Repair Interior Texture Sprayers RTX 900 & RTX 1250 311772G For Water-Based Materials Only Models: 254974 and 254975 70 psi (0.49 MPa, 4.9 bar) Maximum Fluid Working Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. Related Manuals 311777 311768 ti8867a Model 254975 Shown Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441 Copyright 2006, Graco Inc. is registered to I.S.
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 appearing in the body of the manual refer to these general warnings. When these symbols appear through the manual, refer back to these pages for a description of the specific hazard.
Warnings Warnings Electric Shock Hazard To reduce the risk of electric shock: • Be sure sprayer is adequately grounded through electrical outlet, page 6. • Use only 3-wire, extension cords. • Make sure ground prongs are intact on sprayer and extension cords. • Do not operate with cover removed. • Turn off sprayer. Follow Pressure Relief Procedure, page 6, and unplug unit, before removing any parts.
Warnings CAUTION Water or material remaining in unit when temperatures are below freezing can damage motor and/or delay pump startup. To insure water and material are completely drained out of unit: 1. Remove material line from sprayer. ti9016a 2. Tip sprayer up as shown. Before adding material or starting unit in cold weather, run warm water through pump. Before adding material to hopper, install burp guard.
Component Identification Component Identification Model 254975 Shown A H cc J U bb B V S T dd C K W L D M P N ti8939a E F R G Item Component Item Component A Handle N Burp Guard B Toolbox P Material/Air Hose C Power Cord (120V, 25 ft) Q Accessories Bag D Side Pump Access Panel (RTX 1250 Only) R Material Thickness Gauge S Nozzle (4 Total) E RotoFlex F Pump Hose Outlet T Hose Plug G Air Hose Outlet U Touch-Up Hopper (3/4 gallon) ™ II Pump (inside) H Material F
Component Identification Pressure Relief Procedure To reduce risk of injury, follow this procedure whenever you see this symbol throughout this manual, Also, perform this procedure whenever you: • Stop spraying • Check or repair any part of this system • Install or clean spray nozzle 1. Turn Power Switch OFF. Grounding and Electrical Requirements This sprayer must be grounded. Grounding reduces the risk of electrical shock by providing an escape wire for the electrical current.
Shroud Removal Shroud Removal Disassembly 8. Loosen and remove screw (70) from lower right corner of side access panel (RTX1250) only. 1. Relieve Pressure, page 6. 2. Unplug sprayer from outlet. 70 ti2810b ti8874a 3. Loosen bottom hopper fitting by hand and pull hopper up and off from handle. 9. Loosen knob (42) on side access panel and swing open door. 42 ti8871a 4. Loosen and remove 2 knobs (14) on sprayer handle (12). ti8872a 12 14 10. Use screwdriver to remove second screw (30). ti8875a 5.
Shroud Removal Reassembly 5. Replace toolbox (2) and tighten screws (30) and screw (31). 1. Angle left shroud half (5) into base and push down into place. Then replace right shroud half (7). 31 5 2 30 ti8884a 6. Tighten screws (31) on shroud. ti9015a 2. Replace and tighten second screw (30). 31 ti8882a 30 7. Spread handle bars apart and slide handle down into place. 8. Tighten 2 knobs (14) on sprayer handle (12). ti9283a 3. Swing access door down (RTX 1250) and tighten knob (42).
RotoFlex™ II Pump (RTX 900) RotoFlex™ II Pump (RTX 900) Disassemble 7. Grab pump hose (16) from side of unit and remove pump hose by hand. 1. Relieve Pressure, page 6. 16 2. Unplug sprayer from outlet. ti8949a Reassemble ti2810b 1. Bend hose (16) so colored dots on hose fittings face each other. 3. Remove Shroud, page 7. 4. Loosen and remove screw (28) on hose bracket. 28 ti9331a 2. Slide new pump hose (16) over rollers.
