TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
1. Compressor will not operate.
1. No electrical power.
1. Turn on power.
2. Pressure switch not making contact
2. See pressure switch adjustment.
2. Excessive noise in operation
1. Loose pulley, flywheel, belt, beltguard, 1. Tighten.
cooler, clamps or accessories.
2. Lack of oil in crankcase.
2. Check for possible damage to
bearings, replenish oil.
3. Piston hitting the valve plate.
3. Remove the compressor cylinder
head and inspect for foreign
matter on top of the piston.
Add a new gasket and reassemble
the head.
4. Compressor floor mounting loose.
4. Tighten.
5. Defective crankcase.
5. Repair or replace.
6. Excessive crankshaft end play.
6. Adjust and shim properly.
3. Knock - same cycle as R.P.M.
1. Main bearings.
1. Replace bearings.
2. Connecting rod bearing.
2. TIghten.
4. Knock occurs while
1. Connecting rod bearings.
1. Replace rod.
compressor is loading.
2. Wrist pins, wrist pin bearings.
2. Replace complete piston
assembly.
5. Milky oil in oil reservoir.
1. Water entering oil reservoir due
1. Pipe air intake to less humid air\
to compressor operating in high
source.
humidity environment.
6. Excessive oil consumption.
1. Restricted air intake.
1. Clean or replace air filter.
2. Oil leaks.
2. Tighten bolts or replace gasket.
3. Worn piston rings.
3. Replace piston rings.
4. Wrong oil viscosity.
4. Drain oil, refill with oil or proper
viscosity. See Lubrication Section.
5. Compressor titled too much.
5. Level compressor.
6. Scored cylinder.
6. Replace cylinder.
7. Oil in discharge air.
1. Compressor air intake restricted.
1. Clean air filter element and check
for other restrictions in the intake
system.
2. Worn piston rings.
2. Replace rings.
3. Excessive oil in compressor.
3. Drain down to full mark on sight
gauge.
4. Wrong oil viscosity.
4. Check viscosity.
See Lubrication
Section.
5. Piston rings installed up-side down.
5. Install ring in proper position.
8. Compressor vibrates.
1. Mounting bolts loose.
1. Tighten.
2. Compressor not properly mounted.
2. Level compressor so that all feet
touch the floor before tightening
down.
3. Pulley and flywheel misaligned.
3. Realign.
4. Belts loose.
4. Tighten belts. See Maintenance
Section.
5. Bent crankshaft.
5. Replace crankshaft.
6
Содержание SA315240H346
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