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TEMPERATURE SENSORS AND FAN MOTOR REPLACEMENT
Before making any change, technician should:
1. Disconnect power to the cabinet
2. Remove screws from venturi and pull down
To change a temperature sensor (cabinet zone sensor or defrost termination sensor), simply disconnect the sensor
wires from the controller and replace the new sensor in the original position. Use plastic tie to tighten the zone sensor.
Insert the sensor for defrost termination firmly into the evaporator coil, in between the fins. Make sure the sensor wires
do not touch or are not close to any heater rods
To change fan motor – disconnect fan motor leads – remove screws from fan guards and motor mounts.
FINAL CHECK LIST
A.
Check operating pressures.
B.
Check electrical requirements of unit to supply voltage.
C.
Set temperature control for desired temperature range.
D.
Check sight glass for proper refrigerant charge if provided
E.
Check condensing unit for vibrating or rubbing tubing. Dampen and clamp as required.
