Repair Interior Texture Sprayer RTX 650 311771B For Water-Based Materials Only Model: 254973 50 psi (0.35 MPa, 3.5 bar) Maximum Fluid Working Pressure 100 psi (0.7 MPa, 7.0 bar) Maximum Air Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. Related Manuals 311777 ti8370a 311767 Model 254973 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. 2. Tip sprayer up as shown. ti9075a Before adding material or starting unit in cold weather, run warm water through pump. Install burp guard (J) before adding material to hopper.
Component Identification Component Identification Model 254973 Shown P A B N M C H D R ti8369a E L F G K J Q 3.5 cfm@40 min.
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 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 Reassembly 1. Relieve Pressure, page 6. 1. Slide shroud (7) onto base (2). 2. Unplug sprayer from outlet. 2. Tighten two bottom screws (15) and two top screws (64 ) into shroud (7). ti2810b 3. Remove two screws (15) and two screws (64) from back of shroud (7). 64 7 15 ti9658a 4. Pull shroud (7) back and up over knob (41).
RotoFlex™ II Pump RotoFlex™ II Pump Disassembly 6. Use 3/8 in. socket to remove screw (36) from hose bracket (27). 1. Relieve Pressure, page 6. 2. Unplug sprayer from outlet. 36 ti9065a 7. Slide hose fittings out of hose bracket (27) and remove hose (23) from base (2). ti2810b 3. Remove Shroud, page 7. 4. Loosen two spacers (56) and knob (41). ti3084a 41 56 ti9657a 5. Loosen hopper fitting by hand to remove hopper (1).
RotoFlex™ II Pump Reassembly 1. Bend hose (23) so colored dots on hose fittings face each other and slide hose fittings through hose bracket (27). 5. To set pressure, apply petroleum jelly to threads (41), tighten knob (41) until back of bracket (25) is approximately 1/2 in. from front of tensioning bracket (16). 25 16 ti9710a ti3084a CAUTION Make sure protective fabric faces outside of hose. Roller will touch exposed area of pump hose when pump is in place.
Motor Motor Disassembly 9. Remove two clevis pins (20) from base. 1. Relieve Pressure, page 6. 2. Unplug sprayer from outlet. 20 ti8783a ti2810b 10. Slide motor tray (32) out of slots in base (2) to remove motor and tray from sprayer. 3. Remove Shroud, page 7. 4. loosen knob (41) until spring relaxes. 2 32 41 ti9070a ti9657a 11. Remove Belt, page 13. 5. Remove Pump, page 8. 12. Loosen bolts (4) and remove motor (31) from motor tray (32). 6. Disconnect all electrical Wiring, page 16. 32 7.
Motor Reassembly 1. Tighten Belt, page 13. 2. Use petroleum jelly to grease area of shaft that makes contact with extension cable (29). 6. Pull back on motor tray (32) to create slack in extension cable (29). Loop extension cable (29) through pulley (17) and connect to extension spring (19). Apply petroleum jelly to pulley (17) and threads on knob (41). 19 17 29 29 ti9060a ti9059a 3. Slide pin on motor tray (32) into slots on base and push motor and tray back into position. 7. Tighten knob (41).
Motor Fuse Removal Motor Fuse Removal When replacing fuse, use only Bussman GMF-3 (3A) to prevent premature trips or equipment damage. The cover will pop up to allow the fuse (F) to be inspected and replaced if needed. The motor has a replaceable fuse attached to the motor bracket. The fuse assembly (A) is fastened to the motor bracket along with a clamp. F A ti9201a ti9206a To remove the motor fuse, press down on the round center cover (C) and turn it counterclockwise.
Belt Belt Disassembly Reassembly 1. Relieve Pressure, page 6. 1. Loop one end of belt over extension cable (29) and pulley (17), then loop other end of belt over motor shaft (make sure teeth of belt (24) and pulley are aligned). 2. Unplug sprayer from outlet. 24 ti2810b 3. Remove Shroud, page 7. ti8784a 4. Remove Motor, page 10. 5. Place motor tray (32) into vice and tighten until snug. 2.
Troubleshooting Troubleshooting Problem Sprayer won’t run Pump won’t pump material Cause Solution Power switch not on Turn switch on. No power at wall outlet Check outlet by seeing if light in the plug is illuminated. If not, try another outlet. Wrong size generator Use a 3500 watt or larger generator. Refer to Generator Requirements, page 6. Too many items on same circuit Unplug other items from circuit Extension cord too long or wrong gauge Use a different extension cord.
Troubleshooting Problem Speed of application too slow Cause New pump hose not broken in properly Solution Run pump dry for no longer than 2 minutes. Material too thick Thin material. Nozzle too small Change nozzles to a larger size. See Operation Manual, Recommended Nozzle Selection Chart, page 10. Plugged or dirty gun Relieve Pressure, page 6. Clean gun. Kinked hose Unkink hose. Gun fluid flow adjustment set too low Increase flow adjustment with flow adjustment nut.
Wiring Diagram Wiring Diagram 31 39 10 Motor ON/OFF Switch Red Wire Green Wire Black Wire Black Wire Green Wire White Wire Chassis Ground 25 White Wire 8 Power Cord ti9199a 16
Parts Parts Models 254973 9 42 64 7 6 55 • 9 12 13 18 2 42 65 • 1 • 64 15 56 46 25 • 47 41 ti9654a • 8 37 14 5 10 3 39 37 63 4 31 20 21 43 17 11 16 22 24 2 19 32 29 20 36 33 ti9655a 23 27 44 17
Parts Parts Models 254973 Ref.
Technical Data Technical Data Main Unit Power Requirements . . . . . . . . . . . . . . . . . . . . Maximum Fluid Working Pressure . . . . . . . . . . . . . . . . . . Maximum Air Working Pressure . . . . . . . . . . . . . . . . . . . . Compressor Specifications. . . . . . . . . . . . . . . . . . . . . . . . Compressor (Not Supplied) . . . . . . . . . . . . . . . . . . . . . . . Generator (Optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electric Motor . . . . . . . . . . . . . . . . . . .
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.
