Troubleshooting - Craftsman 919.195410 Owner's Manual

parts, or compressed air sources. Personal injury may occur. Before serv-
icing: Unplug or disconnect electrical supply to the air compressor, bleed
tank of pressure, and allow the air compressor to cool.
PROBLEM
Excessive tank
pressure - safe-
ty valve pops
off.
Air leaks at
fittings.
Air leaks at or
inside check
valve
Air leaks at
pressure switch
release valve.
(if equipped)
Air leaks in air
tank or at air
tank welds.
Air leaks
between head
and valve plate.
D24910

TROUBLESHOOTING

Performing repairs may expose voltage sources, moving
CAUSE
Pressure switch does not
shut off motor when com-
pressor reaches "cut-out"
pressure.
Pressure switch "cut-out"
too high.
Tube fittings are not tight
enough.
Check valve seat damaged.
Defective pressure switch
release valve.
Defective air tank.
Leaking seal.
Move On/Auto/Off lever to
the "OFF" position, if the air
compressor does
not shut off, contact a
Trained Service Technician.
Contact a Trained Service
Technician.
Tighten fittings where air can
be heard escaping. Check
fittings with soapy water
solution. DO NOT OVER-
TIGHTEN.
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
Adjustments" section.
Contact a Trained Service
Technician.
Air tank must be replaced.
Do not repair the leak.
weld or otherwise modify air
tank or it will weaken. The
tank can rupture or explode.
Contact a Trained Service
Technician.
24- ENG
CORRECTION
Do not
drill into,