TROUBLESHOOTING
Risk of Unsafe Operation. Unit cycles automatically when power is on. When servicing, you may be exposed to
voltage sources, compressed air, or moving parts. Before servicing unit unplug or disconnect electrical supply to the air compressor, bleed tank of pressure, and allow the air compressor to cool.
PROBLEM | CAUSE | CORRECTION |
Excessive tank | Pressure switch does not | Move On/Auto/Off lever |
pressure - safety | shut off motor when com- | to the "OFF" position, if |
valve pops off. | pressor reaches | the outfit does not shut off |
| pressure. | contact a Trained Service |
|
| Technician. |
| Pressure switch | Contact a Trained Service |
| too high. | Technician. |
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|
Air leaks at fit- | Tube fittings are not tight | Tighten fittings where air can |
tings. | enough. | be heard escaping. Check fit- |
|
| tings with soapy water solu- |
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| tion. Do Not Overtighten. |
Air leaks at or | Check valve seat damaged. | A defective check valve |
inside check |
| results in a constant air leak |
valve |
| at the pressure release valve |
|
| when there is pressure in the |
|
| tank and the compressor |
|
| is shut off. Replace check |
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| valve. Refer the "To Replace |
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| or Clean Check Valve" in the |
|
| "Service and Adjustment" |
|
| section. |
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|
|
Air leaks at | Defective pressure switch | Contact a Trained Service |
pressure switch | release valve. | Technician. |
release valve. |
|
|
Air leaks in air | Defective air tank. | Air tank must be replaced. |
tank or at air |
| Do not repair the leak. |
tank welds. |
| Risk of |
|
| Bursting. |
|
| Do not drill into, weld or |
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| otherwise modify air tank |
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| or it will weaken. The tank |
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| can rupture or explode. |
|
|
|
Air leaks | Leaking seal. | Contact a Trained Service |
between head |
| Technician. |
and valve plate. |
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21- ENG | A14411 |
