Quincy QTS Series Instruction Manual page 20

PROBLEM
4. Motor overload relay trips
5. Noisy operation.
6. Excessive vibrations.
Industrial Series
50263-106, October 2004
CAUSES
1. Light duty extension cord
being used.
2. Loose electrical connection.
3. Lubricant being used is too
heavy.
5. Defective check valve or
unloader.
6. Low voltage.
7. Freezing temperature.
8. Motor sized incorrectly.
9. Drive belt too tight.
11. Defective motor.
12. Lack of proper ventilation -
room temperature too high.
13. Motor voltage does not match
voltage of power source.
1. Lack of lubricant in crank-
case.
2. Loose pulley, flywheel, belt,
compressor or motor fasten-
ers, beltguard, clamps or
accessories.
3. Carbon deposits on piston or
valves.
4. Worn main bearings, broken
piston, worn wrist pins, wrist
pin bearings, or loose connect-
ing rod bolt.
1. Pulley & flywheel misaligned
or loose.
2. Bent crankshaft.
3. Belt loose.
4. Compressor unit bolted to
uneven surface or not bolted
down at all (stationary
models).
19
CORRECTION
1. Use additional hose instead of
extra extension cord or use
heavier gauge extension cord.
2. Repair electrical connections.
3. Use a lighter weight lubricant
(refer to Lubrication).
5. Replace check valve or
unloader.
6. Check with voltmeter.
7. Warm the compressor or use a
lighter weight lubricant (refer
to Lubrication).
8. Replace with correctly sized
motor.
9. Readjust belt (refer to Belt
Alignment & Adjustment).
11. Replace motor.
12. Move the compressor to a well
ventilated area.
13. Change power cord & voltage
of motor to match voltage of
power source.
1. Check for possible damage to
bearings. Add lubricant (see
Lubrication).
2. Tighten where necessary.
3. Remove the cylinder head and
inspect for foreign matter on
top of the piston. Clean.
4. Take to Authorized Service
Center.
1. Realign or tighten pulley and
flywheel.
2. Take to Authorized Service
Center.
3. Tighten belt (refer to Belt
Alignment & Adjustment).
4. Shim to level surface & fasten
to floor if possible.
Quincy Compressor
3501 Wisman Lane, Quincy IL - 62305-3116