Section Viii - Troubleshooting - Quincy QGB Series Instruction Manual

Section VIII - Troubleshooting

Severe or Abnormal Belt Wear:
s
haft movement
B
elt surFace hard or stiFF
h
ot drive environment
B ,
elt surFace Flaky sticking or sWollen
c
hemical contamination
Integrated Dryer Troubleshooting:
Unit does not run:
m .
otor line oPen
f .
use Blown
t .
riPPed overload
s .
afety controls oPen
f ( )
rozen locked comPressor
w
iring imProPer or loose
Unit short cycles:
m
otor comPressor overload cutting out
s
hortage of refrigerant
s .
uction Pressure low
s
ticking exPansion valve
Compressor will not start – hums:
i .
mProPerly wired
l .
ow line voltage
r
elay or contactor not closing
s - .
ingle Phasing
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Quincy Compressor-QGB
c
heck for center distance changes
i
mProve ventilation to drive
d
o not use Belt dressing
.
contamination
c
lose disconnect switch
r .
ePlace fuse
t , 15
urn switch off wait
.
overload condition
r .
ePair or rePlace
r .
ePair or rePlace
c
heck wiring against diagram
c
heck for high head Pressure
,
condenser high amBient
c
heck high Pressure cutout
r
ePair leak and recharge
c
heck hot gas ByPass adjust
r .
ePair or rePlace
c
heck wiring against diagram
c –
heck voltage correct
c –
heck for reason rePair or rePlace
c .
heck fuses
™
.
.
. e
liminate source of
, .
to start
,
minutes check for
.
,
clogged
, .
or air overload
, .
rePair or rePlace
.
, .
rePair or rePlace
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