GUN OPERATION TROUBLESHOOTING CHART
PROBLEM | CAUSE | SOLUTION | |
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Leakage from fluid pack- | Worn needle packing. | Replace packing assembly. | |
ing nut. |
| See page 20. | |
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Air leakage from front | Air valve not seating properly. | Clean, service. See page 24. | |
of 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 12. | |
| Cylinder air to gun not completely shut off. | Adjust screw. | |
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ªOrange Peelº finish. | Insufficient air pressure. | Increase, use least air pressure | |
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| needed 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 | |
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| needed 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 12. | |
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| Dirty or clogged fluid nozzle. | Clean fluid nozzle. See page 12. | |
| Damaged fluid nozzle. | Check, replace fluid nozzle. | |
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| See page 12. | |
| Air Valve not actuating. | Check cylinder air, fluid needle packing, | |
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| and needle. Replace parts as necessary. | |
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| See page 21. | |
| Damaged fluid needle | Replace. See page 20. | |
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Equipment covered | Exhaust air flow insufficient or not directed | Check for proper CFM, check baffles | |
with fluid. | properly. | and direction of air flow. | |
| Improper distance between gun and | Adjust distance to 203±305 mm | |
| work piece. | (8±12 in.). | |
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Dirty air cap. | Misalignment between air cap and | Remove and clean air cap and fluid | |
| fluid nozzle. | nozzle as described on page 12, then | |
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| reinstall them. | |
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