OWNERS MANUAL | TROUBLESHOOTING GUIDE |
TROUBLESHOOTING GUIDE
PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES, MOVING PARTS OR COM- PRESSED 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 - | Defective pressure switch. | Move the pressure switch |
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| safety valve pops off. |
| lever to the "OFF" position. If |
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| the unit doesn't shut off, |
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| unplug. If the electrical |
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| contacts are welded together, |
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| replace the pressure switch. |
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| Improper wiring. | If the contacts are good, check |
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| to see if the pin in the pressure |
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| release valve is stuck. If it |
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| does not move freely, replace |
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| the valve. |
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| Adjust or replace pressure |
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| switch. |
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| Air leaks at fittings. | Fittings are not tight enough. | Tighten fittings where air can |
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| be heard escaping. Check |
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| fittings with a soap and water |
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| solution. |
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| DO NOT OVER TIGHTEN. |
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| Air leaks at or inside check | Defective or dirty check valve. | A defective check valve results |
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| valve. |
| in a constant air leak at the |
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| pressure release valve where |
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| there is a pressure in the tank |
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| and the compressor is shut off. |
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| Remove and clean or replace |
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| check valve. |
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| DO NOT OVER TIGHTEN. |
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| Air leaks at pressure switch | Defective pressure switch | Contact a trained service |
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| unloader valve. | unloader valve, or defective | technician. |
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| check valve. |
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| Air leaks in air tank or at air | Defective air tank. | Air tank must be replaced. Do |
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| tank welds. |
| not repair the leak. WARNING |
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| DO NOT DRILL INTO, WELD |
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| OR OTHERWISE MODIFY |
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| AIR TANK OR IT WILL |
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| WEAKEN. THE TANK CAN |
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| RUPTURE OR EXPLODE. |
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| Air leaks between head and | Blown head gasket. | Replace gasket or contact |
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| valve plate. |
| Authorized Service Technician. |
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MAKITA - MAC700 / MAC2400 / MAC5200 | 15 |