Intermediate Problem Solving
TYPE OF | WHAT TO CHECK | WHAT TO DO | |||
PROBLEM | If check is OK, go to next check | When check is not OK, refer to this column | |||
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Spray pattern | 3. | Pressure adjustment potentiometer (77) by replacing | 3. | Replace potentiometer. See page 14.. | |
variations |
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(continued) |
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4. | Low Output section, page 6. |
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Motor is hot and | 1. | Determine if sprayer was operated at high pressure with | 1. | Decrease pressure setting or increase tip | |
runs intermit- |
| small tips, which causes excessive heat build up. |
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tently |
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| 2. | Be sure ambient temperature where sprayer is located is | 2. | Move sprayer to shaded, cooler area if | |
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| no more than 90_F (32_C) and sprayer is not located in |
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| direct sun. |
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| 3. | Motor. | 3. | Replace motor. See page 12. | |
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Building circuit | 1. | All electrical wiring for damaged insulation, | 1. | Repair or replace any damaged wiring or | |
breaker opens |
| and all terminals for loose fit or damage. |
| terminals. Securely reconnect all wires. | |
as soon as |
| Also check wires between pressure transducer |
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sprayer switch is |
| and motor. See page 12. |
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turned on. |
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2. | For missing motor brush inspection plate gasket (see | 2. | Correct faulty conditions. | ||
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| page 10), bent terminal forks or other metal to metal |
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| contact points which could cause a short. |
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3.Motor armature for shorts. Use an
armature tester (growler) or perform motor test. See page 9. Inspect windings for burns.
3. Replace motor. See page 12.
| 4. | Motor control board (22a) by performing motor control | 4. Replace board. See page 13. |
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| board diagnostics on page 13. If diagnostics indicate, |
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| substitute with a good board. |
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| CAUTION: Do not perform this check until motor arma- |
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| ture is determined to be good. A bad motor armature |
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| can burn out a good board |
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Circuit breaker | 1. | Basic Problems – Electrical’ on page 4. |
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opens after |
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sprayer oper- |
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ates for 5 to 10 |
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minutes. |
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Building circuit breaker opens as soon as sprayer is plugged into outlet and sprayer is not turned on.
1.ON/OFF switch (80). Be sure sprayer is unplugged! Disconnect wires from switch. Check switch with ohmmeter. The reading should be infinity with ON/OFF switch OFF, and zero with switch ON.
CAUTION: A short in motor circuit can damage switch and or motor control board (22a).
1. Replace ON/OFF switch. See page 14.
2. For damaged or pinched wires in junction box (20).
2. Replace damaged parts.
Unit will not run | 1. Generator “peak” voltage. | 1. Use AC power or a different generator. |
on generator but | Sprayer will not run if peak voltage is above 165 or be- |
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does run on AC | low 75 VAC for 232916, 232917; above 190V or below |
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power | 100V for 232910 – 232913, 232919 or above 260V or |
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| below 180V for 232918, 232915, 232914, 232665. |
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