Section Viii - Troubleshooting - Quincy QGB Series Instruction Manual

Section VIII - Troubleshooting

Low Receiver Pressure (continued):
d
ifferential Pilot valve not set correctly
a
ir Pressure setting not set correctly
f
aulty receiver Pressure gauge or sensor
High Receiver Pressure:
a
ir Pressure setting not set correctly
i
nlet valve not closing at lower air demand
B
lowdown valve not relieving receiver Pressure
High Discharge Air Temperature
and/or High Fluid Injection
Temperature:
i
nadequate circulation of cooling air at the
cooler
l
ow fluid level in reservoir
c
aBinet Panels removed
c
ooler Plugged
f
luid filter Plugged
e
xcessive amBient temPeratures
i
ncorrect fan rotation
i
mProPer fluid
72
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a
djust differential Pilot valve to achieve
desired modulation range
a
djust air Pressure switch to achieve desired
-
cut in and cut
c
heck and rePlace as necessary
a
djust air Pressure setting to achieve desired
-
cut in and cut
Pressure does not exceed maximum oPerating
Pressure
c
orrect in accordance with instruction
"i
on nlet
in relation to air demand
trouBleshooting guide
c
heck control solenoid and Blowdown valve
c
heck location of cooler and assure no
restriction to free circulation of cooling air
c
heck cooler fin and clean as necessary
a
dd fluid to recommended level
system for leaks
r
ePlace all Panels
and materials are satisfactory
c
lean cooler
contamination
r
ePlace fluid filter element
m
aximum amBient for ProPer oPeration is listed
in data sheet
comPressor
c
orrect rotation is with the fan Pushing the
air through the cooler
l
leads
1
u
se recommended fluids only
"c
omPressor
Quincy Compressor-QGB
.
- .
out Pressure
- . e
out Pressure nsure unload
.
v
alve not oPening or closing
"
section of this
.
.
,
ensure all sealing surfaces
.
,
find and correct cause of
.
( ).
s
. v
entilate room or relocate
.
. r
everse motor starter
l .
and
2
. r
f "
luids section of this manual
™
.
.
.
.
. c
heck fluid
efer to
.