TROUBLESHOOTING
Performing repairs may expose voltage sources, moving parts, or compressed air sources. Personal injury may occur. Before serv- icing: 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 to | |||||
| pressure - safe- | shut off motor when com- | the “OFF” position, if the air | |||||
| ty valve pops | pressor reaches | compressor does | |||||
| off. | pressure. | not shut off, contact a | |||||
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| Trained Service Technician. | |||||
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| Pressure switch | Contact a Trained Service | |||||
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| too high. | Technician. | |||||
| 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 to the “To | ||||
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| Replace or Clean Check | ||||
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| Valve” in the “Service and | ||||
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| Adjustments” section. | ||||
| Air leaks at | Defective pressure switch | Contact a Trained Service | |||||
| pressure switch | release valve. | Technician. | |||||
| release valve. |
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| (if equipped) |
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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 | |
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| drill into, | |
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| weld or otherwise modify air | |||||
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| tank or it will weaken. The | |||||
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| tank can rupture or explode. | |||||
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| Air leaks | Leaking seal. | Contact a Trained Service | |||||
| between head |
| Technician. | |||||
| and valve plate. |
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D24910 | 24- ENG |