User manual GRACO G40 311052D

[. . . ] Instructions - Parts Automatic G40 Air-Assisted Spray Guns For air-assisted spraying of paints and coatings. Approved for use in explosive atmospheres. 4000 psi (28 MPa, 280 bar) Maximum Working Fluid Pressure 100 psi (0. 7 MPa, 7 bar) Maximum Working Air Pressure See page 3 for model information. Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. 311052D ENG Part No. 288046 Spray Gun shown mounted on Part No. [. . . ] To improve sealing while spraying lightweight materials and sealing life while spraying acid catalyzed materials, use optional SST ball and plastic seat. Fluid is present at air cap holes. Spray tip is leaking, Verify that retainer (8) or RAC air cap assembly (30), are tight. Tighten diffuser-seat. Diffuser-seat (10) is insufficiently tightened. 311052D 17 Troubleshooting Problem Fluid needle will not trigger. Cause Loose or missing fluid needle stop (21) or setscrew (19). Plug (5) is in incorrect fluid port. Solution Replace stop or tighten setscrew. Replace o-ring (22) or piston assembly (20). Increase air pressure or clean air line. Move plug to fluid port consistent with manifold plumbing, unless you are using gun in a circulating system. If you are, all fluid ports in gun and on manifold should be open. Tighten piston cap until it bottoms out. Do not immerse piston in solvent Fluid does not shut off. Worn o-ring (25). Swollen piston o-ring (22). 18 311052D Troubleshooting Spray Pattern Troubleshooting Problem Fluttering spray. Solution Adjust fluid regulator or fill fluid supply tank. Check, tighten siphon hose connections, bleed air from paint line. Spitting spray. Worn diffuser-seat (10) or needle (14) ball. Inspect diffuser-seat and needle for wear. To improve sealing when spraying lightweight materials and sealing life when spraying acid catalyzed materials, use needle (SST) available with 1/8 in. See Parts, page 25. Dirty spray tip (9) or air cap (30). Fluid build-up or spray tip partially plugged. Clean. See page 15. On defective side of pattern, air horn Clean air horn holes with solvent and holes are partially or totally plugged. Pattern pushed to one side, same side of air cap gets dirty. Air horn holes partially or totally plugged. Clean air horn holes with solvent and soft brush. See page 15. 311052D 19 Service Service 4. Reference numbers marked with an asterisk (*) in the service procedures are included with the 288171 Air Seal Repair Kit. Reference numbers marked with a symbol () in the service procedures are included with the 288136 Fluid Repair Kit. [. . . ] With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco's written recommendations. This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco. [. . . ]