TROUBLESHOOTING GUIDE
PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES, MOVING PARTS OR COMPRESSED AIR SOURCES. PERSONAL INJURY MAY OCCUR. PRIOR TO ATTEMPTING ANY REPAIRS, UNPLUG THE COMPRESSOR AND BLEED OFF TANK AIR PRESSURE.
PROBLEM | CAUSE | CORRECTION |
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Excessive tank pressure - safety | Pressure switch does not shut off motor | Move the pressure switch lever to the “OFF” position. |
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valve pops off. | when compressor reaches | If the unit doesn’t shut off, and the electrical contacts |
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| pressure. | are welded together, replace the pressure switch. |
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| If the contacts are good, check to see if the pin in the |
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| bottom of the pressure release valve is stuck. If it does |
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| not move freely, replace the valve. |
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| Pressure switch | Return the unit to an authorized dealer to check and |
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| adjust, or replace switch. |
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Air leaks at fittings. | Tube fittings are not tight enough. | Tighten fittings where air can be heard escaping. |
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| Check fittings with soapy water solution. DO NOT |
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Air leaks at or inside check valve. | Defective or dirty check valve. | A defective check valve results in a constant air leak at |
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| the pressure release valve where there is pressure in |
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| the tank and the compressor is shut off. Remove and |
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| clean or replace check valve. DO NOT |
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Air leaks at pressure switch | Defective pressure switch release valve. | Remove and replace the release valve.. |
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release valve. |
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| Defective check valve. | A defective check valve results in a constant air leak at |
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| the pressure release valve when there is pressure in the |
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| tank and the compressor is shut off. DO NOT OVER- |
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| TIGHTEN. |
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Air leaks in air tank or at air tank | Defective air tank. | Air tank must be replaced. Do not repair the leak. |
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welds. |
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| DO NOT DRILL INTO, WELD OR OTHERWISE |
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| MODIFY AIR TANK OR IT WILL WEAKEN. THE |
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| TANK CAN RUPTURE OR EXPLODE. |
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Pressure reading on the regu- | It is normal for “some” pressure drop to | If there is an excessive amount of pressure drop when |
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lated pressure gauge drops | occur. | the accessory is used, adjust the regulator following |
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when an accessory is used. |
| the instructions on page 8. |
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| NOTE |
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| Adjust the regulated pressure under flow |
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| conditions (while accessory is being used). |
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D23708 | |
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