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. 288217 Manifold TI8087b II 2 G c T6 Related Manuals Contents Related Manuals . 40 Related Manuals The Automatic Air-Assisted Airless Spray Guns manual is available in the following languages. [. . . ] Clean the front of the tip frequently during the day to reduce buildup. · · · · 311052D 15 Maintenance 7. Do not continuously soak the brush's bristles with solvent and do not use a wire brush. 12. Scrub the air cap retaining ring (8), air cap (30), and spray tip (9) with the soft-bristle brush. To clean out air cap holes, use a soft tool, such as a toothpick, to avoid damaging critical surfaces. With the gun pointed down, clean the front of the gun, using the soft-bristle brush and solvent. TI6570A 13. Install the air cap retaining ring (8), air cap (30), and spray tip (9). Point the gun down and wipe off the outside of the gun. 16 311052D Troubleshooting Troubleshooting Check all possible remedies in the troubleshooting charts before disassembling the gun. Some improper patterns are caused by the improper balance between air and fluid. Refer to Spray Pattern Troubleshooting, page 19. General Troubleshooting Problem Fluid leakage through venting holes. Replace gasket. Fluid leakage from front of gun. Fluid needle (14) dirty, worn, or dam- Clean or replace fluid needle. 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. Move plug to fluid port consistent with manifold plumbing, unless you are using gun in a circulating system. 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. 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 page 15. On defective side of pattern, air horn Clean air horn holes with solvent and holes are partially or totally plugged. 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. Using the supplied wrench (38), loosen the fluid needle setscrew (19). [. . . ] ball) Cylinder Air Pressure psi (MPa, bar) 50 (0. 34, 3. 4) 50 (0. 34, 3. 4) 50 (0. 34, 3. 4) Fluid Pressure psi (MPa, bar) 600 (4. 2, 42) 1800 (12. 4, 124) 4000 (28, 280) msec to fully open 60 60 60 msec to fully close 60 60 60 Sound Data (dBa) Air Cap Operating Part No. tip psi (MPa, bar) 4000 (28, 276) Fan Air Pressure psi (MPa, bar) 0 100 (0. 7, 7) 0 30 (0. 21, 2. 1) Atomizing Air Pressure psi (MPa, bar) 100 (0. 7, 7) 100 (0. 7, 7) 30 (0. 21, 2. 1) 30 (0. 21, 2. 1) Sound pressure measured 3. 28 feet (1 meter) from equipment. Sound Pressure dB(A) 91. 75 91. 22 83. 87 84. 41 Sound Power dB(A) 91. 90 91. 46 76. 28 78. 65 Normal Operating 600 (4. 2, 42) Pressures 311052D 39 Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. 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. [. . . ]