RotoFlex™ II Pump (RTX 1250) RotoFlex™ II Pump (RTX 1250) Disassemble 6. Loosen and remove knob (42) on hose bracket (25). 1. Relieve Pressure, page 6. 25 42 2. Unplug sprayer from outlet. ti8945a 7. Remove hose bracket (25). ti2810b 3. Loosen knob (42) on side access panel. 25 42 ti9288a ti8870a 8. Slide pump fittings over and through keyhole slots. 4. Remove screw (70) from side access panel. 70 ti8869a ti8874a 5.
RotoFlex™ II Pump (RTX 1250) Reassemble 5. Flip side access panel (13) down and tighten knob (42). 1. Bend hose (16) so colored dots on hose fittings face each other. 42 ti9331a 2. Slide new pump hose (16) in from side access panel. Move pump rollers by hand until or flip power switch to rotate rollers until they are positioned correctly with pump hose. ti8938a 6. Replace and tighten screw (70) from side access panel. 70 ti8868a 3. Replace hose bracket (25) to lock pump hose into place.
Compressor Compressor 8. Remove 4 screws (29) and lift bracket (21) off of compressor. Use Compressor Repair Kit, 288612. Disassembly 29 1. Relieve Pressure, page 6. 2. Unplug sprayer from outlet. 21 ti8877a 9. Remove shoulder bolt (49) holding pump roller in place. ti2810b 3. Remove Shroud, page 7. 4. Remove RotoFlex™ II Pump hose; page 9 or 10. 5. Unscrew and remove grounding screw (49) from compressor. 49 ti8879a 10.
Compressor Reassembly 6. Replace bracket (21) and tighten 4 screws (29). 1. Carefully position compressor back into sprayer body. Make sure piston head facing front of sprayer. 29 21 ti8877a ti8940a ti8950a 2. Replace and tighten grounding screw (49). 7. Replace grounding screw (49) and tighten onto bracket (21). 8. Replace pivot bolt (26) and nut. Use 9/16 in. socket and wrench to tighten into place. Tighten screw until spring washers are flattened. 49 ti8941a 26 3.
Piston/Cylinder Piston/Cylinder Use Piston/Cylinder Repair Kit 288609. Disassembly 8. Use flat-blade screwdriver to pry head (74) from top of valve plate (75) and cylinder (76) from bottom of valve plate (75). 9. Use 7/32 in. allen wrench to remove hex screw (87) from piston rod (77). 1. Relieve Pressure, page 6. 2. Unplug sprayer from outlet. 77 ti2810b 87 3. Remove Shroud, page 7. ti8893a 4. Remove RotoFlex™ II Pump hose; page 9 or 10. 5. Remove Compressor, page 12. 6.
Piston/Cylinder Reassembly 3. Replace three bolts (100) and use 1/2 in. socket to tighten into head (74). Torque all three bolts to 75 in-lb, then torque all bolts again to 210 in-lb. CAUTION Piston and cylinder come packaged together. Do NOT let piston and cylinder come apart. If they do, make sure you drop the piston down through the top of the cylinder and tilt the piston as you pull it through the cylinder. Do NOT push the piston up from the bottom. You could easily damage the piston gasket. 4.
Valve Plate Valve Plate 8. Use flat-blade screwdriver to pry head (74) from top of valve plate (75) and cylinder (76) from bottom of valve plate (75). Use Valve Plate Repair Kit 288610. Disassembly 1. Relieve Pressure, page 6. Reassembly 2. Unplug sprayer from outlet. 1. Replace valve plate (75) with ribs facing up toward ribs on head (74). 2. Replace three bolts (100) and use 1/2 in. socket to tighten into head (74). Torque all three bolts to 75 in-lb, then torque all bolts again to 210 in-lb. 3.
