Instructions - Parts XHF Spray Gun 3A2799A EN For spraying viscous materials at high flow rates. For professional use only. Part No. 262854, Series A Includes an XHD™ RAC® Guard and XHD429 SwitchTip™ 7250 psi (50 MPa, 500 bar) Maximum Working Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save all instructions.
Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 System Requirements . . . . . . . . . . . . . . . . . . . . . 5 Ground the System . . . . . . . . . . . . . . . . . . . . . . . 5 Gun Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . 5 Pressure Relief Procedure . . . . . . . . . . . . . . . . . 5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
Warnings WARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • Do not operate the unit when fatigued or under the influence of drugs or alcohol. • Do not exceed the maximum working pressure or temperature rating of the lowest rated system component. See Technical Data in all equipment manuals. • Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all equipment manuals. Read fluid and solvent manufacturer’s warnings.
Operation Operation 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 (part no. 222385) are available at no charge from Graco. Pressure Relief Procedure Follow the Pressure Relief Procedure whenever you see this symbol.
Operation Operation 8. Use a full-open, full-close trigger action. Hold the gun about 14 in. (350 mm) from and at right angles to the work surface. Don’t swing the gun in an arc. Practice to find the best length and speed of stroke. To reduce the risk of component rupture, and serious injury, including fluid injection, do not exceed the gun’s 7250 psi (500 bar, 50 MPa) maximum working pressure or the maximum working pressure of lowest rated component in the system. Adjust the Spray Pattern 1.
Operation Gun Care If the spray tip clogs while spraying 1. Stop spraying immediately. • To reduce the risk of fluid injection or splashing in the eyes or on the skin, do not point gun at anyone or at any part of the body 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” material; this is not an air spray gun.
Operation Flush the Gun 7. Now trigger the gun into the flushing fluid supply pail. Circulate the fluid until the system is thoroughly flushed. 8. After gun is thoroughly flushed, relieve pressure. To reduce the risk of serious injury, including splashing fluid in the eyes or on the skin, or static electric discharge when flushing: • Be sure the entire system, including flushing pails, is properly grounded. • Remove the tip guard and spray tip.
Service Service 3. Unscrew the valve seat (2a). Remove the gasket (2b). See FIG. 6. 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. 2a 2b Disassembly for Repair or Cleaning NOTE: If replacing only the needle and seat, step 4 and 5 are not required. However, removing them allows you to clean the gun more thoroughly. ti19270a 1. Relieve pressure. FIG. 6 2.
Service 5. Loosen the setscrew (15) then remove the fluid housing (22) from the gun body (1). See FIG. 8. 1 8. Clean all parts and cavities thoroughly with a compatible flushing fluid. Dry with a rag or compressed air. Replace any parts that are worn or damaged. Reassembly 1. Lightly grease the inner cavities of the fluid housing (22). Install the small seal (2e) so the lips face into the fluid housing cavity. Install the seal retainer (2d) and torque to 30-40 in-lb (3.4-4.5 N•m). See FIG. 11.
Service 3. Place the gasket (2b) on the valve seat (2a). Grease the threads of the valve seat (2a) then install into the fluid housing (22). Torque to 20-25 ft-lb (27-34 N•m). See FIG. 13. 5. If the spring (19) was removed, grease the spring adjuster (20) and place the spring on the adjuster then drop into the gun body (1). See FIG. 15. 2a 19 2b 20 22 1 ti19280a ti19278a FIG. 15 FIG. 13 4. Install the spring guide (16) and seat it against the needle.
Service 7. Position the trigger (24) on the gun body. Insert the pivot pin (23) into the top hole (A) and secure with the screw (13) on the other side. Ensure there is an e-clip (26) on one end of the trigger pin (18). Slide the pin through lower trigger holes and through the slot (B) in the spring guide (16) -- turn the spring guide to align, as needed. Install the other e-clip (26) onto pin. See FIG. 17. 13 A 26 B,16 Test the Gun After Service 1. Lock the gun trigger lock. Connect a hose to the gun.
Parts Parts 13 19 17 21 20 23 26 2d 22 2e 1 2c 8 1 16 17 2b 18 2a 26 15 25 9 24 ti19282a 1 Ref 1 2 2a 2b 2c 2d 2e 8 9 13 15 16 17 18 19 Part --237260 ----------XHD429 XHD001 203953 102207 189960 112729 189958 112727 3A2799A Description BODY, gun KIT, needle and seat SEAT, valve GASKET NEEDLE RETAINER, seal SEAL SwitchTip, size 429 KIT, RAC Guard SCREW, hex head, 10-24 SETSCREW, 1/4-20 GUIDE, spring SETSCREW, socket head PIN, trigger SPRING Must install as shown with the notch on the
Parts Needle and Seat Kits The needle and seat are available only in kits that include items 2a through 2e. The standard non-diffused needle and seat kit, 237260, includes all OEM parts and has the number 125 stamped on the needle and seat. It is recommended for use with mastics, sealers and other high viscosity materials which have fillers that cannot easily pass through a diffuser. The optional needle and seat kit, 237398, has the number 090 stamped on the needle and seat.
Technical Data Technical Data Maximum Working Pressure . . . . . . . . . . . . . . . . . . . . . 7250 psi (50 MPa, 500 bar) Fluid orifice size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.125 in. (3.2 mm) Inlet size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8 npt(m) Weight (includes tip and tip guard) . . . . . . . . . . . . . . . . 23.2 oz (720 g) Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.25 in.
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.
