Troubleshooting
Troubleshooting
Mechanical/Fluid Flow
Perform Pressure Relief Procedure; page 13.
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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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For units with display: | Fault condition exists | Determine fault correction from table, | |
CODE XX is displayed. |
| page 27. | |
For units with no display: |
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ProGuard status light is |
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blinking or the light is off |
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and there is power to the |
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sprayer. |
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Pump output is low | Spray tip worn | Follow Pressure Relief Procedure on page | |
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| 13, then replace tip. See your separate gun or |
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| tip manual. |
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| Spray tip clogged | Relieve pressure. Check and clean spray tip. |
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| Paint supply | Refill and reprime pump. |
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| Intake strainer clogged | Remove and clean, then reinstall |
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| Intake valve ball and piston ball are | Remove intake valve and clean. Check balls |
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| not seating properly | and seats for nicks; replace if necessary; see |
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| pump manual. Strain paint before using to |
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| remove particles that could clog pump. |
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| Fluid filter, tip filter, or tip is clogged | Clean filter; see operation manual. |
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| or dirty. |
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| Prime valve leaking | Relieve pressure. Repair prime valve. |
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| Verify pump does not continue to | Service pump; see pump manual. |
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| stroke when gun trigger is released. |
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| (Prime valve not leaking.) |
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| Leaking around throat packing nut | Replace packings; see pump manual. Also |
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| which may indicate worn or damaged | check piston valve seat for hardened paint or |
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| packings. | nicks and replace if necessary. Tighten pack- |
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| ing |
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24 | 332916C |
