Troubleshooting
Hose Heat System
PROBLEM | CAUSE | SOLUTION | |
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| Ambient temperature is too cold. | Use auxiliary hose heat system. | |
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Hose heats but heats slower than | FTS failed or not installed correctly. | Check FTS, page 11. | |
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usual or it does not reach tempera- | Low supply voltage. | Verify line voltage. Low line voltage | |
ture. | |||
| significantly reduces power available | ||
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| to hose heat system, affecting longer | |
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| hose lengths. | |
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| A and B setpoints too low. | Increase A and B setpoints. Hose is | |
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| designed to maintain temperature, | |
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| not to increase it. | |
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| Ambient temperature is too cold. | Increase A and B setpoints to | |
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| increase fluid temperature and keep | |
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| it steady. | |
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Hose does not maintain temperature | Flow too high. | Use smaller mix chamber. Decrease | |
while spraying. |
| pressure. | |
Hose was not fully preheated. | Wait for hose to heat to correct tem- | ||
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| perature before spraying. | |
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| Low supply voltage. | Verify line voltage. Low line voltage | |
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| significantly reduces power available | |
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| to hose heat system, affecting longer | |
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| hose lengths. | |
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| A and/or B heaters are overheating | Check primary heaters for either a | |
| material. | thermocouple problem or a failed ele- | |
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| ment attached to thermocouple, page | |
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| 11. | |
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Hose temperature exceeds setpoint. | Faulty thermocouple connections. | Verify that all FTS connections are | |
| snug and that pins of connectors are | ||
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| clean. Examine connection of ther- | |
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| mocouples to long green plug on | |
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| heater control board. Unplug and | |
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| off any debris. Unplug and | |
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| long green connector on heater con- | |
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| trol board. | |
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| Faulty thermocouple connections. | Verify that all FTS connections are | |
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| snug and that pins of connectors are | |
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| clean. Examine connection of ther- | |
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| mocouples to long green plug on | |
Erratic hose temperature. |
| heater control board. Unplug and | |
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| off any debris. Unplug and | |
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| long green connector. | |
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| FTS not installed correctly. | FTS should be installed close to end | |
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| of hose in same environment as gun. | |
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| Verify FTS installation, page 32. | |
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20 | 3A1570A |
