TROUBLESHOOTING CHART
Note: Troubleshooting problems may have similar causes and solutions,
PROBLEM POSSIBLE CAUSE SOLUTION
Excessive current draw Low voltage/motor ovedoad Check that power suppEy is adequate and that compressor is on a
trips circuit breaker of dedicated circuit. If using extension cord, try using without. If
motor reset switch compressor is connected to a circut protected by a fuse, use dual
element time delay fuses (Buss Fusetron type "T" only).
Drive belt too tight Readjust belt tension
Restricted air passages Inspect and replace transfer tubes or check varve, as required.
Compressor stalls Low voltage motor Furnish adequate power.
Bad check valve Replace the check valve.
Seized pump Contact authorized service center.
Low discharge pressure Air leaks Tighten or replace leaking'fiti"i'ngs or connections. Do not
overtighten.
Leaking valves Contact authorized service center.
Restricted air intake Clean or replace air filter element(s).
Blown gaskets Contact authorized service center.
Worn piston rings or cylinder Contact authorized service center.
Compressor pump Loose engine pulley or Retighten pulley and flywheel Check alignmenL
knocking compressor flywheel
Low oil level in pump crankcase Keep oil at proper level at all times.
Excess carbon on valves or top Contact authorized service center.
of piston
Oil in discharge air Worn piston rings or cylinder Contact authorized service center.
Restricted air intake Clean or replace the air filter element(s).
Oil level too high Reduce to proper level
Overheating Poor ventilation Relocate compressor to an area with cool, dry, well circulated air,
at least 12 in. from nearest wall
Dirty cooling surfaces Clean all cooling surfaces thoroughly.
Restricted air passages Replace transfer tubes and/or unloader.
Excessive belt wear Pulley out of alignment Realign pulley with compressor flywheel
Improper belt tension Readjust.
Pulley wobbles Replace the pulley and check for a damaged crankshaft or
flywheel
Compressor won't start Too much back pressure in tank Open petcock when starting motor.
in cold temperatures
40W oil in crankcase Use SAE 10W-30 synthetic oil
Compressor too cold Move compressor to a warmer location.
200-2437 21
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