EVAPORATER AND CONDENSER-FAN MOTOR PROTECTION — Each Evaporator and Condenser-fan motor is
internally protected against over temperature.
HIGH- AND LOW-PRESSURE SWITCHES — If either switch trips, or if the compressor over temperature switch
activates, that refrigerant circuit will be automatically locked out by the CLO. To reset, manually move the thermostat
setting.
FREEZE PROTECTION THERMOSTAT (FPT) — An FPT is located on the top and bottom of the evaporator coil. It
detects frost build-up and turns off the compressor, allowing the coil to clear. Once the frost has melted, the
compressor can be reenergized.
4.9 – Control Circuit, 24-V
This control circuit is protected against over-current by a 3.2-amp circuit breaker. Breaker can be reset. If it trips,
determine cause of trouble before resetting.
5.0 – REPLACEMENT PARTS
A complete list of replacement parts may be obtained from any Carrier distributor.
NOTE
IMPORTANT
After prolonged shutdown or servicing in cold weather, energize the crankcase heaters for 12 hours before
starting the compressors.
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Summary of Contents for DesertMaster 50TJM
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