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| Advanced Troubleshooting |
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Specific Problem | Cause |
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Basic electrical problems | Motor overheated | Allow motor to cool for 30 minutes. Retry. | |
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| Electrical outlet is damaged | Reset building circuit breaker or replace building | |
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| fuse. Try another outlet. | |
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| Check electric supply with volt meter. Meter must | |
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| read | |
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| plug sprayer in until outlet is corrected. | |
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| Control board leads are | Replace any loose terminals. Make sure all leads | |
| improperly fastened or | and harnesses are firmly connected. | |
| improperly mated | Check pressure control harness connection on | |
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| front side of drive housing. | |
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| Clean control board terminals. Securely reconnect | |
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| leads. |
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| Motor brushes are worn. | Check length of BOTH brushes (brushes do not | |
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| wear evenly on both sides of the motor). Brush | |
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| length must be 6.4mm (0.25 in). If brushes are | |
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| worn replace motor using Motor Kit, page 18. | |
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| Motor armature commutator | Check for burn spots, gouges and extreme | |
| damaged | roughness. Have motor shop resurface | |
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| commutator if possible, or replace motor using | |
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| Motor Kit, page 18. | |
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| Motor armature shorting | Check for shorts using armature tester (growler) | |
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| or perform spin test, Motor Diagnostic, page 19. | |
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| If shorts are evident, replace motor using Motor | |
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| Kit, page 18. | |
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| Control board 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 |
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| armature can burn out a good |
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| control board. |
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Sprayer Wiring Problems | Sprayer electrical cord | 1. | Unplug sprayer electrical cord. |
NOTE: Remove enclosure | damaged | 2. | Disconnect black electrical cord wire at |
mounting screws and pull |
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| power switch |
enclosure away from drive |
| 3. | Unplug |
housing. Take care not to pull |
| 4. | Plug in electrical cord |
on leads from electrical cord |
| 5. | Test voltage between black and white |
and power switch. |
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| wires. Meter must read |
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| 6. | Replace electrical cord if no voltage. |
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| Sprayer power switch damaged | 1. | Unplug sprayer electrical cord. |
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| 2. | Disconnect black control board wire at |
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| power switch. |
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| 3. | Unplug |
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| 4. | Plug in electrical cord. |
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| 5. | Turn power switch ON. |
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| 6. | Test voltage between open terminal of |
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| power switch and white electrical cord wire. |
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| Meter must read |
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| 7. | Replace power switch if no voltage. |
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12 | 309477F |