16 - ENG
TROUBLESHOOTINGRisk of Unsafe Operation. Unit cycles automatically when
powerison.Whenservicing,you maybeexposedtovoltagesources,com-
pressedair, or moving parts. Before servicing unit unplug or disconnect
electricalsupplytotheaircompressor,bleedtankofpressure,andallowthe
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.
DoNotOvertighten.
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,weldorotherwise
modifyairtankoritwill
weaken. The tank can
ruptureorexplode.
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.
KnockingNoise. Possible defect in
safety valve. Operate safety valve
manually by pulling on
ring. If valve still leaks,
it should be replaced.