TROUBLESHOOTING
Symptom 11. Insufficient pressure at air tool or accessory.
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.
Air compressor is not large enough for air requirement.
REMEDY
Adjust pressure regulator knob to proper setting or replace.
Clean or replace.
Check for leaks and repair.
Replace with larger hose or connectors.
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.
Symptom 12. Air compressor not making enough air.
PROBABLE CAUSE Restricted air intake filter.
Defective (reed) valve.
REMEDY
Clean or replace.
Drain air tank and measure pump up time. Compare to specifications. If lower, remove pump head and inspect valve plate, clean or replace.
Restriction in pilot valve. | Clean or replace. |
Symptom 13. Excessive oil consumption in pump.
| PROBABLE CAUSE | REMEDY |
| Restricted air intake filter. | Clean or replace. |
| Air compressor on unlevel surface. | Do not incline the air compressor more than 10° in any |
|
| direction while running. |
| Crankcase overfilled with oil. | Drain oil. Refill to proper level with oil. |
| Plugged oil dipstick vent. | Clean. |
| Oil leaks. | Repair. |
| Worn piston rings or scored cylinder. | Contact Senco Customer Service. |
|
|
|
|
|
|
| Symptom 14. Oil has milky appearance. |
|
|
|
|
| PROBABLE CAUSE | REMEDY |
| Change oil and move air compressor to a less humid | |
| Water in oil due to condensation. | |
| environment. | |
|
| |
|
|
|
|
|
|
| Symptom 15. Moisture in discharge air. |
|
|
|
|
PROBABLE CAUSE
Condensation in air tank caused by high level of atmospheric humidity or air compressor is not run long enough.
REMEDY
Drain air tank after every use. Drain air tank more often in humid weather and use an air line filter.
14
