20
Stationary Electric Air Compressor Manual
TROUBLESHOOTING
SYMPTOM
When in the Start/Stop Option,
motor runs continuously.
Moisture in discharge air.
Excessive oil consumption or oil
in hose.
Oil has milky appearance.
Unit runs backward.
PROBABLE CAUSE
Motor/Pressure Switch does not
shut off motor when air compres-
sor reaches "cut-out" pressure
and safety relief valve activates.
Air compressor is incorrectly
sized.
Condensation in air tank caused
by high level of atmospheric
humidity.
Restricted air intake filter.
Air compressor on unlevel sur-
face.
Crankcase overfilled with oil.
Wrong viscosity.
Plugged oil dipstick vent.
Oil leaks.
Worn piston rings or scored cyl-
inder.
Water in oil due to condensation.
Reversed wiring.
REMEDY
Remove power to the machine. If
the electrical contacts are welded
together, replace the pressure
switch.
Limit the air usage to the capac-
ity of the air compressor. Either
use a smaller tool or a larger air
compressor.
Drain air tank after every use.
Drain air tank more often in humid
weather and use an air line filter.
Clean or replace.
Do not incline the air compres-
sor more than 10° in any direction
while running.
Drain oil. Refill to proper level
with SAE-30W non-detergent oil.
Drain oil. Refill to proper level
with SAE-30W non-detergent oil.
Clean.
Tighten pump bolts to torque
stated in Parts List, or replace
gaskets.
Contact Mi-T-M
®
Customer Ser-
vice.
Drain oil. Refill to proper level
with SAE-30W non-detergent oil.
Contact qualified electrician.
