration system Wait until the pressure readings of the system have equalized and then turn on the cooler 25 Unplug the cooler Pinch the service tubes u...

Page 35: ...structions to Replace the Door 1 Unscrew the four screws that hold in place the front grill using a Phillips screwdriver 2 2 Pull out the front grill 3 Use a cordless drill drive with a Phillips bit 3...

Page 36: ...CONNECT UNIT FROM POWER SUPPLY BEFORE DOING ANY SERVICE Instructions for Replacing the Door 4 To remove the door pull it downward from the upper hinge 5 To install the new door reverse the previous st...

Page 37: ......

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