| Troubleshooting | |
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| What to Check | What to Do |
| If check is OK, go to next | When check is not OK, |
Problem | check | refer to this column |
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Fluid is spitting from gun | Air in pump or hose. | Check and tighten all fluid |
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| connections. Cycle pump as slowly as |
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| possible during priming. |
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| Spray tip is partially clogged. | Clear tip. See Clear Tip Clog, page |
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| 22. |
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| Fluid supply is low or empty. | Refill fluid supply. Prime pump. See |
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| pump manual. Check fluid supply |
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| often to prevent running pump dry. |
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Pump is difficult to prime | Air in pump or hose. | Check and tighten all fluid |
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| connections. Cycle pump as slowly as |
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| possible during priming. |
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| Intake valve is leaking. | Clean intake valve. Be sure ball seat |
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| is not nicked or worn and that ball |
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| seats well. Reassemble valve. |
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| Pump packings are worn. | Replace pump packings. See pump |
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| manual. |
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| Paint is too thick. | Thin the paint according to supplier |
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| recommendations. |
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Sprayer operates for 5 to 10 minutes | Pump packing nut too tight. When | Loosen pump packing nut. Check for |
then stops | pump packing nut is too tight the | leaks around throat. If necessary, |
| packings on the pump rod restrict | replace pump packings. See Pump |
| pump action and overloads the motor. | manual. |
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334530A | 31 |