Graco 249369 - Manual

Selection Charts 6 311051F Selection Charts TERMS: Light Fluid: Up to 18 seconds with No. 2 Zahn cup (20 centipoise) Medium Fluid:19 to 28 seconds with No. 2 Zahn cup (20-64 centipoise) Heavy Fluid:Greater than 28 seconds with No. 2 Zahn cup (greater than 64 centipoise) -- 2.8 Volatile Organic Compo...

Selection Charts 311051F 7 Compliant Spray Gun Assemblies * Hardened SST needle tip/nozzle (not recommended for thin fluids). All other models have PEEK needle tip.† With Fluid Control Knob (for fine adjustment of fluid flow). Airspray Gun Assemblies * Hardened SST needle tip/nozzle (not recommended...

Selection Charts 8 311051F Proper Needle/Nozzle Selection The spray gun's needle/nozzle kits range in size to pro-vide different fluid flow rates. As a general guideline, use the fluid nozzle that will give the required flow with the needle fully triggered at a fluid pressure of 5-20 psi (0.035 MPa,...

Air Flow 311051F 9 Air Flow All tests were completed with the 0.055 in. (1.4 mm) nozzle and standard air cap for each gun model. F IG . 1: HVLP Gun Air Cap Pressure F IG . 2: Automatic Gun Air Consumption HVLP Aircap Pressures 0 1 2 3 4 5 6 7 8 9 10 11 12 0 5 10 15 20 25 30 35 40 45 50 Ma nifold Inl...

Installation 10 311051F Installation The Automatic XT spray guns were designed to produce the highest quality finish with today's fluids as well as the low V.O.C. (volatile organic compound) fluids of tomorrow. This spray gun can spray most coatings or finishes cur-rently being used for automotive, ...

Installation 311051F 11 Install Air Fittings 1. Install the supplied 1/4 in. tube fitting into the cylin-der (CYL) air port. 2. Install 3/8 in. tube fittings into the atomization (ATOM) air port and the fan (FAN) air port. Ground System The following grounding instructions are minimum requirements f...

Installation 12 311051F Mount Gun Reciprocating Arm Rod Mount To mount the gun on a reciprocating arm rod [0.5 in. (13 mm) diameter maximum]: 1. Insert the mounting bar (A) through the hole in the manifold as shown in F IG . 5. 2. Secure the gun to the bar by tightening the mount-ing screw (B). Stat...

Setup 311051F 13 Setup Connect Air Line 1. For manifolds with a separate ATOM and FAN port, the gun cylinder, fan, and atomization air must be supplied and regulated separately. For the manual fan valve manifold, only one supply line is required for both atomization and fan air. 2. Connect each air ...

Setup 14 311051F Flush Spray Gun Before running any paint through the spray gun: 1. Flush the gun with a solvent that is compatible with the fluid to be sprayed, using the lowest possible fluid pressure and a grounded metal container. 2. Perform Pressure Relief Procedure; see page 17. Position Air C...

Setup 311051F 15 Adjust Spray Pattern The spray gun fluid flow is controlled by the fluid pres-sure regulator and the fluid control knob. Use the fluid pressure regulator to adjust the general fluid flow and the fluid control knob to make precise fluid flow adjust-ments. Follow these steps to establ...

Operation 311051F 17 Operation Pressure Relief Procedure 1. Turn off all bleed type air valves and all other air and fluid supplies to the gun. 2. Trigger the gun into a grounded metal waste con-tainer to relieve air and fluid pressure. Apply Fluid The spray gun has a built-in lead and lag operation...

Daily Gun Care 18 311051F Daily Gun Care CAUTION Methylene chloride with formic or propionic acid is not recommended as a flushing or cleaning solvent with this gun as it will damage aluminum and nylon compo-nents. CAUTION Solvent left in gun air passages could result in a poor quality paint finish....

Daily Gun Care 311051F 19 General System Maintenance • Perform Pressure Relief Procedure, page 17. • Clean the fluid and air line filters daily. • Check for any fluid leakage from the gun and fluid hoses. Tighten fittings or replace equipment as needed. • Flush the gun before changing colors and whe...

