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19 - ENG A17883
TROUBLESHOOTING
PROBLEM
CAUSE
CORRECTION
Pressure switch does not
shut "Off" motor when
compressor reaches
"cut-out" pressure.
Pressure switch "cut-out"
too high.
Move On/Auto/Off lever to
the "Off" position, if the unit
does not shut "Off"
contact a Trained Service
Technician.
Contact a Trained Service
Technician.
Excessive tank
pressure - safety
valve pops "Off".
Tube fittings are not tight
enough.
Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution. Do Not
Overtighten.
Air leaks at
fittings.
Air leaks at
pressure switch
release valve.
Defective pressure switch
release valve.
Contact a Trained Service
Technician.
Air leaks in air
tank or at air
tank welds.
Defective air tank.
Air leaks
between head
and valve plate.
Leaking seal.
Air leaks at or
inside check
valve.
Check valve seat damaged.
A defective check valve
results in a constant air leak
at the pressure release valve
when there is pressure in the
tank and the compressor is
shut "Off". Replace check
valve. Refer to the "To
Replace or Clean Check
Valve" in the "Service and
Adjustment" section.
Contact a Trained Service
Technician.
Air tank must be replaced.
Do not repair the leak.
Risk of
Bursting.
Do not drill into, weld or
otherwise modify air tank
or it will weaken. The tank
can rupture or explode.
Risk of Unsafer Operation. Performing repairs may
expose voltage sources, moving parts, or compressed
air sources. Personal injury may occur. Before servicing: Unplug or
disconnect electrical supply to the air compressor, bleed tank of pressure,
and allow the air compressor to cool.