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 | |
Excessive | Defective | • | Move the pressure switch lever to the |
tank | pressure |
| "OFF" position. If the unit doesn't shut |
pressure - | switch. |
| off, unplug. If the electrical contacts are |
safety valve |
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| welded together, replace the pressure |
pops off. | Improper |
| switch. |
| wiring. | • | If the contacts are good, check to see if |
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| the pin in the pressure release valve is |
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| stuck. If it does not move freely, replace |
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| the valve. |
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| • | Adjust or replace pressure switch. |
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Air leaks at | Fittings are | Tighten fittings where air can be heard | |
fittings. | not tight | escaping. Check fittings with a soap and | |
| enough. | water solution. DO NOT OVER TIGHTEN. | |
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Air leaks at | Defective or | A defective check valve results in a | |
or inside | dirty check | constant air leak at the pressure release | |
check | valve. | valve where there is a pressure in the tank | |
valve. |
| and the compressor is shut off. Remove | |
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| and clean or replace check valve. DO | |
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| NOT OVER TIGHTEN. | |
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Air leaks at | Defective | Contact a trained service technician. | |
pressure | pressure |
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switch | switch |
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unloader | unloader |
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valve. | valve, or |
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| defective |
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| check valve. |
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Air leaks in | Defective air | Air tank must be replaced. Do not repair | |
air tank or | tank. | the leak. WARNING DO NOT DRILL | |
at air tank |
| INTO, WELD OR OTHERWISE MODIFY | |
welds. |
| AIR TANK OR IT WILL WEAKEN. THE | |
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| TANK CAN RUPTURE OR EXPLODE. | |
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Air leaks | Blown head | Replace gasket or contact Authorized | |
between | gasket. | Service Technician. | |
head and |
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valve plate. |
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