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30L/38L SILENT OIL FREE AIR COMPRESSOR
TROUBLESHOOTING
Problem
Excessive air tank
pressure – safety valve
pops off
Air leaks
Air leaks in air tank or at
air tank welds
Air leaks between head
and valve plate
Air leaks from safety
valve
Knocking noise
Pressure reading on the
regulated pressure
gauge drops when an
accessory is used
Air compressor is not
supplying enough air to
operate accessories
Possible Cause
Pressure switch does not shut
when air compressor reaches
cut-out pressure
Pressure switch cut-out too high
Tube fittings are not tight enough
Defective air tank
Leaking seals
Defective safety valve
Defective safety valve
Carbon build-up in pump
Regulator is not adjusted
correctly for accessory being
used
Prolonged excessive use of air
Air compressor is not large
enough for accessory
14
Solution
Set the on/off switch to off, if the
unit does not shut off contact an
authorized service center.
Contact an authorized service
center.
Tighten fittings where air can be
heard escaping. Check fittings with
soapy water solution. Do not over
tighten.
Air tank must be replaced. Do not
repair the leak.
Warning: Risk of bursting. Do not
drill into, weld or otherwise modify
air tank or it will weaken. The air
tank can rupture or explode.
Contact an authorized service
center.
Operate safety valve manually by
pulling on ring. If valve still leaks, it
must be replaced.
Operate safety valve manually by
pulling on ring. If valve still leaks, it
must be replaced.
Contact an authorized service
center.
It is normal for some pressure drop
to occur when an accessory is
used, adjust the regulator.
Note: Adjust the regulated
pressure under flow conditions
while accessory is being used.
Decrease amount of air usage.
Check the accessory air
requirement. If it is higher than the
SCFM or pressure supplied by
your air compressor, a larger air
compressor is needed to operate
accessory.
ENG
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