Craftsman 919.167620-C Owner's Manual page 19

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
Excessive
tank pressure
- safety valve
pops off.
Air leaks at fit-
tings.
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.
TROUBLESHOOTING
Risk of Unsafe Operation. Unit cycles automatically when power
is on. When servicing, you may be exposed to voltage sources,
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.
Defective pressure switch
release valve.
Defective air tank.
Leaking seal.
CORRECTION
Move 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 fit-
tings with soapy water solu-
tion. 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
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.
19 - ENG
Risk of
Bursting
N028678