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 AIR COMPRESSOR AND BLEED OFF ALL AIR TANK AIR PRESSURE.
PROBLEM | CAUSE | CORRECTION |
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Excessive tank | Pressure switch does not shut | Move the pressure switch lever to | |
pressure - safety | off motor when compressor | the “OFF” position. If the unit | |
valve pops off. | reaches | doesn’t shut off, and the electrical | |
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| contacts are welded together, | |
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| replace the pressure switch. | |
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| Contact an authorized service | |
| Pressure switch | center to check and replace | |
| high. | pressure switch. |
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Air leaks at fittings. | Tube fittings are not tight | Tighten fittings where air can be | |
| enough. | heard escaping. Check fittings with | |
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| soapy water solution. DO NOT | |
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Air leaks at or inside | Malfunctioning or dirty check | A malfunctioning | check valve |
check valve. | valve. | results in a constant air leak at the | |
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| pressure release valve when | |
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| pressure is in the tank and the | |
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| compressor is shut off. Drain tank | |
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| then remove and clean or replace | |
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| check valve. DO NOT OVER- | |
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| TIGHTEN. |
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Air leaks at pressure | Malfunctioning pressure switch | Remove and replace the release | |
switch release valve. | release valve. | valve. |
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| Malfunctioning check valve. | A malfunctioning | check valve |
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| results in a constant air leak at the | |
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| pressure release valve when | |
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| pressure is in the tank and the | |
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| compressor is shut off. Drain tank | |
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| then remove and clean or replace | |
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| check valve. DO NOT OVER- | |
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| TIGHTEN. |
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Air leaks in air tank or | Damaged air tank. |
| DO NOT |
at air tank welds. |
| DRILL INTO, WELD OR | |
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| OTHERWISE MODIFY AIR | |
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| TANK OR | IT WILL |
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| WEAKEN. THE TANK CAN | |
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| RUPTURE OR EXPLODE. | |
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| TANK MUST BE RE- | |
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| PLACED. |
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Air leaks between | Leaking | Torque head screws to 8 | |
head and valve |
| this does not stop leak, replace o- | |
plate. |
| ring. |
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