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TROUBLESHOOTING CHART
1
PROBLEM
POSSIBLE CAUSE
SOLUTION
Excessive current draw
trips circuit breaker or
motor reset switch
Compressor stalls
Low voltagehotor overload
Drive belt too tight
Restricted air passages
Low voltage to motor
Check that power supply is adequate and that compressor is on a
dedicated circuit. If using extension cord,
try
using without.
Readjust belt tension.
Inspect and replace transfer
tubes
or check valve, as required.
Fumish adequate power.
~
Bad check valve
Seized pump
Replace the check valve.
Contact authorized service center.
Low discharge pressure
Contact authorized service center.
Air leaks
lighten or replace leaking fittings or connections. Do not
overtighten.
Compressor pump
,
knocking
I
I
Low oil level in pump crankcase
1
Keep
oil
level full at all times.
1
Restricted air intake
1
Clean or replace the air filter eiement(s1.
Restricted air intake
Leaking valves
Clean or replace air filter element(s).
Loose motor pulley or pump
flywheel
Retighten pulley and flywheel. Check alignment.
Clean or replace regulator or internal parts.
Oil in discharge air
Revision
B
200-2127
19
Excess carbon on valves or top of Contact authorized service center.
piston
Wom piston rings or cylinder
Contact authorized sewice center.
i
2
I
Overheating
Excessive belt wear
Oil level
t o o
high
Poor ventilation
Dirty coding surfaces
Clean all cooling surfaces thoroughly.
4
Pulley out of alignment
Reduce to proper level. Use non-detergent oil.
Relocate compressor to an area with cool, dry, well circulated air,
at least 12 in. from nearest wall.
1
Realign pulley with compressor flywheel.
Compressor won't start
in cold temperature
Regulated Pressure
Gauge Reading Drops
When Air Accessory is
Being Used
I
Improper belt tension
Readjust.
Pulley wobbles
Replace the pulley and check for
a
damaged crankshaft or
flywheel.
Too
much back pressure in tank
Open petcock when starting motor.
4OW oil
in crankcase
Use SAE
1OW
oil.
Compressor too cold
Move compressor to a warmer location.
This is normal
If
pressure drops too low, adjust regulator while accessory is beinc
used.
Compressor not large enough
Check air requirement of accessory. If it is higher than CFM and
pressure supplied
by
compressor,
you
need a larger
compressor.
Most accessories are rated at 25% of actual CFM while running
continuously.
Air Leaks from
Regulator, or Regulator
Does Not Regulate
I
Pressure
Dirty or damaged regulator
intemal parts
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