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manual abstract
Always thoroughly clean the spray gun after each use. to clean the spray gun: 1. spray a small amount of cleaning solvent through the gun. note: Check with local laws regarding this practice. If you are spraying on a regular basis, spraying solvents into the air may be illegal. A cabinet style spray gun cleaner may be required. 2. disConneCt sprAy gun FroM Air! 3. remove the cup and cup lid, then disassemble the gun by unscrewing the fluid control knob and removing the spring and needle (see figure 13). Atomizing Cap needle Cup Lid Assembly Fluid Control Knob Fluid nozzle figure 13. spray gun disassembled for cleaning. 4. unscrew the atomizing cap with your fingers, then remove the fluid nozzle with a wrench. the fully disassembled gun should look like figure 13. eXplosion hazard! chlorinated solvents like 1,1,1-tricloroethane and methylene chloride (methyl chloride) can chemically react with aluminum and may explode. many parts in spray guns are made of aluminum. read solvent label carefully before using solvent. -10- Model t23092 high-pressure spray gun 5. rinse these parts thoroughly in solvent, then dry with compressed air or let air dry. do not soak the spray gun body in solvent. prolonged exposure to solvent will rapidly deteriorate the spray gun washers and seals. note: If the small holes in the atomizing cap become blocked, soak the cap in clean solvent. If the blockage still exists, clear the blockage with a small needle, taking great care to not enlarge or damage the hole. Damage to the hole will create a disrupted spray pattern. 6. use an old tooth brush and solvent to clean the inner orifice and other hard to reach areas on the outside of the gun body. 7. Wipe the gun body dry with a lint free shop towel. lubrication Lubricate the following areas shown in figure 14 with a non-silicon spray gun lubricant after each cleaning. a. Fluid Control Knob b. pattern Control c. Air Valve packing d. Atomizing Cap threads e. trigger pin Allow the lubricant to coat threads and run into the gun body to lubricate all moving parts and seals. figure 14. Lubrication locations. dCB A e Model t23092 high-pressure spray gun -11 section 7: service troubleshooting symptom possible cause solution Fluttering or spit1. dry or worn fluid nozzle seat 1. tighten fluid tip or replace ting spray. permits air to seep into fluid passage. 2. Material level too low. 3. Fluid nozzle obstructed. 4. dry needle packing. seat with new one. 2. Add material. 3. Clean. 4. Lubricate needle. uneven top or bot1. Atomizing cap holes are 1. Clear holes. tom pattern. obstructed. 2. Build-up on top or bottom of fluid nozzle. 2. Clean. 3. Build-up on atomizing cap or on needle seat. 3. Clean. right or left arc 1. Left or right side horn holes are 1. Clear holes. pattern. plugged. 2. Build-up on left or right side of fluid tip. 2. Clean. 3. Build-up of material inside atomizing cap. 3. Clean. heavy deposit of 1. the material flow exceeds the 1. Lower fluid flow. material in center. atomizing cap capacity. 2. inlet air pressure is too low. 2. increase inlet air pressure. 3. Material is too thick. 3. thin material. narrow center pat1. Fluid control turned in too far. 1. Lower fluid flow. tern. 2. inlet air pressure too high. 2. reduce inlet air pressure. 3. Fluid pressure is too low. 3. increase fluid pressure. 4. Material is too thin. 4. Adjust material. gun leaks from fluid nozzle. 1. debris will not let the needle seat with the fluid nozzle. 1. Clean or replace both. -12-Model t23092 high-pressure spray gun symptom possible cause solution no spray output. 1. no pressure at gun. 1. Check air supply. 2. Fluid passages dirty. 2. Clean gun, remove any obstructions. 3. Fluid control closed. 3. open. 4. out of paint. 4. refill. 5. Material too thick. 5. thin to manufacturer's recommendations. excessive over1. Fluid pressure too high. 1. reduce fluid pressure. spray. 2. gun is too far from surface. 2. Keep gun at recommended distance. 3. spraying too fast. 3. slow down and maintain consistent, even parallel stroke. unable to control spray fan. 1. pattern adjustment screw is not seating properly. 2. Atomizing cap is loose. 1. Clean or replace. 2. tighten atomizing cap. runs and sags. 1. damaged seal. 2. too much fluid output. 3. Keeping gun in one place too long. 1. replace damaged seal(s). 2. use fluid control to reduce flow. 3. Keep gun moving at a steady pace. Material leaks from cup. 1. Cap not secure. 2. Cup not tight on gun body. 3. Leaking from cap vent hole. 1. tighten. 2. tighten. 3. hold gun upright do not tilt. Material leaks from gun. 1. Fluid tip loose. 2. dry or damaged seals. 3. excessive pressure. 1. tighten. 2. replace seals. 3. reduce pressure. thick dimpled fin1. holding gun too close to sur1. spray at recommended disish: orange peel face. tance. appearance. 2. inlet air pressure too low. 3. Material not properly mixed. 4. surface is dirty or oily. 2. Check inlet air pressure. 3. Follow manufacturer's instructions. 4. More surface prep...