Troubleshooting; Service And Adjustments - Craftsman 919.195411 Owner's Manual

h| -'Toll : J_oXo_
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.
PROBLEM
Excessive tank
pressure -
safety 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.
CAUSE CORRECTION
Pressure switch does not
shut off motor when
compressor 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.
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
OVERTIGHTEN.
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.
_Risk of
Bursting.
Do not drill into, weld or
otherwise modify air tank
or it will weaken. The tank
can rupture or explode.
Air leaks Leaking seal. Contact a Trained Service
between head Technician.
and valve plate.
D30090 24_ENG