Section Viii - Troubleshooting - Quincy QGB Series Instruction Manual

Unscheduled Shutdown (continued):
f hat
aulty sensors
f
aulty control relay
Thermal Overload Relays Tripping:
e
xcessive discharge Pressure
l
ow voltage
l
oose overload connection
i
ncorrect thermal overload relay setting
l
oose motor or starter wiring
f
aulty motor
Low Air Delivery:
P
lugged air intake filter element
e
xcessive leaks in the service lines
i
nlet valve not fully oPen
r
estricted fluid flow
Low Receiver Pressure:
e
xcessive air demand
e
xcessive leaks in the service lines
i
nlet valve not fully oPen
P
lugged air intake filter

Section VIII - Troubleshooting

c
ontact a qualified service technician for
.
rePairs
r
ePlace relay
l
ower full load Pressure setting at control
.
Panel
c
heck voltage and amPerages while oPerating
at full load Pressure
t
ighten mounting screws on thermal overload
c
heck motor namePlate and comPare to
overload relay setting
c
heck all connections for tightness
c
heck motor starter wiring Before removing
. r
motor
motor manufacturer rePair center
c
lean air filter element or rePlace with new
element
c
heck service lines for leaks with soaP suds
r
ePair as necessary
c
heck for Build uP or gumming of shaft
c
heck fluid filter for Plugging
r
eevaluate air demand
comPressors as needed
c
heck service lines for leaks with soaP suds
r
ePair as necessary
c
orrect in accordance with the instructions in
"i
nlet valve not oPening or closing in relation
to air demand
.
guide
r
ePlace air filter element
Quincy Compressor-QGB
.
.
.
emove motor and have tested at
.
.
.
. i
nstall additional
.
.
"
section of trouBleshooting
.
™
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