Troubleshooting Chart (Continued)
| Symptom | Possible Cause(s) |
| Corrective Action |
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| 5. | Broken valves | 5. | Replace compressor valves as necessary. |
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| 6. | Piston ring worn | 6. | Replace piston and cylinder. |
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| Excessive moisture in | 1. | Excessive water in tank | 1. | Drain tank. |
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| discharge air | 2. | High humidity | 2. | Move to area of less humidity; use air line filter. |
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| NOTE: Water condensation is not caused by |
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| compressor malfunction. |
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| Compressor runs | 1. | Defective pressure switch | 1. | Replace switch. |
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| continuously and safety | 2. | Defective safety valve | 2. | Replace safety valve with genuine replacement part. |
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| valve opens as pressure |
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| rises |
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| Excessive starting and | 1. | Excessive condensation in tank | 1. | Drain more often. |
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| stopping (auto start) | 2. | Loose connections at fittings, tubing, | 2. | Check all connections with soap and water solution. |
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| etc. |
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| If a leak is detected, (1) tighten or (2) remove fitting |
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| and apply pipe tape to threads and reassemble. |
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| 3. | Tank leaks | 3. | Check tank for leaks with soap and water solution. If |
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| leak is detected, tank must be replaced with genuine |
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| replacement part. |
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| Do not disassemble check valve |
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| with air in tank; bleed tank |
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| Air leaking from | 1. | Check valve stuck in open position | 1. | Replace check valve. |
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| unloader valve on | 2. | Unloader valve stuck in open position | 2. | Replace unloader valve. |
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| pressure switch |
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| Do not disassemble check valve |
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| with air in tank; bleed tank |
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