Troubleshooting
Troubleshooting
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Some solutions require disassembling gun. Always relieve system pressure and disconnect electrical cable before performing these procedures.
Problem | Cause(s) | Solution(s) |
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Material leaks from front of gun body | Seat or packing is worn | Replace seat (6) or packing (47). |
| Obstruction inside gun | Remove seat (6). Check and replace |
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| if necessary. |
| Worn needle | Check and replace needle (4a) if nec- |
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| essary. |
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Material leaks from back of gun body | Needle seal or packing is worn | Replace seals (4c) or packing (4d). |
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Gun does not shut off | Needle or seat is worn | Replace needle (4a) or seat (6). |
| Spring is broken or not installed cor- | Check and replace spring (14) if nec- |
| rectly | essary. |
| Obstruction inside gun | Remove seat (6). Check and replace |
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| if necessary. |
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Gun does not heat material | Loose heater wires | Check and reconnect wire connec- |
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| tions. |
| Loose sensor wires | Check and reconnect wire connec- |
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| tions. |
| Heater cartridge failed | Replace failed heater. |
| Sensor failed | Replace failed sensor. |
| Temperature controller failed | Refer to |
| No power to heating circuitry | 311208 as appropriate. |
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10 | 311209J |