Troubleshooting 20 311051F Troubleshooting General 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 22. Problem Cause S...

Troubleshooting 22 311051F Spray Pattern Troubleshooting Problem Cause Solution Fluid flow is fluttering while spraying. Fluid nozzle is not tight enough. O-ring (36) is missing or damaged. Fluid filter is clogged. Tighten fluid nozzle to 60 in-lb (6.8 N•m). Replace o-ring. Check fluid filter. Fluid...

Service 311051F 23 Service Items Needed for Service • 1/16 in. Hex Wrench - provided • 3 mm Hex Wrench • Adjustable Wrench • 4 mm Hex Wrench • Pliers • Lubricant part no. 111265; see Accessories, page 33, to order • Compatible Solvent Replace Fluid Packings and Air Seals 1. Perform Pressure Relief P...

Service 24 311051F 13. Remove all o-rings from the piston (3) and stems (T). Check that the stems are solidly in place. If they are loose, replace the entire piston assembly (3). 14. Perform the following applicable step: a. Non-circulating guns: Remove the fluid outlet port plug (19), and gasket (2...

Service 311051F 25 Reassembly 1. Non-circulating guns only: Lubricate the backup ring (20†) and o-ring (21†) and install them on the fluid outlet port plug (19). Install the plug in the fluid out-let port of the fluid housing (2). See F IG . 22. 2. All guns: Reinstall the gasket (22) in the fluid ho...

Parts 26 311051F Parts F IG . 22 SERVICE NOTES: Torque to 35-45 in-lb (4.0-5.1 N•m) Lubricate threads with anti-seize lubricant Lubricate with light-weight oil Tighten cap (4) until it bottoms out Apply semi-permanent anaerobic sealant Torque to 4-5 in-lb (0.45-0.57 N•m) Torque to 95-105 in-lb (10.7...

Parts 28 311051F Spray Gun Assemblies (all models) * Guns with stainless steel needle tip, which is not rec- ommended for thin fluids. † Guns with Fluid Control Knob. Needle Tips Gun Part No. Needle/Nozzle Kit Includes items 5 & 23 Item 5 Needle Assy. Includes item 5a Item 5a Needle Tip Pack of ...

Accessories 311051F 33 Accessories Cleaning Brush 105749 For use in cleaning gun. Lubricant 111265 One 4 oz. (113 gram) tube sanitary (non-silicone) lubri-cant for fluid seals and wear areas. Fluid Hose Parts Breakdown Alternate Nozzle Sizes Retrofit Adapter Plate 288197 The retrofit adapter plate e...

Dimensions 34 311051F Dimensions F IG . 28 TI8181a TI8104a 2.0 in. (50.8 mm) 5.3 in. (134.6 mm) Part No. 249407 Gun Shown 3.86 in. (98.0 m) 3.0 in. (76.2 mm) 1.395 in. (35.43 mm) 2.76 in. (70.1 mm) 6.41 in. (162.81 mm) with fluid control knob 0.5 in. (12.7 mm) mounting hole

Mounting Hole Layout 311051F 35 Mounting Hole Layout F IG . 29: Manifold Mounting Hole Layout TI8107a TI8181a 0.4 in.(10.2 mm) Two M5 x 0.8 x 0.25 in.(6.3 mm) holes 0.805 in. (20.5 mm) 0.187 in. (4.8 mm) 1.375 in.(35 mm) 1.750 in.(44.5 mm) Two 0.128 diameter x0.31 in. (7.8 mm) holes 2.125 in.(54 mm)...

Technical Data 311051F 37 Technical Data Loctite ® is a registered trademark of the Loctite Corporation. Triggering Speed These values apply to a new gun with a 12 ft. (3.6 m), 1/4 in. (6.3 mm) OD cylinder air line and a 0.055 in. nozzle. These values will vary slightly with use and with variations ...

All written and visual data contained in this document reflects the latest product information available at the time of publication. Graco reserves the right to make changes at any time without notice. This manual contains English. MM 311051 Graco Headquarters: Minneapolis International Offices: Bel...