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14 Senco
®
Electric Air Compressor Manual 2004
TROUBLESHOOTING
REMEDY
Adjust pressure regulator knob to proper setting or
replace.
Clean or replace.
Check for leaks and repair.
Replace with larger hose or connectors.
Tighten or replace.
Check the accessory air requirement. If it is higher
than the CFM or pressure supply of the air
compressor, you need a larger air compressor.
PROBABLE CAUSE
Pressure regulator knob not turned to high enough
pressure or defective pressure regulator.
Restricted air intake filter.
Air leaks.
Hose or hose connections are too small or long.
Slipping belt.
Air compressor is not large enough for air require-
ment.
SYMPTOM
11. Insufficient pressure at air tool or accessory.
REMEDY
Change oil and move air compressor to a less humid
environment.
PROBABLE CAUSE
Water in oil due to condensation.
SYMPTOM
14. Oil has milky appearance.
REMEDY
Clean or replace.
Drain air tank and measure pump up time. Compare
to specifications. If longer, remove pump head and
inspect valve plate, clean or replace.
Clean or replace.
PROBABLE CAUSE
Restricted air intake filter.
Defective (reed) valve.
Restriction in pilot valve.
SYMPTOM
12. Air compressor not making enough air.
REMEDY
Clean or replace.
Do not incline the air compressor more than 10° in
any direction while running.
Drain oil. Refill to proper level with Senco PC0344
oil.
Clean.
Repair.
Contact Senco Customer Service 800-543-4596.
PROBABLE CAUSE
Restricted air intake filter.
Air compressor on unlevel surface.
Crankcase overfilled with oil.
Plugged oil dipstick vent.
Oil leaks.
Worn piston rings or scored cylinder.
SYMPTOM
13. Excessive oil consumption in pump.
REMEDY
Drain air tank after every use. Drain air tank more
often in humid weather and use an air line filter.
PROBABLE CAUSE
Condensation in air tank caused by high level of at-
mospheric humidity or air compressor is not run long
enough.
SYMPTOM
15. Moisture in discharge air.