Quincy QGB Series Instruction Manual page 85

Integrated Dryer Troubleshooting
(continued):
Compressor starts and runs – short
cycles on overload:
l ,
ow voltage or Phase unBalance
a
dditional current going thru overload
o
verload Protectors defective
h
igh discharge Pressure
s .
hort in winding
Head pressure too high:
r
efrigerant overcharge
a .
ir in system
d .
irty condenser
l .
ocation too hot
d
efective condenser Pressure switch
d .
efective fan motor
f
an oPerating in wrong direction
Head pressure too low:
r .
efrigerant shortage
c
omPressor suction or discharge valves
.
inefficient
d
efective condenser fan cycling Pressure switch
d
efective water regulating valve
.
.
.
.
.
.
.
.
Quincy Compressor-QGB
Section VIII - Troubleshooting
c
heck voltage to Be within
.
listed on name Plate
c
heck wiring diagram
electrical devices connected thru Protector
c ,
heck current rePlace
c ,
heck resistance rePlace comPressor
P
urge or vacuum and recharge
c ,
heck for reason rePair
B
low clean with comPressed air
c ,
ool amBient relocate unit
r .
ePair or rePlace
r .
ePlace
s
witch two wires at disconnect
r
ePair leak and recharge
r .
ePair or rePlace
. r .
ePair or rePlace
a ,
djust rePair or rePlace
™
±10%
of voltage
,
check for added
.
.
.
.
.
.
, .
add ventilation
.
.
.
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