Central Pneumatic 69667 Owner's Manual & Safety Instructions page 15

Troubleshooting (cont.)
Problem
Overheating 1. Air filters need cleaning/replacing.
2. Crankcase oil too thin or incorrect type.
3. Crankcase oil level too low.
4. Unusually dusty environment.
5. Extension cord used.
6. Unit not on level surface.
Compressor 1. Loose fittings.
starts and stops
excessively
2. Compressor not large enough for job.
Excessive noise 1. Crankcase overfilled with oil or oil
is incorrect thickness or type.
2. Crankcase oil level too low.
3. Loose or damaged belt guard.
4. Loose fittings.
5. Unit not on level surface.
Moisture in Too much moisture in air.
discharge air
Oil in discharge air 1. Crankcase oil too thin or
crankcase overfilled with oil.
2. Crankcase vents clogged.
Safety Valve "pops" Safety valve needs service.
Air leaks from Loose fittings.
pump or fittings
Air leaks from tank Defective or rusted tank.
Follow all safety precautions whenever diagnosing or servicing the compressor.
Disconnect power supply before service.
Item 69667
Possible Causes
For technical questions, please call 1-800-444-3353.
Likely Solutions
1. Check inlet and outlet filters.
Clean and/or replace as needed.
2. Drain oil and refill to proper level with recommended oil.
3. Add oil to proper level, check for leaks.
4. Clean and/or replace filters more often or
move unit to cleaner environment.
5. Eliminate extension cord.
6. Reposition unit on a level surface.
1. Reduce air pressure, then check all fittings with a soap
solution for air leaks and tighten as needed.
Do not overtighten.
2. Check if accessory CFM is met by Compressor.
If Compressor doesn't reach accessory
CFM, you need a larger Compressor.
1. Drain oil and refill to proper level with recommended oil.
2. Add oil to proper level, check for leaks.
3. Replace belt guard.
4. Reduce air pressure, then check all fittings with a soap
solution for air leaks and tighten as needed.
Do not overtighten.
5. Reposition unit on a level surface.
Install inline air filter/dryer, and/or relocate
to less humid environment.
1. Drain oil and refill to proper level with recommended oil.
2. Clean Crankcase vents.
Pull on test ring of safety valve. If it still pops, replace.
Reduce air pressure, then check all fittings with a soap
solution for air leaks and tighten as needed.
Do not overtighten.
Have tank replaced by a qualified technician.
Drain moisture from tank daily to prevent future corrosion.
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