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Performing
repairs
may expose
voltage
sources,
moving
parts or compressed
air sources,
moving
parts or
compressed
air sources.
Personal
injury may occur. Prior to attempting
any repairs,
unplug
the air compressor
and bleed off all air tank air
pressure.
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.
Air leaks in air
tank or at air
tank welds.
Air leaks
between
head
and valve plate.
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.
Leaking seal.
Move On/Auto/Off
lever to
the "OFF"
position,
if the
outfit 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
Overti_lhten.
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_
Do not drill into, weld or
otherwise
modify
air tank
or it will weaken.
The tank
can rupture
or explode.
Contact
a Trained Service
Technician.
21-ENG
D24580
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