Quincy Compressor Q12120P Instruction & Parts Manual page 12

PROBLEM
7. Excessive lubricant consump-
tion and/or ex cessive lubricant
in hose.
8. Air blowing from inlet filter.
9. Crankcase lubricant is milky.
10. Compressor runs backwards.
11. Insufficient pressure at tool or
acces sory.
12. Tank loses pressure rapidly
when compressor shuts off.
1312100602, September 2012
CAUSES
1. Crankcase overfilled with
lubricant.
2. Lubricant leaks.
3. Worn piston rings.
4. Wrong lubricant viscosity.
5. Compressor on unlevel sur-
face.
6. Scored cylinder.
7. Plugged crankcase breather.
1. Damaged inlet (reed) valve.
1. Water in lubricant due to
humidity or condensation.
1. Reversed wiring polarity.
1. Leaks or restrictions.
2. Restricted air intake (filter
plugged).
3. Slipping belt.
4. Hose or hose connectors too
small.
5. Compressor incorrectly sized.
6. Regulator not turned up to
high enough pressure / faulty
regulator.
1. Loose connection or leak (pipe,
tank drain valve, tubing, fit-
ting or hose).
2. Faulty check valve.
11
CORRECTION
1. Drain lubricant. Refill to
proper level with proper lubri-
cant (refer to Lubrication).
2. Tighten bolts on compressor
to proper torque or replace
gaskets.
3. Take to Authorized Service
Center.
4. Drain lubricant & refill with
proper lubricant (refer to Lu-
brication).
5. Level compressor.
6. Take to Authorized Service
Center.
7. Clean or replace crankcase
breather.
1. Take to Authorized Service
Center.
1. Change lubricant. Move
compressor or air inlet to less
humid atmosphere.
1. Contact qualified electrician.
1. Check for leaks or restrictions
in hose or piping. Repair.
2. Clean or replace filter.
3. Tighten belt (refer to Belt
Align ment & Adjustment).
4. Replace with larger hose or
connec tors.
5. Either use a smaller tool or a
larger compressor.
6. Turn the regulator to the
proper set ting / replace faulty
regulator.
1. Turn unit off, unplug it, &
tighten or replace fittings or
components.
2. Replace faulty check valve.
Quincy Compressor
3501 Wisman Lane, Quincy IL - 62305-3116