Motor Motor 8. Use a box end wrench to loosen and remove two mounting bolts (105) on motor (71). Use Motor Repair Kit 288613. Disassembly 1. Relieve Pressure, page 6. 71 2. Unplug sprayer from outlet. 105 ti8891a CAUTION Be careful not to bend or damage the cooling tube when removing it from the motor. ti2810b 9. Angle motor (71) and slide motor pulley through compressor belt to remove motor from compressor. 3. Remove Shroud, page 7. 4. Remove RotoFlex™ II Pump hose; page 9 or 10. 5.
Motor Reassembly 5. Place compressor back into vice and torque bolts as described in steps 2 and 3. 1. Angle motor pulley through compressor belt (84) and pull motor (71) into position. 6. Replace fan (72) and tighten set screw. SQ 71 72 84 ti8892a ti8890a 7. Replace Compressor; page 12. When replacing motor (71), make sure the square-shaped hole (SQ) is facing toward the outside of the compressor. This hole will be used to torque the mounting bolts. 8.
Cooling Tube Cooling Tube Use Cooler Repair Kit 288614. 6. Use 3/8 in. socket to remove screw (101) and washer (102) under cooling tube (79). 79 The cooling tube is extremely hot and can cause serious burns. Allow unit to completely cool before servicing the cooling tube. 102 101 ti8886a Disassembly 1. Relieve Pressure, page 6. 7. Use wrench to push against fitting (86) and carefully pull cooling tube (79) out. 2. Unplug sprayer from outlet. ti8952a ti2810b 8. Use 5/8 in.
Cooling Tube Reassembly 3. Rotate cooling tube around and insert free end into push-to-connect fitting. Make sure tube is fully inserted. 1. Insert new cooling tube fitting and use 5/8 in. wrench to tighten. ti8942a 2. Insert cooling tube (79) and push into new fitting (86). Make sure tube is fully seated. ti9014a 4. Replace screw (101) and washer (102) under cooling tube (79) and use 3/8 in. socket to tighten.
Idler Idler Use Idler Repair Kit 288611. Reassembly Disassembly 1. Install new compressor belt, page 17. 1. Relieve Pressure, page 6. 2. Replace new Idler (106) and tighten screw (39). 2. Unplug sprayer from outlet. 3. Replace fan (79) and tighten set screw. 4. Replace Compressor, page 12. 5. Replace RotoFlex™ II Pump hose; page 9 or 10. 6. Replace Shroud, page 7. ti2810b 3. Remove Shroud, page 7. 4. Remove RotoFlex™ II Pump hose; page 9 or 10. 5. Remove Compressor, page 12. 6.
Roller Pulley/Belt Roller Pulley/Belt Use Roller Pulley Repair Kit 288616. Reassembly Disassembly 1. Install new compressor belt (83). 1. Relieve Pressure, page 6. 2. Loop belt over roller pulley and align roller with bolt hole. 2. Unplug sprayer from outlet. 3. Use 7/32 in. allen wrench to tighten bolt (87) to 20 ± 2 ft-lb. 4. Replace Compressor, page 12. 5. Replace RotoFlex™ II Pump hose; page 9 or 10. 6. Replace Shroud, page 7. ti2810b 3. Remove Shroud, page 7. 4.
Selector Switch Knob Selector Switch Knob Use Knob Repair Kit 288756. Assembly Disassembly 1. Position new knob to point right (approximately 45° from vertical) and slide it onto exposed spline. 1. Turn selector switch knob clockwise as far as it will go. ti9280a ti9219a 2. Apply Locktite (1 drop or small amount) to knob nut and tighten with wrench. 2. Use wrench to remove nut from knob. ti9281a ti9278a 3. Pull knob straight off from sprayer.
Regulator Valve Regulator Valve Use Regulator Repair Kit 288757. Assembly Disassembly 1. Replace new regulator valve and feed through 3 holes on side of sprayer. 1. Remove Knob, page 23. 2. Remove Shroud, page 7. 3. Use wrench to push against fitting (86) and carefully pull cooling tube (79) out. ti9282a 2. Reattach two air lines. ti8952a 4. Use phillips screwdriver to remove two screws. ti9275a 3. Replace two screws and tighten with phillips screwdriver. ti9279a 5. Remove old regulator valve.
