Problem
Possible Causes
Likely Solutions
Compressor does
not start or restart
1. Tank(s) already pressurized.
2. Power cord not plugged in properly.
3. Incorrect power supply.
4. No power at outlet.
5. Thermal overload switch tripped.
6. Building power supply circuit tripped or
blown fuse.
7. Cord wire size is too small or cord is too
long to properly power compressor.
8. Compressor needs service.
1. No problem. Compressor will start when needed.
2. Check that cord is plugged in securely.
3. Check that circuit matches compressor requirements.
4. Reset circuit breaker, or have outlet serviced by a qualified technician.
5. Turn off Compressor and wait for it to cool down.
Press reset button. Resume operation.
6. Reset circuit or replace fuse. Check for low voltage conditions.
It may be necessary to disconnect other electrical appliances
from the circuit or move the compressor to its own circuit.
7. Use larger diameter or shorter extension cord or eliminate extension cord.
See Recommended Wire Gauge for Extension Cords in Safety section.
8. Have unit inspected by a qualified technician.
Compressor builds
pressure too slowly
1. Incorrect power supply.
2. Working environment too cold.
3. Safety valve leaking.
4. Loose fittings.
1. Check that circuit matches compressor requirements.
2. Move compressor to a warmer location.
3. Listen for air leaking from valve.
If leaking, replace with identical valve with same rating.
DO NOT SEAL OR TAMPER WITH SAFETY VALVE.
4. Reduce air pressure, then check all fittings with a soap solution
for air leaks and tighten as needed. Do not overtighten.
Compressor not
building enough
air pressure
1. Air filters need cleaning/replacing.
2. Check Valve needs service.
3. Compressor not large enough for job.
4. Loose fittings.
5. Hose or hose connections too narrow.
6. High altitude reducing air output.
1. Check inlet and outlet filters.
Clean and/or replace as needed.
2. Have technician clean or replace, as needed.
3. Check if accessory CFM is met by Compressor. If Compressor cannot
supply enough air flow (CFM),
you need a larger Compressor.
4. Reduce air pressure, then check all fittings with a soap solution
for air leaks and tighten as needed. Do not overtighten.
5. Replace with wider hose and/or hose connections.
6. Higher altitudes require compressors with greater output.
Overheating
1. Air filters need cleaning/replacing.
2. Unusually dusty environment.
3. Extension cord used.
4. Unit not on level surface.
1. Check inlet and outlet filters.
Clean and/or replace as needed.
2. Clean and/or replace filters more often or
move unit to cleaner environment.
3. Eliminate extension cord.
4. Reposition unit on a level surface.
Compressor
starts and stops
excessively
1. Loose fittings.
2. Compressor not large enough for job.
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.
Excessive noise
1. Loose fittings.
2. Unit not on 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. Reposition unit on a level surface.
Moisture in
discharge air
Too much moisture in air.
Install inline air filter/dryer, and/or relocate to less humid environment.
Safety Valve “pops”
Safety valve needs service.
Pull on test ring of safety valve. If it still pops, replace.
Air leaks from
pump or fittings
Loose fittings.
Reduce air pressure, then check all fittings with a soap solution
for air leaks and tighten as needed. Do not overtighten.
Air leaks from tank
Defective or rusted tank.
Have tank replaced by a qualified technician.
Drain moisture from tank daily to prevent future corrosion.
Follow all safety precautions whenever diagnosing or servicing the compressor.
Disconnect power supply before service.
TROUBLESHOOTING
Page 15
For technical questions, please call 1-888-866-5797.
Item 68066
