Section Viii - Troubleshooting - Quincy QGB Series Instruction Manual

Frequent Air Cleaner Clogging:
c
omPressor oPerating in highly contaminated
atmosPhere
a
ir cleaner not adequate for conditions
Inlet Valve Not Opening Or Closing
In Relation To Air Demand:
i
mProPer Pressure setting or faulty sensor
e
xcessive moisture in control air line at air
cylinder
i
mProPer functioning of inlet valve Piston
j
ammed air inlet valve assemBly
f
aulty solenoid valve
f
aulty shuttle valve
l
oose wiring connections at solenoid valve
Pressure switch
B
roken sPring in air inlet valve
Compressor Does Not Unload
When There Is No Air Demand:
i
ncorrect air Pressure setting
f
aulty air Pressure sensor
f
aulty Blowdown valve
f
aulty solenoid valve
f
aulty differential Pilot valve
l
eaks in control lines
l
eaks in service lines

Section VIII - Troubleshooting

u
se remote air intake mounting
u
se sPecialized air filter
a
uthorized
a
djust air Pressure setting or rePlace sensor
if faulty
s
ervice control air line filter daily
c
heck Piston and cylinder Bore
rePlace as needed
c
heck air inlet valve Bushing and shaft
Piston and cylinder Bore
.
needed
r
ePair or rePlace as necessary
r
ePair or rePlace as necessary
/ c
heck and tighten wiring terminals
r
ePlace sPring
a
djust to ProPer setting
r
ePlace sensor
r
ePair or rePlace as necessary
r
ePair or rePlace as necessary
r
ePair or rePlace as necessary
c
heck all control line fittings and tuBing
c
heck lines Before
Quincy Compressor-QGB
.
. c
ontact an
q d .
uincy istriButor
.
. r
.
. r
ePair or rePlace as
.
.
.
.
.
.
.
.
mPc .
valve
™
Back to Table of Contents
,
.
ePair or
. c
heck
.
.
75