Climate Control Series
Quincy Compressor
2022209100, August 2018
34
Thermal overloads are designed to
protect the motor from damage due
to motor overload. If the thermal
overload trips persistently, DO NOT
CONTINUE TO PUSH THE RESET
BUTTON! Contact your local Quincy
distributor for assistance.
CAUTION !
Trouble
Probable Cause
Excessive current draw
•Low voltage
(must be within 10% of name plate voltage)
(To determine maximum
•Loose electrical connection
amper age allowed, multiply
•Wire size too small
the FLA on the motor
•Incorrect lubricant
nameplate by the service
•Discharge pressure too high
factor.)
•Intercooler plugging
CAUTION !
•Bearings tight or seizing
Motor surface temperature
•No crankshaft endplay
normally exceeds 170° F.
•Motor sized incorrectly
•Motor defective
•Drive belts too tight
Failure to start
•Power not on
•Blown circuit fuse
•Overload relay tripped
•Low voltage
•Faulty start switch
•Power failure
•Pressure switch incorrectly
adjusted or faulty
•Loose or broken wire
•Motor defective
•Compressor seized
Motor stalls
•Motor overloaded
(refer to
Excessive current draw
)