Troubleshooting
Troubleshooting
Mechanical/Fluid Flow
Relieve pressure; page 9.
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| WHAT TO CHECK |
| WHAT TO DO |
TYPE OF PROBLEM | If check is OK, go to next check | When check is not OK, refer to this column | ||
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E=XX is displayed | 1. | Fault condition exists | 1. | Determine fault correction from table, |
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| page 13. |
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False tripping of WatchDog | 1. | Operating conditions out of | 1. | Turn pressure down. Refer to operation |
system. EMPTY is dis- |
| WatchDog parameters. Pump |
| manual for adjusting. Operate without |
played. Pump does not run. |
| output is low, see below. |
| WatchDog active; see operation manual. |
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Pump output is low | 1. | Spray tip worn | 1. | Follow Pressure Relief procedure Warn- |
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| ing, then replace tip. See your separate |
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| gun or tip manual. |
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| 2. | Spray tip clogged | 2. | Relieve pressure. Check and clean spray |
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| tip. |
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| 3. | Paint supply | 3. | Refill and reprime pump. |
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| 4. | Intake strainer clogged | 4. | Remove and clean, then reinstall |
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| 5. | Intake valve ball and piston ball | 5. | Remove intake valve and clean. Check |
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| are not seating properly |
| balls and seats for nicks; replace if neces- |
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| sary; see pump manual 310643 or |
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| 310894. Strain paint before using to |
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| remove particles that could clog pump. |
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| 6. | Suction hose connections | 6. | Tighten any loose connections. Check for |
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| missing or damaged seals. |
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| 7. | Fluid filter, tip filter, or tip is | 7. | Clean filter; see operation manual. |
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| clogged or dirty. |
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| 8. | Prime valve leaking | 8. | Relieve pressure. Repair prime valve. |
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| 9. | Verify pump does not continue to | 9. | Service pump; see pump manual 310643 |
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| stroke when gun trigger is |
| or 310894. |
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| released. (Prime valve not leak- |
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| ing.) |
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| 10. | Leaking around throat packing | 10. | Replace packings; see pump manual. Also |
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| nut which may indicate worn or |
| check piston valve seat for hardened paint |
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| damaged packings. |
| or nicks and replace if necessary. Tighten |
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| packing |
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| 11. | Pump rod damage | 11. | Repair pump. See pump manual 310643 |
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| or 310894. |
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| 12. | Low stall pressure | 12. | Turn pressure knob fully clockwise. Make |
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| sure pressure control knob is properly |
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| installed to allow full clockwise position. If |
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| problem persists, replace pressure trans- |
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| ducer. |
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| 13. | Piston packings are worn or | 13. | Replace packings; see pump manual |
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| damaged |
| 310643 or 310894. |
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311365G | 11 |
