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| TROUBLE | POSSIBLE CAUSES | POSSIBLE SOLUTIONS |
| 7. Poor charging inadequate powder build or wrap on part. | 1. High-voltage source not providing enough KV at charging electrode or grid. | 1a. Check high voltage source is on. Systematically check electrical continuity from voltage source to electrode (grid) including cable, resistors and fuses. |
| 1b. Replace missing or broken electrode (grid). | ||
| 1c. Clean electrode (grid) insulated by powder build or impact fusion. | ||
| 2. Poor ground. | 2. Check ground from conveyor rail (or rub bar when used) through hanger to part. All contact areas must be free of powder build, heavy grease and other insulating material. | |
| 3. Powder delivery (feed) is too high. | 3. Turn down powder feed until all material passing through charging corona (field) is adequately charged. | |
| 4. Excessive moisture in powder booth air. | 4. Moisture in humid air will tend to dissipate humidity in the powder spray area. | |
| 5. Powder too fine. | 5a. Too much reclaim added to virgin powder. | |
| 5b. Virgin powder pulverized too fine by manufacturer. | ||
| 6. Powder type or formula. | 6. Some resin types charge better than others and some formulas are designed for thin film application. Check with your powder supplier. | |
| 7. Powder delivery air too high. Powder blowing by part. | 7. Turn down air setting or move gun position farther away from part. | |