
Troubleshooting
PROBLEM | CAUSE | SOLUTION |
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Fluid pressures not balanced | Fluid viscosities not equal | Adjust A and B temperature settings |
between A and B side |
| to balance viscosity. Sometimes nor- |
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| mal if pressure offset is below 200 psi |
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| (14 bar) |
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| Preheat material in drums by recircu- |
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| lating; see Operation manual |
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| Inlet | Clean inlet filter screen |
| pressure side |
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| Gun port or filter plugged on high | Clean or replace; see gun manual |
| pressure side |
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| Pump inlet ball not seating or sticking | Clean seating; see pump manual |
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| Drum fluid outlet supply hose too | Use 3/4 in. (1.9 cm) ID hose with |
| small | short length |
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| Low side feed pump not working | Turn on or repair feed pump |
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| Pressure Relief/Spray valve leaking |
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| back to supply |
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Pump does not reverse direction | Obstruction of air motor or pumps | Check and clear obstruction |
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Unequal fluid pressure between | Feed pumps boost pressure on up | Reduce feed pump pressures |
UP/DOWN stroke | stroke. |
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Air motor doesn’t move with air pres- | Damaged air valve | Replace or service air valve. See Air |
sure applied |
| Motor manual. |
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| Damaged pilot valve | Replace valve. See Air Motor man- |
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| ual. |
| Park valve left open or leaking | |
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Pump movement speed is erratic | Worn air motor seals | Replace seals. See Air Motor man- |
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| ual. |
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| Worn pump seals | Replace seals; see Pump manual. |
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Electronics
Problem | Cause | Solution |
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| Plug in power cord. |
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| No power. | Turn disconnect ON | . |
Display does not illuminate. |
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| Low voltage. | Ensure input voltage is within specifi- | |
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| cations, page 36. |
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| Loose wire. | Check connections, page 36. | |
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| Display disconnected. | Check cable connections, page 36. | |
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| Display disconnected. | Check cable connections, page 36. | |
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| Display cable damaged or corroded. | Clean connections; replace cable if is | |
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| damaged. |
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Temperature display does not |
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illuminate. |
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3A1570A | 17 |