Section VII - Troubleshooting
Probable Causes:
Corrective action:
Compressor Does not unload
When there is no air Demand:
f
aulty
blow
down
valve
l
eaks
in
service
lines
Compressor Does not revert to
Load When Service Line Pressure
Drops to reset Pressure:
l
oose
wiring
connection
j
ammed
air
inlet
valve
assembly
Compressor Will not time-out or
Shut Down When unloaded (auto/
Dual only):
l
eaks
in
service
lines
f
aulty
air
pressure
sensors
excessive Water in Plant air
Distribution System:
c
logged
moisture
separator
/
trap
i
nstallation
/a
pplication
f
aulty
cooler
/
leaks
Pressure relief Valve exhausting:
p
lugged
separator
f
aulty
receiver
pressure
gauge
f
aulty
pressure
relief
valve
r
epair
or
replace
as
necessary
.
c
heck
lines
before
mpc
valve
.
c
heck
and
tighten
wiring
terminals
.
c
heck
and
repair
air
inlet
valve
.
c
heck
plant
air
distribution
system
for
leaks
.
r
eplace
as
necessary
.
c
lean
or
replace
as
required
.
c
heck
other
compressors
on
same
system
.
r
eplace
cooler
.
r
eplace
with
new
air
/
fluid
separator
.
c
heck
gauge
for
accuracy
and
replace
if
necessary
. a
djust
control
settings
.
c
heck
pressure
relief
valve
for
correct
pressure
setting
. i
f
valve
is
still
leaking
,
replace
it
.
Quincy Compressor-QGV Series
67
Summary of Contents for QGV-100
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Page 17: ...Section II Description This page intentionally left blank Quincy Compressor QGV Series 11 ...
Page 74: ...Appendix A Dimensional Drawings QGV 50 air cooled 68 Quincy Compressor QGV Series ...
Page 75: ...Appendix A Dimensional Drawings QGV 50 water cooled Quincy Compressor QGV Series 69 ...
Page 76: ...Appendix A Dimensional Drawings QGV 75 100 air cooled 70 Quincy Compressor QGV Series ...
Page 77: ...Appendix A Dimensional Drawings QGV 75 100 water cooled Quincy Compressor QGV Series 71 ...
Page 78: ...Appendix A Dimensional Drawings QGV 150 200 air cooled 72 Quincy Compressor QGV Series ...
Page 79: ...Appendix A Dimensional Drawings QGV 150 200 water cooled Quincy Compressor QGV Series 73 ...
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