Instructions -- Parts List Texture Airless Spray Gun 308491S 27.6 MPa (276 bar, 4000 psi) Maximum Working Pressure Part No. 241705, Series B Includes a RACr Tip Guard and LTX531 Switch Tipr Part No. 289605 (Europe Only), Series B Includes a RACr Tip Guard and HDA531 Switch Tipr Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. See page 2 for Table of Contents. 03965 GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440- 1441 Copyright 2002, Graco Inc.
Table of Contents Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Installation/Operation . . . . . . . . . . . . . . . . . . . . . . 5 System Requirements . . . . . . . . . . . . . . . . . . . 5 Ground the System . . . . . . . . . . . . . . . . . . . . . . 5 How to Use the Gun Trigger Safety . . . . . . . . 5 Pressure Relief Procedure . . . . . . . . . . . . . . . . 5 How to Use the Gun . . . . . . . . .
WARNING WARNING SKIN INJECTION HAZARD Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also cause serious injury. D Fluid injected into the skin may look like just a cut, but it is a serious injury. Get immediate surgical treatment. D Do not point the spray gun at anyone or any part of the body. D Do not put hand or fingers over the spray tip.
WARNING WARNING EQUIPMENT MISUSE HAZARD INSTRUCTIONS Equipment misuse can cause the equipment to rupture, malfunction or start unexpectedly and result in serious injury. D This equipment is for professional use only. D Read all instruction manuals, tags, and labels before operating the equipment. D Use the equipment only for its intended purpose. If you are in doubt about this, call your Graco distributor. D Do not alter or modify this equipment. D Check equipment daily.
Installation/Operation System Requirements WARNING Keep the wallet-sized warning card provided with this gun with the operator at all times. The card contains important treatment information should an injection injury occur. Additional cards are available at no charge from Graco Inc.
Installation/Operation How to Operate the Gun 6. If adjusting the pressure does not give a good spray pattern, relieve pressure and then try another tip size. WARNING To reduce the risk of component rupture, and serious injury, including fluid injection, do not exceed the gun’s 4000 psi (276 bar, 27.6 MPa) Maximum Working Pressure or the maximum working pressure of lowest rated component in the system. 7. Use a full-open, full-close trigger action. Hold the gun about 14 in.
Installation/Operation Care of the Spray Tip and Tip Guard WARNING To reduce the risk of fluid injection or splashing in the eyes or on the skin, do not hold a hand, body or rag in front of the spray tip when cleaning or checking a clogged tip. Point the gun toward the ground or into a waste container when checking to see if the spray tip is cleared. Do not try to “blow back” paint; this is not an air spray gun. Do not wipe fluid buildup off the gun or spray tip until pressure is relieved.
Installation/Operation How to Flush the Gun Always flush the pump and gun before the fluid being sprayed can dry in it. WARNING To reduce the risk of serious injury, including splashing fluid in the eyes or on the skin, or static electric discharge when flushing: NOTE: This procedure requires a grounded pail of compatible solvent. 1. Relieve pressure. 2. Remove the tip guard and spray tip. Soak and clean the parts. D Be sure the entire system, including flushing pails, are properly grounded.
Installation/Operation How to Check the Gun Diffuser Operation The Standard Needle and Seat Kit, 237398, has the number 090 stamped on the needle and seat. The seat does have a diffuser. The optional Non-diffused Needle and Seat Kit, 237260, has the number 125 stamped on the needle and seat. The seat does not have a diffuser. WARNING SKIN INJECTION HAZARD To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 5. 1.
Service WARNING 2a To reduce the risk of serious injury from fluid injection or splashing, always follow the Pressure Relief Procedure on page 5 before servicing the gun. 2b Repair Notes The needle and seat are available only as a kit which includes items 2a to 2e. The Standard Needle and Seat Kit, 237398, has the number 090 stamped on the needle and seat. 03969 Fig. 7 3. Unscrew the valve seat (2a). Remove the gasket (2b). See Fig. 7.
Service 1 2c 2e 22 2d Fig. 12 15 Fig. 10 03974 8. Remove the needle (2c). Unscrew the seal retainer (2d). Remove the seal (2e). See Fig. 12. 04736 Cleaning Clean all parts and cavities thoroughly with a compatible solvent. Dry with a rag or compressed air. Replace any parts that are worn or damage. 6. Loosen the setscrew (15). Pull the fluid housing (22) away from the gun body (1). See Fig. 10. Reassembly 1 Torque to 30--40 in-lb (3.4--4.5 N.
Service 2c 1 19 Grease this side 20 1 22 1 03676 Fig. 14 2. Lightly grease the small end of the needle (2c) and then guide it into the large end of the fluid housing (22). 1 Grease the threads 2 Torque to 20--25 ft--lb (27--34 N.m) 2a 2b Fig. 17 03979 5. If the spring (19) was removed, grease the spring adjuster (20) and place the spring. Drop this assembly into the gun body (1). See Fig. 17. 1 Torque to 30--40 in--lb (3.4--4.5 N.
Service 28 Test the Gun Before Regular Use A B,16 18 1. Lock the gun trigger safety. Connect a hose to the gun. Start and prime the pump. 29 27 2. Release the gun trigger safety. Trigger the gun into a waste container. Release the trigger to be sure the gun immediately stops spraying and that there are no leaks. 25 04732 Fig. 20 8. Position the trigger (25) on the gun body. Insert the pivot pin (28) into the top hole (A) and secure with the screw (29) on the other side.
Parts Part No. 241705, Series B Texture Airless Spray Gun 28 21 27 2e 16 19 15 20 18 2d 29 22 2a 2b 1 2c 27 17 30 25 36 24 8 Ref. No. Part No. 1 2 237680 237260 2a 2b 2c 2d 2e 8 LTX531 15 16 17 18 19 102207 189960 112729 189958 102924 HDA531 14 308491 Description Qty.
Technical Data Dimensions Fluid orifice size . . . . . . . . . . . . . . . . . 0.125 in. (3.2 mm) Inlet size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/4 npt (m) Fluid tube inside diameter . . . . . . . . 0.245 in. (6.2 mm) Sound Data: Sound Pressure Level . . . . . . . . . . . . . . . . . 84 dB(A)* Sound Power Level . . . . . . . . . . . . . . . . . . . 93 dB(A)* *Measured while spraying waterbase paint through a .031 tip at 3,000 psi (207 bar, 20.7 MPa). Per ISO 3744. Wetted parts . . .
The Graco Warranty and Disclaimers 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.
