16 - ENG
TROUBLESHOOTING
Risk of Unsafe Operation. Unit cycles automatically when
powerison.Whenservicing,you maybeexposedtovoltagesources,com-
pressed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 On/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 fittings. 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 in air tank
or at air tank welds. Defective air tank. Air tank must be
replaced. Do not
repair the leak.
Risk
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.
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. Possible defect in
safety valve. Operate safety valve
manually by pulling on
ring. If valve still leaks,
it should be replaced.