Troubleshooting Troubleshooting Problem Sprayer won’t run Pump won’t pump material Cause Power switch not on Turn switch on. No power at wall outlet Check outlet by plugging in another appliance. If appliance does not work, try another outlet. Wrong size generator Use a 3500 watt or larger generator. Refer to Generator Requirements, page 6. Breaker tripped Reset breaker. Air lock Open air valve on gun. Selector switch in wrong position Move selector switch to correct position for application.
Troubleshooting Problem Speed of application slow or slower Intermittent flow/sputtering Cause Solution Material too thick Thin material. Nozzle too small Change nozzles to a larger size. See Operation manual 311768. Too much air being used. Partially close gun air valve to reduce air flow. Pump hose worn Replace hose. Plugged or dirty gun Relieve Pressure, page 6. Clean gun. Kinked hose Unkink hose. Gun adjustment set too low Increase flow adjustment with flow adjustment nut.
Wiring Diagram Wiring Diagram 49 Green Wire (GND) White Wire 21 Power Cord Motor 40 Black Wire 49 Switch 19 ti8937a 34 Air Diagram RTX 900 RTX 1250 59 41 69 Gauge 68 55 66 56 Air Valve 55 59 81 Cylinder Cylinder Relief Valve Air Valve Regulator 84 56 53 Relief Valve 38 Manifold on Compressor 34 38 84 15 Manifold on Compressor ti9232a Air Outlet 34 15 Compressor ti8936a Compressor Air Outlet 311772G 27
Parts Parts Models 254974 and 254975 71 62 23 12 76 62 42 14 32 43 63 2 85 14 31 30 5 7 83 70 (RTX 1250) 79 (RTX 900) 82 45 77 (RTX 900) 40 25 46 85 8 ti8901c 42 15 11 28 (RTX 900) 22 29 85 10 47 37 28 47 (RTX 900) 311772G
Parts Parts Models 254974 and 254975 29 3 29 49 RTX 1250 Only 27 80 33 68 69 21 26 65 19 54 58 61 • 6 • 66 51 60 57 RTX 1250 Only • 31 59 4 78 31 36 50 49 34 16 15 35 38 • 29 52 1 311772G ti8902b 29
Parts Parts Models 254974 Ref.
Parts Parts Models 254975 Ref 1 2 3 4 5 6 7 8 10 11 12 14 15 16 19 21 22 23 25 26 27 29 30 31 32 33 34 35 36 37 38 40 42 43 46 48 Part 288386 15J600 15H069 288384 288650 277319 288382 15J671 115094 112612 288314 15H641 288336 288623 120660 15H910 15C090 288265 288515 105240 113981 117630 117633 120771 15H605 115494 288651 120236 120731 120411 289591 15J758 15J862 15D561 234147 103473 311772G Description PLATE, front, RTX TOOLBOX SUPPORT, hopper, RTX FRAME, back, RTX (painted) COVER, shroud SHIELD, botto
Parts Parts Compressor 288856 & 288651 110 100 74 75 76 117 71 87 106 105 73 72 83 108 109 86 79 77 102 87 84 ti8903a 101 Ref. 71 72 73 74 75 76 77 32 Part Description Qty.
Technical Data Technical Data Main unit power requirements Maximum fluid working pressure Maximum air working pressure Compressor specifications Compressor air displacement Generator required Electric Motor Power Cord Material hopper capacity 120 Vac, 60 Hz, 15A, 1 phase 70 psi, (4.9 bar) 50 psi, (3.5 bar) Universal motor thermally protected, oil-less 4.0 scfm at 45 psi 3500W minimum Universal AC 14 Amp 1.
Graco Standard Warranty 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 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.