Stationary Electric Air Compressor Manual
19
TROUBLESHOOTING
SYMPTOM
Noisy operation.
Pressure drop in air tank or rapid
pressure loss when air compres-
sor is shut off.
Insufficient pressure at air tool or
accessory.
Air leaks from Safety Relief Valve.
Air leaks at pump.
Air continues to leak at Motor/
Pressure Switch while motor is
running.
Air blowing from Air Intake Filter
during Normal mode operation
(not Continuous Run).
PROBABLE CAUSE
Loose motor pulley or pump
flywheel.
Lack of oil in the pump.
Carbon deposits on pistons or
valves.
Bearing, piston or connecting rod
failure.
Air leaks at connections.
Defective Check Valve or Pilot
Valve.
Air leak in air tank.
Air leaks or restrictions.
Restricted air intake filter.
Pipe, hose or hose connections
are too small or long.
Air compressor is not large
enough for air requirement.
Slipping belt.
Restricted Pilot Valve.
Possible defective Safety Relief
Valve.
Excessive air tank pressure.
Defective gaskets.
Defective Motor/Pressure Switch.
Damaged inlet (reed) valve.
REMEDY
Tighten pulley and or flywheel.
Add correct amount of oil.
Remove cylinder head and
inspect. Clean or replace valve
plate.
STOP THE AIR COMPRESSOR!
Contact Mi-T-M® Customer Ser-
vice.
Allow the air compressor to build
pressure to the maximum al-
lowed. Turn off and brush a soapy
water solution onto all connec-
tions. Check connections for air
bubbles. Tighten the connections
where leaks are present.
Remove, clean or replace.
Air tank must be replaced. Do not
attempt to repair air tank!
Check for leaks and repair.
Clean or replace.
Replace with larger pipe, hose or
connectors.
Use a smaller tool or larger air
compressor.
Tighten or replace.
Clean or replace.
Operate Safety Relief Valve manu-
ally by pulling on ring. If it still
leaks, it should be replaced.
Replace Motor/Pressure Switch.
Clean, reset or replace Pilot Valve.
Torque head bolts to 19.5 ft./lbs.
for Single Stage & 33.2 for 2
stage.
Replace.
Remove cylinder head and
inspect. Clean or replace valve
plate.
