Craftsman 919.724123 - Manuel (Page 19)

19 - ENG A14083
TROUBLESHOOTING
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 CAUSE CORRECTION
Pressure switch does
not shut off motor when
compressor reaches "cut-
out" pressure.
Pressure switch "cut-out"
too high.
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.
Excessive tank
pressure - safety
valve pops off.
Tube fittings are not tight
enough. Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution. Do Not
Overtighten. Air leaks at
fittings.
Air leaks in air
tank or at air
tank welds. Defective air tank. 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.
Air leaks
between head
and valve plate. Leaking seal. Contact a Trained Service
Technician.
Possible defect in safety
valve.
Operate safety valve
manually by pulling on ring.
If valve still leaks, it should
be replaced.
Air leak from
safety valve.
Possible defect in safety
valve. Operate safety valve
manually by pulling on ring.
If valve still leaks, it should
be replaced. Knocking Noise.