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Repair
Interior Texture Sprayers
RTX 900 & RTX 1250
311772H
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
US C
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Conforms to ANSI/UL
Copyright 2006, Graco Inc. is registered to I.S. EN ISO 9001
standard 1450
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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 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 Fire and Explosion Hazard Improper grounding, poor ventilation
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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. Pressurized Equipment Hazard Fluid from gun, leaks or ruptured components can spla
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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. 2. Tip sprayer up as shown. ti9016a Before adding material or starting unit in cold weather, run warm water through pump. Before adding material to hopper, install burp guard. When only a small amount of material remains in the hopper, the burp guard prevents
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Component Identification Component Identification Model 254975 Shown A H U bb cc J 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 BToolbox PMaterial/Air Hose C Power Cord (120V, 25 ft) Q Accessories Bag D Side Pump Access Panel (RTX 1250 Only) R Material Thickness Gauge ™ E SNozzle (4 Total) RotoFlex II Pump (inside) F Pump Hose Outlet T Hose Plug G Air Hose Outlet U Touch-Up Hopper (3/4 gallon) H Material Flow Gauge V Gun Plug J Material Flow Con
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Component Identification Pressure Relief Procedure Grounding and Electrical Requirements To reduce risk of injury, follow this procedure whenever you see this symbol throughout this This sprayer must be grounded. Grounding reduces the manual, Also, perform this procedure whenever risk of electrical shock by providing an escape wire for you: the electrical current. The sprayer cord includes a grounding wire with an appropriate grounding plug. The � Stop spraying plug must be plugged i
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Shroud Removal Shroud Removal 8. Loosen and remove screw (70) from lower right cor- Disassembly ner 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 9. Loosen knob (42) on side access panel and swing hopper up and off from handle. 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
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Shroud Removal 5. Replace toolbox (2) and tighten screws (30) and Reassembly 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 31 2. Replace and tighten second screw (30). ti8882a 30 7. Spread handle bars apart and slide handle down into place. 8. Tighten 2 knobs (14) on sprayer handle (12). ti9283a 12 3. Swing access door down (RTX 1250) and tighten 14 knob (42). 42 t
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RotoFlex™ II Pump (RTX 900) RotoFlex™ II Pump (RTX 900) 7. Grab pump hose (16) from side of unit and remove Disassemble 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 3. Remove Shroud, page 7. each other. 4. Loosen and remove screw (28) on hose bracket. 28 ti9331a 2. Slide new pump hose (16) over rollers. Move pump rollers by hand until or flip power switch to rotate ti9009a
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RotoFlex™ II Pump (RTX 1250) RotoFlex™ II Pump (RTX 1250) 6. Loosen and remove knob (42) on hose bracket (25). Disassemble 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 9. Grab pump hose (16) from side access panel and 5. Pull access panel (13) out t
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RotoFlex™ II Pump (RTX 1250) 5. Flip side access panel (13) down and tighten knob Reassemble (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 ti8938a panel. Move pump rollers by hand until or flip power switch to rotate rollers until they are positioned cor- 6. Replace and tighten screw (70) from side access rectly with pump hose. panel. 70 ti8868a 3. Replace hose bracket (25) to lock pump hose into ti8874a
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Compressor Compressor Use Compressor Repair Kit, 288612. 8. Remove 4 screws (29) and lift bracket (21) off of compressor. 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 49 ti8879a compressor. 10. Use a wrench to push down on push-to-connect fittings and pull out all
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Compressor 6. Replace bracket (21) and tighten 4 screws (29). Reassembly 1. Carefully position compressor back into sprayer 29 body. Make sure piston head facing front of sprayer. 21 ti8877a ti8940a ti8950a 7. Replace grounding screw (49) and tighten onto bracket (21). 2. Replace and tighten grounding screw (49). 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. Reattach air lines to co
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Piston/Cylinder Piston/Cylinder Use Piston/Cylinder Repair Kit 288609. 8. Use flat-blade screwdriver to pry head (74) from top of valve plate (75) and cylinder (76) from bottom of valve plate (75). Disassembly 9. Use 7/32 in. allen wrench to remove hex screw (87) 1. Relieve Pressure, page 6. from piston rod (77). 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. Remove muffler (11
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Piston/Cylinder 3. Replace three bolts (100) and use 1/2 in. socket to Reassembly 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 4. Position muffler (110) as seen below and press onto together. Do NOT let piston and cylinder head (74) until it snaps into place. come apart. If they do, make sure you 5. Replace Compressor, page 12. drop the piston down through the top of the cylinder and tilt t
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Valve Plate Valve Plate Use Valve Plate Repair Kit 288610. 8. Use flat-blade screwdriver to pry head (74) from top of valve plate (75) and cylinder (76) from bottom of valve plate (75). 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 i
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Motor Motor Use Motor Repair Kit 288613. 8. Use a box end wrench to loosen and remove two mounting bolts (105) on motor (71). 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 3. Remove Shroud, page 7. compressor belt to remove motor from compressor. ™ 4. Remove RotoFlex II Pump hose; page 9 or 10. 5. Remove
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Motor 5. Place compressor back into vice and torque bolts as Reassembly described in steps 2 and 3. 1. Angle motor pulley through compressor belt (84) 6. Replace fan (72) and tighten set screw. and pull motor (71) into position. SQ 71 72 84 ti8892a ti8890a 7. Replace Compressor; page 12. When replacing motor (71), make sure the ™ 8. Replace RotoFlex II Pump hose; page 9 or 10. square-shaped hole (SQ) is facing toward the out- side of the compressor. This hole will be used to 9. Replace Sh
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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 102 serious burns. Allow unit to completely cool before servicing the cooling tube. 101 ti8886a Disassembly 7. Use wrench to push against fitting (86) and carefully 1. Relieve Pressure, page 6. pull cooling tube (79) out. 2. Unplug sprayer from outlet. ti8952a ti2810b 8. Use 5/8 in. wrench to unscrew c
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Cooling Tube 3. Rotate cooling tube around and insert free end into Reassembly 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 ti9014a (86). Make sure tube is fully seated. 4. Replace screw (101) and washer (102) under cool- ing tube (79) and use 3/8 in. socket to tighten. 79 102 79 86 101 ti8895a ti8886a CAUTION 5. Replace Compressor; page 12. When
