GUN OPERATION TROUBLESHOOTING CHART
PROBLEM | CAUSE | SOLUTION | |
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Leakage from fluid pack- | Worn needle packing. | Replace packing assembly. See page 21. | |
ing nut. |
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Air leakage from front of | Air valve not seating properly. | Clean, service. See page 24. | |
gun. | Air stem packing too tight. | Loosen packing. See page 24. | |
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Fluid leakage from | Electrode worn or damaged. | Replace electrode. See page 18. | |
front of gun. | Worn fluid seat. | Replace fluid nozzle and/or electrode. | |
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| See page 18. | |
| Fluid packing too tight. | Adjust packing screw. See page 20. | |
| Loose fluid nozzle. | Tighten fluid nozzle. See page 10. | |
| Fluid adjusting screw not set correctly. | Adjust screw. | |
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ªOrangePeelº finish. | Insufficient air pressure. | Increase, use least air pressure needed | |
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| for good results. | |
| Fluid poorly mixed or filtered. | Remix or refilter fluid. | |
| Improper thinner being used. | Use proper thinner. | |
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Excessive spray fog. | Too much air pressure. | Reduce,use least air pressure needed | |
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| for good results. | |
| Fluid thinned too much. | Properly thin fluid. | |
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No fluid sprays from | Fluid low. | Check, add if necessary. | |
gun. | Damaged air cap. | Replace air cap. See page 10. | |
| Dirty or clogged fluid nozzle. | Clean fluid nozzle. See page 11. | |
| Damaged fluid nozzle. | Check, replace fluid nozzle. See page 10. | |
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Equipment covered | Exhaust air flow insufficient or not directed | Check for proper CFM, check baffles and | |
with fluid. | properly. | direction of air flow. | |
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| Improper distance between gun and | Adjust distance to 203±305 mm (8±12 in.). | |
| work piece. |
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Dirty air cap. | Misalignment between air cap and | Remove and clean air cap and fluid nozzle | |
| fluid nozzle. | as described in Maintenance Section under | |
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| Clean the Air Cap and Fluid Nozzle, | |
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| then reinstall them. | |
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