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SPRAY GUN CLEAN PROCEDURE
- Clean the spray gun passage with solvent until no paint residuals are found.
- Dismantle air nozzle and fluid needle after each operation. Be sure to dismantle fluid needle then air nozzle in order.
- Immerse fluid needle and air nozzle in the solvent then clean the parts with brush.
- Do not submerge entire spray gun in solvent.
- Clean the air cap with brush.
- Dry the cleaned parts and gun body with air duster.
- Assemble fluid nozzle first, then fluid needle. Reversible assembly may damage fluid nozzle and fluid needle.
| TROUBLE | CAUSE | CORRECTION |
|---|---|---|
Fluttering |
a. Insufficient material in cup. b. Dry or worn fluid needle packing
c. Loose or damaged fluid nozzle.
|
a. Refill material. b. Lubricate or replace fluid needle
c. Tighten or replace fluid nozzle.
|
Crescent |
a. Dirty or damaged fluid nozzle. b. Material build-up on air cap.
|
a. Clean or replace fluid nozzle. b. Clean or replace air cap.
|
Heavy top or bottom |
a. Dirty or damaged fluid nozzle. b. Material build-up on air cap.
|
a. Clean or replace fluid nozzle. b. Clean or replace air cap.
|
Split |
a. Material too thin or not enough. b. Atomizing air pressure too high.
|
a. Increase material viscosity. b. Reduce air pressure.
|
Heavy Center |
a. Material too thick or too much. b. Atomizing air pressure too low. c. Pattern adjusting set closed.
|
a. Reduce material viscosity. b. Increase air pressure. c. Adjust pattern adjusting set.
|
| Dripping fluid from fluid nozzle |
a. Obstructions between fluid nozzle
b. Worn fluid nozzle or needle. |
a. Clean fluid needle and fluid nozzle
b. Replace components.
|
| Fluid leaks from needle packing screw |
a. Loose fluid needle packing screw. b. Dry or worn fluid needle packing. |
a.Tighten fluid needle packing screw,
b. Lubricate or replace.
|