Westward Operating Instructions and Parts Manual | Model 3JR70A |
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Portable Air Compressor
Voltage sources, moving parts, or compressed air sources are exposed when repairing the compressor.
Personal injury can occur. Unplug the compressor before attempting any repairs.
Troubleshooting Chart
Symptom (s) | Possible Causes (s) | Corrective Actions (s) | ||
Excessive tank | 1. | Pressure switch does | 1. | Move On/Auto/Off lever |
pressure - safety |
| not shut off motor when |
| to the "OFF" position. If |
valve pops off. |
| compressor reaches |
| the outfit does not shut |
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| off contact a trained | |
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| service technician. |
| 2. | Pressure switch "cut- | 2. | Contact a trained service |
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| out" too high. |
| technician. |
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Air leaks at | 1. | Tube fittings are not | 1. | Tighten fittings where air |
fittings. |
| tight enough. |
| can be heard escaping. |
Check fittings with soapy water solution. Do Not
Overtighten.
Air leaks in air | 1. Defective air tank. |
tank or at air |
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tank welds. |
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Air leaks | 1. | Leaking seal. |
between head |
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and valve plate. |
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Air leak from | 1. | Possible defect in |
safety valve. |
| safety valve. |
1.Air tank must be replaced. Do not repair the leak.
Do not drill into,
weld or otherwise modify air tank or it will weaken. The tank can rupture or explode.
1.Contact a trained service technician.
1.Operate safety valve manually by pulling on ring. If valve still leaks, it should be replaced.
Knocking Noise. 1. Possible defect in safety valve.
1.Operate safety valve manually by pulling on ring. If valve still leaks, it should be replaced.
16- ENG