Product Manual

Page 28 of 36
Failure
Possible Cause
Corrective Action
Moisture in pump
crankcase
Fittings are not tight
Tighten fittings where air can be heard
escaping. Check fittings with soapy
water solution. DO NOT
OVERTIGHTEN.
Leaking seals
Contact an authorized service center.
Unit operating in damp or
humid conditions
Move unit to a dry, well-ventilated area.
Detergent type oil being used in
pump
Drain oil and refill pump with synthetic
blend, non-detergent air compressor oil.
Extremely light duty cycles
Run unit for longer duty cycles. It is
recommended to run at high throttle 50-
75% of the run time and idle for 25% of
the run time.
Piston rings damaged or worn
Contact an authorized service center.
Cylinder or piston damaged or
worn
Contact an authorized service center.
Compressor cylinder finish
worn
Contact an authorized service center.
Water in pump oil
Drain oil and refill pump with synthetic
blend, non-detergent air compressor oil.
Moisture in pump
crankcase
Belt too tight
Check belt tension. See Adjusting Belt
Tension under Belt Replacement / Belt
Tension / Motor Pulley & Flywheel
Adjustment.
Low voltage or motor is
overloaded
Check that the power supply is adequate
and that compressor is on a dedicated
circuit. If using an extension cord, try
operating without. If the compressor is
connected to a circuit protected by a
fuse, use dual element time delay fuses
(Buss Fusetron™ type “T” only).
Restricted air passages
Inspect and replace the transfer tubes or
check valve, as required.
Compressor won’t start in
cold temperatures
Detergent type oil being used in
pump
Drain the oil and refill the pump with
synthetic blend, non-detergent air
compressor oil.
Too much back pressure in
tank
Open the drain valve when starting the
motor.
Compressor is too cold
Move the compressor to a warmer
location.