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Note: Troubleshooting problems may have similar causes and solutions.
PROBLEM
Excessive current draw
trips circuit breaker
Compressor stalls
Low discharge
pressure
Compressor pump
knocking
Oil in discharge air
Overheating
Excessive belt wear
Compressor won't start
in cold temperatures
28
TROUBLESHOOTING CHART
POSSIBLE CAUSE
Low voltage/motor overload
Drive belt too tight
Restricted air passages
Low voltage to motor
Bad check valve
Seized pump
Air leaks
Leaking valves
Restricted air intake
Blown gaskets
Worn piston rings or cylinder
Loose motor pulley or pump
flywheel
Low oil level in pump crankcase
Excess carbon on valves or top of
piston
Worn piston rings or cylinder
Restricted air intake
Oil level too high
Poor ventilation
Dirty cooling surfaces
Pulley out of alignment
Improper belt tension
Pulley wobbles
Too much back pressure in tank
40W oil in crankcase
Compressor too cold
SOLUTION
Check that power supply is adequate and that compressor is on a
dedicated circuit.
Readjust belt tension.
Inspect and replace transfer tubes or check valve, as required.
Furnish adequate power.
Replace the check valve.
Contact authorized service center.
Tighten or replace leaking fittings or connections. Do not overtighten.
Contact authorized service center.
Clean or replace air filter element(s).
Contact authorized service center.
Contact authorized service center.
Retighten pulley and flywheel. Check alignment.
Keep oil at proper level at all times.
Contact authorized service center.
Contact authorized service center.
Clean or replace the air filter element(s).
Reduce to proper level. Use premium compressor oil.
Relocate compressor to an area with cool, dry, well circulated air,
at least 12 in. from nearest wall.
Clean all cooling surfaces thoroughly.
Realign pulley with compressor flywheel.
Readjust.
Replace the pulley and check for a damaged crankshaft or flywheel.
Open petcock when starting motor.
Use SAE 30W oil.
Move compressor to a warmer location.
200-2260
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