19 - ENG
N028678
TROUBLESHOOTING
Risk of Unsafe Operation. Unit cycles automatically when power
is on. When servicing, you may be exposed to voltage sources,
compressed air, or moving parts. Before servicing unit unplug or disconnect
electrical supply to the air compressor, bleed tank of pressure, and allow the air
compressor to cool.
PROBLEM
CAuse
CORRECTION
Excessive
tank pressure
- safety valve
pops off.
Pressure switch does not
shut off motor when
compressor reaches
"cut-out" pressure.
Move Auto/Off lever to the
"Off" position, if the outfit
does not shut off contact a
Trained Service Technician.
Pressure switch "cut-out"
too high.
Contact a Trained Service
Technician.
Air leaks at fit-
tings.
Tube fittings are not tight
enough.
Tighten fittings where air can
be heard escaping. Check fit-
tings with soapy water solu-
tion.
Do Not Overtighten.
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
Check Valve" in the Service
and Adjustment section.
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 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
between head
and valve plate.
Leaking seal.
Contact a Trained Service
Technician.
Summary of Contents for 919.167620-C
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