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Instructions - Parts List
AA Series Spray Gun
311001C
For air-assisted spraying and finishing of paints and coatings.
Important Safety Instructions:
Read all warnings and instructions in this manual. Save
these instructions.
See page 2 for List of Models and Table of Contents.
Model G15 TI6553A
TI7204B
Model G40 TI6844A Model G40 w/RAC tip
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
II 2 G
Copyright 2005, Graco Inc. is registered to I.S. EN ISO 9001
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Models Contents Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Clearing a clogged RAC tip . . . . . . . . . . . . . 16 Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 General Troubleshooting . . . . . . . . . . . . . . . . . . 18 Installation . . . . . . . . . . . . . . . . . . . . . . .
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Related Manuals Related Manuals This manual is available in the following languages: Manual Language 311001 English 311145 Chinese 311146 Danish 311147 Dutch 311148 Finnish 311149 French 311150 German 311151 Italian 311152 Japanese 311153 Korean 311154 Norwegian 311155 Polish 311156 Russian 311157 Spanish 311158 Swedish 311001C 3
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Warnings Warnings The following are general warnings related to the setup, use, grounding, maintenance, and repair of this equipment. Additional, more specific warnings may be found throughout the body of this manual where applicable. Symbols that appear in the body of the manual refer to these general warnings. When these symbols appear throughout the man- ual, refer back to these pages for a description of the specific hazard. WARNING FIRE AND EXPLOSION HAZARD Flammable fumes, such as solv
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Warnings WARNING PRESSURIZED ALUMINUM PARTS HAZARD Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical reaction and equipment rupture, and result in death, serious injury, and property damage. TOXIC FLUID OR FUMES HAZARD Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swallowed. Read MSDS
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Installation Installation Typical Installation Grounding The typical installation shown in FIG. 1 is only a guide for selecting and installing air-assisted spray systems. Con- tact your Graco distributor for assistance in designing a system to meet your needs. Check your local electrical code and pump manual for detailed grounding instructions. Use only electrically conductive fluid hoses. Ground the spray gun through connection to a prop- VENTILATE THE SPRAY BOOTH erly grounded fluid suppl
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Installation Air Line Fluid Line 1. Install an air filter (A) on the gun air line to ensure a Before connecting the fluid line, blow it out with air dry, clean air supply to the gun. Dirt and moisture and flush it with solvent. Use solvent which is com- can ruin the appearance of your finished workpiece. patible with the fluid to be sprayed. See FIG. 1. If better control of fluid pressure is needed, install a 2. Install an air pressure regulator (C) on the gun air fluid regulator on the f
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Setup Setup Flush Before Using Equipment 1. The equipment was tested with lightweight oil, which is left in the fluid passages to protect parts. To avoid contaminating your fluid with oil, flush the equipment with a compatible solvent before using the equip- ment. See Flushing and Cleaning, page 14. 2. Relieve the pressure. See Pressure Relief Proce- dure, page 10. TI6558A Select a Spray Tip and Air Cap FIG. 6 The fluid flow and pattern width depend on the size of the spray tip, the fluid v
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Setup ® Reverse-A-Clean (RAC) Tip ® Insert the gasket seat. Model 249238 guns use a Reverse-A-Clean (RAC) tip. To assemble the RAC tip, insert the seat housing into the air cap assembly. TI7198A FIG. 10 TI7196A Screw the RAC tip assembly onto the gun and tighten FIG. 8 firmly by hand. Insert the SwitchTip. TI7199A TI7197A FIG. 11 FIG. 9 311001C 9
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Operation Operation 5. Hold a metal part of the gun firmly to a grounded Safety metal pail. Trigger the gun to relieve pressure. See FIG. 12. SKIN INJECTION HAZARD Remember, this is not an air spray gun. For your safety be sure to read and follow the Warnings on pages 4 and 5 and throughout the text of this instruc- tion manual. Keep the wallet sized warning card (222385), pro- vided with the gun, with the operator of this equip- TI6555A ment at all times. The card contains important FIG.
