TROUBLESHOOTING
Performing repairs may expose voltage sources, moving parts or compressed air sources. Personal injury may
occur. Prior to attempting any repairs, unplug the air compressor and bleed off all air tank air pressure.
| PROBLEM | CAUSE |
| CORRECTION | ||||
| Excessive tank | Pressure switch does not | Move On/Auto/Off lever to | |||||
| pressure - | shut off motor when | the "Off" position, if the unit | |||||
| safety valve | compressor reaches "cut- | does not shut off contact a | |||||
| pops off. | out" pressure. | Trained Service Technician. | |||||
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| Contact a Trained Service | |||||
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| Pressure switch | Technician. | |||||
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| too high. |
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| Air leaks at | Tube fittings are not tight | Tighten fittings where air can | |||||
| fittings. | enough. | be heard escaping. Check | |||||
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| fittings with soapy water | |||||
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| solution. DO NOT OVER | |||||
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| TIGHTEN. | |||||
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| Air leaks at or | Check valve seat damaged. |
| A defective check valve | ||||
| inside check |
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| results in a constant air leak | ||||
| valve. |
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| at the pressure release valve | ||||
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| when there is pressure in the | ||||
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| tank and the compressor is | ||||
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| shut off. Replace check | ||||
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| valve. Refer the "To Replace | ||||
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| or Clean Check Valve" in the | ||||
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| "Service and Adjustments" | ||||
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| section. | ||||
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| Air leaks at | Defective pressure switch | Contact a Trained Service | |||||
| pressure switch | release valve. | Technician. | |||||
| release valve. |
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| Air leaks in air | Defective air tank. | Air tank must be replaced. | |||||
| tank or at air |
| Do not repair the leak. | |||||
| tank welds. |
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| Do not drill | |
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| into, weld | |
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| or otherwise modify air | |||||
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| tank or it will weaken. The | |||||
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| tank can rupture or | |||||
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| explode. | |||||
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| Air leaks | Leaking seal. | Contact a Trained Service | |||||
| between head |
| Technician. | |||||
| and valve plate. |
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D27042 |