Troubleshooting - Quincy QGB Series Instruction Manual

Section VIII - Troubleshooting
Failure to Start:
P "on"
ower not turned
B
lown control circuit fuse
s
afety circuit shutdown resulting from high
discharge air temPerature
t
hermal overload relays triPPing
l
ow voltage
f
aulty start switch
P
ower failure
l
oose wire connections
f
aulty control relay
f h a t
aulty igh ir emPerature
f
aulty transformer
Unscheduled Shutdown:
h
igh discharge air temPerature
t
hermal motor overload relays triPPing
P
ower failure
l
oose wire connections
70
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t
disconnect switch or circuit Breaker
r
c
the instruction in the
t
guide
c
condition
start Button
a
check at your entrance meter
that reading to a reading taken at the motor
terminals
for locating the source of low voltage
c
connections
c
c
tightness
r
(hat) s c
witch
service technician for rePairs
c
c
the instruction in the
t
guide
c
condition
the reset Button
c
c
tightness
Quincy Compressor-QGB
"on"
urn the Power By closing the main
. f
ePlace fuse ind and correct cause
orrect the situation in accordance with
"h
"
emPerature section of this trouBleshooting
. r
estart the comPressor
orrect the cause of the overloaded
,
reset overload relay and Press the
.
sk the Power comPany to make a voltage
. u
se these two readings as a Basis
heck the switch for malfunction or loose
.
heck Power suPPly to the unit
heck all wiring terminals for contact and
.
.
ePlace the relay
hat . c
heck switch ontact a qualified
heck secondary voltage on transformer
orrect the situation in accordance with
"h
"
emPerature section of this trouBleshooting
. r
estart the comPressor
orrect the cause of the motor overloaded
,
reset the overload relay and Press
.
heck Power suPPly and transformer fuses
heck all wiring terminals for contact and
.
™
.
.
d a
igh ischarge ir
.
,
then comPare
.
.
.
.
d a
igh ischarge ir
.
.