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_
Performing repairs
may expose voltage sources_ moving
parts
or compre_
air sources, moving parts or
compressed
air sources;
Personal injury may occur. Prior to attempting
any repairsi Unplug the air compressor and bleed off affair tank air
PROBLEM
Excessive tank
pressure - safer
valve pops off.
Air leaks at
fittings,
Air leaks at or
inside check
valve
CAUSE
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,
Air leaks at
Defective pressure switch
pressure switch
release velve,
release valve.
Defective air tank.
Air leaks in eir
tank or at eir
tank welds,
CORRECTION
Move On/Auto/Off
lever to
the "OFF" position,
ifthe
out_it does not shut off
contact e Trained Service
Technician.
Contact a Trained Service
Technician.
Tighten fittings where air can
be heard escaping. Check
fittings with soapy water
solution, Do Not
Overtishten.
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 e Trained Service
Technician.
Air leaks
Leaking seal.
between head
and valve plate.
21- ENG
D27304
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