VMAC
– Vehicle Mounted Air Compressors
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59
SYMPTOM
POSSIBLE CAUSE
CORRECTIVE ACTION
Engine Stalls
Compressor pressure
set too high.
Lower compressor air
pressure to factory settings
Pressure cannot be set
above 150 psi.
Starting compressor
under pressure.
Ensure system is
depressurizing on shut
down.
Operating at too high of
an elevation.
See section on elevation.
Low oil in engine.
Add oil to engine.
Low fuel in engine.
Add fuel to engine.
Spark plug gap.
Replace spark plug.
Spark arrester.
Clean spark arrester.
SYMPTOM
POSSIBLE CAUSE
CORRECTIVE ACTION
Excessive vibration
Loose fasteners.
Torque fasteners, use
appropriate thread locking
compound.
Belt or pulley worn.
Replace components as
needed.
SYMPTOM
POSSIBLE CAUSE
CORRECTIVE ACTION
Engine does not
decrease idle
Throttle tube frozen,
plugged or obstructed.
Clean tube.
Throttle actuator
failure.
Replace actuator.
Discharge valve failure.
Replace discharge valve.
SYMPTOM
POSSIBLE CAUSE
CORRECTIVE ACTION
Engine does not
increase idle
Throttle actuator
failure.
Replace actuator.
Discharge valve failure. Replace discharge valve. .
Unloader valve
manually activated.
Manually disengage
unloader valve.
SYMPTOM
POSSIBLE CAUSE
CORRECTIVE ACTION
Blowdown does not
function
Scavenge tube frozen,
plugged or obstructed.
Clean tube.
Blowdown muffler
plugged or obstructed.
Replace muffler.
Blowdown valve
failure.
Replace blowdown valve.
Summary of Contents for RAPTAIR-G30
Page 1: ...RAPTAIR G30 Gas Drive Air Compressor Installation Owner s and Service Manual G300002...
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