Troubleshooting Your Manual Powder Gun Unit: Common Problems & Solutions

-Faulty Cascade (Multiplier) In The Gun Casement
Depending on your brand and model, you might be able to pull out the cascade and visually inspect for a crack in the epoxy or a burned component. Course of action: Replace the cascade with a new one.

-The Gun Cable is Faulty
This is most likely caused by the handgun operator, under normal use of the gun, one or more of the wires in the cable can get frayed or broken. The operator might notice an intermittent on/off problem as he moves his wrist, before it completely stops working. Less frequently we are sent a gun for repair that looks like the cable was run over by a forklift. Course of action: Depending on your model, a qualified employee can cut out the bad section of the cable or replace the cable with a new one.

-Bad Ground
The parts that are intended to be sprayed are not sufficiently grounded. Course of action: Make sure hooks, racks, equipment are clean and making good contact points. Make the effort to have an excellent ground source for your equipment.

-A Problem in The Module
Possible places to inspect inside your module are as follows. Solenoid valve, transformer, circuit board, and air regulators. Course of action: Oil in the compressed air mixed with powder can cause trouble for you air regulators and solenoid valve. Take them apart and clean out the oily powder mess, being careful to reassemble correctly. With a voltmeter you can check to make sure your transformers are working properly. Inspect the PC board for damaged components. Have it replaced or repaired if anything is found.

-Main Air, Conveying Air, and Dosing (Supplementary) Air Are Set Incorrectly
Course of action: Start by adjusting your main air into the module to a mid-level setting. Write down this number and then turn off your conveying and dosing air lines. Slowly add the conveying until you get the desired amount of powder. Next increase the dosing air to smooth out the cloud. The conveying and dosing air lines usually work in opposite directions of each other. If you can’t get the desired amount of powder with the conveying maxed out, start over with a small increase in main module air, and start over with your other adjustments.

-Worn Or Dirty (Impact Fusion) Replacement Parts On The Injector Pump Or Gun
Course of action: Clean all parts of impacted powder being careful not to damage them. Relace all parts that show visible wear or when impacted powder cannot be removed safely.

-Air Leakage
Course of action: replace all worn O-rings from the hopper, pump, adapter, and gun. Replace worn airline connectors. Replace or cut back airlines and powder hose to achieve a good tight seal. Look for kinks or pin holes on your air lines and powder hose.

Take apart and inspect your gun and pump housing - clean as necessary.

Check the fluid membrane and seal in your hopper, looking for possible air leaks where the sections come together and/or the fluid air fitting. Inspect the fluid membrane for cracks and contamination, usually from oil from the compressed air on the bottom side. Clean and replace as necessary.

Depending on your specific brand, check for blown fuses, reset buttons, loose PC board connections, loose power cable, or blown components in the module.