Craftsman 919.195414 Owner's Manual page 24

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
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
Pressure
reading on
the regulated
pressure gauge
(drops when an
accessory is
used
Air leak from
safety 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.
Defective pressure switch
release valve.
Defective air tank.
Leaking seal.
It is normal for "some"
}ressure drop to occur.
Possible defect in safety
valve.
CORRECTION
Move Auto/Off lever to the "Off"
position, if the unit 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 over tiqhten.
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
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 wi[I weaken. The tank can
rupture or explode.
Contact a Trained Service Technician.
if there is an excessive amount of
pressure drop when the accessory
is used, adjust the regulator as
instructed in the Operation section.
NOTE: Adjust the regulated pressure
under flow conditions (while
accessory is being used).
Operate safety valve manually by
pulling on ring. if valve still leaks, it
should be replaced.
24- ENG