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| TROUBLE | POSSIBLE CAUSES | POSSIBLE SOLUTIONS |
| 30. Blockcage in the gun. | 1. Fusing in the gun or gun outlet. | 1. Clean the gun according to the instructions of your equipment supplier. When blocking occurs frequently check humidity of compressed air and the free-flowing properties of the powder. |
| 2. Blockage caused by contamination of the powder with dust of other coarse materials. | 2. Clean the gun according to the instructions of equipment supplier and determine the reason of this contamination. (Check powder pumps for possible impact fusion. Impact fusion particles which break off in the pump could be transported to the spray gun and result in blockage.). | |