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| Advanced Troubleshooting | |
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Specific Problem | Cause | Solution | |
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Sprayer Wiring Problems | Motor thermal overload cutoff | 1. Unplug sprayer electrical cord. | |
(cont.) | switch damaged. | 2. Remove motor harness from control card | |
| Thermal Overload, page 7. | 3. Check for continuity between yellow leads | |
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| or motor harness. | |
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| 4. If thermal relief switch is open (no continu- | |
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| ity) allow motor to cool. | |
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| 5. If switch remains open after motor cools, | |
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| replace motor using Motor Kit, page 18. | |
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| 6. If thermal relief switch closes after motor | |
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| cools, find correct cause of overheating. | |
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| Terminals are damaged or | Replace any damaged terminals. Make sure all | |
| loose | terminal connections are tight. | |
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General Problem: Circuit Breaker is Tripping |
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Specific Problem | Cause | Solution | |
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Building circuit breaker opens | Sprayer electrical wiring is | Repair or replace any damaged wiring or | |
as soon as sprayer is turned on | pinched or insulation is | terminals. Securely reconnect wires. | |
| damaged. |
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| Wires between pressure |
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| control switch and control |
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| board are pinched |
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| Motor armature is shorting | Check for shorts using armature tester (growler) | |
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| or perform spin test, Motor Diagnostics, page | |
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| 19. If shorts are evident, replace motor using | |
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| Motor Kit, page 18. | |
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| Control board is damaged. | See Control Board Diagnostics, page 19. | |
| CAUTION: Do not perform | Replace control board if damaged using Control | |
| control board diagnostics until | Board Kit, page 18. | |
| you have determined the |
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| armature is good. A bad motor |
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| armature can burn out a good |
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| motor control board. |
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309477F | 13 |