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Operation 2. Trigger the gun to check the atomization; do not be How the Air-Assisted Spray Gun concerned about the pattern shape yet. Operates 3. Slowly increase the fluid pressure, just to the point The air-assisted spray gun combines airless and air where a further increase in fluid pressure does not spraying concepts. The spray tip shapes the fluid into a significantly improve fluid atomization. fan pattern, as does a conventional airless spray tip. Air from the air cap further atomiz
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Operation 1. To achieve the best results when applying fluid, HVLP Operation keep the gun perpendicular to the surface and main- tain a consistent distance of approximately 8 to 12 in. (200 to 300 mm) from the object being sprayed. For HVLP operation, the atomization air must not exceed 10 psi. Use HVLP Verification Kit 249140 to 2. To obtain an even finish, use smooth, even strokes verify air psi. across the object being sprayed with 50% overlap. There is no fan adjustment when using RAC
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Daily Gun Care, Flushing, and Cleaning Daily Gun Care, Flushing, and Cleaning CAUTION Methlyene chloride with formic or propionic acid is not recommended as a flushing or cleaning solvent with SKIN INJECTION HAZARD this gun as it will damage aluminum and nylon compo- nents. Follow the Pressure Relief Procedure on page 10 before cleaning the gun. CAUTION Solvent left in gun air passages could result in a poor quality paint finish. Do not use any cleaning method which may allow solvent into th
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Daily Gun Care, Flushing, and Cleaning General System Maintenance Flushing and Cleaning 1. Relieve the pressure, page 10. 2. Clean the fluid and air line filters daily. 3. Check for any fluid leakage from the gun and fluid FIRE AND EXPLOSION HAZARD hoses. Tighten fittings or replace equipment as Read Warnings, page 4. Follow Grounding needed. instructions, page 6. 4. Flush the gun before changing colors and whenever you are done operating the gun. Flush before changing colors, before flui
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Daily Gun Care, Flushing, and Cleaning 4. Connect the solvent supply hose (T) to the gun. CAUTION Trigger the gun whenever you tighten or remove the diffuser (5). This keeps the needle ball away from the seating surface and prevents the seat from being damaged. 9. If it is necessary to remove the diffuser (5) to clean, trigger the gun while you remove the diffuser with T the gun tool (30). 10. Dip the end of a soft-bristle brush into a compatible TI6557A solvent. Do not continuously soak t
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Daily Gun Care, Flushing, and Cleaning 16. After cleaning the gun, lubricate the following parts with lubricant 111265 weekly: Trigger pivot pin (A) Boss on both sides of the gun where the trigger contacts the gun body (B) Fluid needle shaft, behind trigger (C) A B TI6570A C FIG. 24 13. If the diffuser was removed, trigger the gun while you reinstall the diffuser (5) with the gun tool (30). Tighten the diffuser securely to obtain a good seal. TI6553A Torque to 155-165 in-lb (18-19 N
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Daily Gun Care, Flushing, and Cleaning Rotate the SwitchTip. Engage the trigger lock. ENGAGED TI6581A TI7200A FIG. 32 FIG. 29 Return the SwitchTip to its original position. Disengage the trigger lock. DISENGAGED TI7201A TI6582A FIG. 30 FIG. 33 Trigger the gun into a pail to clear the clog. Disengage the trigger lock and continue spraying. SKIN INJECTION HAZARD Do not point gun at anyone or at any part of the body. DISENGAGED TI6582A FIG. 34 TI7202A FIG. 31 311001C 17
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Troubleshooting Troubleshooting Check all possible remedies in the trouble- shooting charts before disassembling the gun. Some improper patterns are caused by the SKIN INJECTION HAZARD improper balance between air and fluid. Follow Pressure Relief Procedure on page 10. Read warnings, page 4. General Troubleshooting Problem Cause Solution Fluid leakage from back of fluid Worn packings or needle shaft. Replace needle assembly (2). packing area. Air leakage from gun. Air valve not seating pr
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Troubleshooting Problem Cause Solution Fluttering or spitting spray. Insufficient fluid supply. Adjust fluid regulator or fill fluid supply tank. Air in paint supply line. Check, tighten pump siphon hose connec- tions, bleed air from paint line. Attempting to “feather” (partially Cannot “feather” with an AA gun. Feather will trigger the gun). cause drastic reduction of pressure at the tip, resulting in poor atomization and/or spitting. Striping spray. Spray tip partially plugged. Clean or repl
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Repair Repair Items Needed for Service 1 4 Seal Installation Tool (28)-- provided Nut Driver Tool (29) -- provided Gun Tool (30) -- provided C O-ring Pick 1 A 7/32 in. Hex Wrench 3/16 in. Hex Wrench Compatible Solvent 1 Torque to 90 in-lb Lubricant (part number 111265) (10.5 Nm). Repair Kits TI6576A FIG. 35 Seal Repair Kit 249422 is available. For best results, use all the new parts in the kit. Kit parts are marked with an asterisk, for example (7*). Complete Gun Packing Repa
