Troubleshooting - Quincy QTS Series Instruction Manual

Read and understand all the safety precautions listed in the front of this manual and follow all procedures listed
in MAINTENANCE before making repairs. Refer to the gas engine owner's manual for troubleshooting a gas
engine.
PROBLEM
1. Compressor won't operate.
2. Motor hums or runs slowly
when first turned on.
3. Fuses blow or circuit breakers
trip.
Industrial Series
50263-106, October 2004
CAUSES
1. Power cord not plugged in.
2. Auto/off switch in "off"
position.
3. Motor overload relay tripped.
4. Fuse blown &/or circuit
breaker is tripped.
5. Defective pressure switch.
6. Defective motor.
7. Lack of lubricant in compres-
sor (can cause serious damage
to compressor).
8. Belt too tight or too loose.
9. Motor voltage does not match
voltage of power source.
1. Light duty extension cord
being used.
2. Loose electrical connection.
3. Low voltage.
4. Motor sized incorrectly.
5. Defective motor.
6. Motor voltage does not match
voltage of power source.
1. Loose electrical connection.
2. Too many lights or appliances
being operated on the same
circuit as the compressor
(circuit overloaded).
3. Defective check valve or
unloader.
4. Low voltage.
5. Motor sized incorrectly.
6. Incorrect size fuse or circuit
breaker.
7. Defective motor.
8. Motor voltage does not match
voltage of power source.
18

TROUBLESHOOTING

CORRECTION
1. Plug power cord in.
2. Switch to "auto".
3. Turn auto/off switch to the
"off" position. Push the motor
thermal overload (red) button
firmly until a click is heard.
Turn auto/off switch to "auto".
4. Replace fuse or reset circuit
breaker.
5. Replace or repair pressure
switch.
6. Replace or repair motor.
7. Add lubricant (refer to
Lubrication).
8. Adjust belt (refer to Belt
Alignment & Adjustment).
9. Change power cord & voltage
of motor to match power
source.
1. Use additional hose instead of
extra extension cord or use
heavier gauge extension cord.
2. Repair electrical connections.
3. Check with voltmeter.
4. Replace with correctly sized
motor.
5. Replace motor.
6. Change power cord & voltage
of motor to match voltage of
power source.
1. Repair electrical connections.
2. Try another circuit or remove
other appliances from circuit
being used.
3. Replace check valve or
unloader.
4. Check with voltmeter.
5. Replace with correctly sized
motor.
6. Check for proper size fuse.
7. Replace motor.
8. Change power cord & voltage
of motor to match voltage of
power source.
Quincy Compressor
3501 Wisman Lane, Quincy IL - 62305-3116