Instruction/ maintenance manual of the product 254974 Graco
Go to page of 34
-For Water-Based Materials Only- Models: 254974 and 254975 70 psi (0.49 MPa, 4. 9 bar) Maximum Fluid Workin g Pressure Related Manuals Important Safety Instru ctions Read all warnings and instru ctions in this manual.
Warnings 2 311772M Warnings The following are general wa rnings related to the setup, us e, grounding, mainte nance and repair of this equipment. Additional, more specific wa rnings ma y be found throughout the body of this manual wher e applicable. Symbols appearing in the body of the manual refer to the se general warn ings.
Warnings 311772M 3 Electric Shock Hazard To reduce the risk of electric shock: • Be sure sprayer is adequate ly grou nded throug h electrical outlet, page 6. • Use only 3-wire, extension cords. • Make sure ground prongs are intact on sprayer and extension cords.
Warnings 4 311772M CAUTION Water or material remaining in unit when temperatures are below freezing can dam age motor and/or delay pump sta rtup. To insure water and material are comp letely drained out of unit: 1. Remove material li ne from sprayer. 2.
Component Identification 311772M 5 Component Identification 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 .
Component Identi fication 6 311772M Pressure Relief Procedure To reduce risk of inju ry, follow this procedure whenever you see this symbol thro ughout this manual, Also, perform this proced ure whenever you: • Stop spraying • Check or repair any part of this system • Install or clean spray nozzle 1.
Shroud Removal 311772M 7 Shroud Removal Disassembly 1. Relieve Pressure , pa ge 6. 2. Unplug sprayer from outlet. 3. Loosen bottom hopper fitting by hand and pull hopper up and off from han dle. 4. Loosen and remove 2 knobs ( 14) on sprayer handle (12).
Shroud Removal 8 311772M Reassembly 1. Angle left shroud half (5 ) into base a nd push down into place. Then replace right shro ud half (7). 2. Replace and tighten second screw (3 0). 3. Swing access door down (RTX 1250) and tighten knob (42). 4. Tighten screw (70) in to lower right corner of s ide access plate.
RotoFlex™ II Pump (RTX 900) 311772M 9 RotoFlex™ II Pump (RTX 900) Disassemble 1. Relieve Pressure , pa ge 6. 2. Unplug sprayer from outlet. 3. Remove Shroud , page 7. 4. Loose n and remove screw (2 8) on hose bracket. 5. Remove h ose bracke t (25).
RotoFlex™ II Pump (RTX 1250) 10 311772M RotoFlex™ II Pump (RTX 1250) Disassemble 1. Relieve Pressure , pa ge 6. 2. Unplug sprayer from outlet. 3. Loosen knob (42) on side access panel. 4. Remove s crew (70) fr om side acc ess panel. 5. Pull acce ss panel (13) out to release 3 fastening tabs and flip up to expose side access to pump.
RotoFlex™ II Pump (RTX 1250) 311772M 11 Reassemble 1. Bend hose (16) so colored dots on hose fitt ings face each other. 2. Slide new pump hose (16) in from side access panel. Move pump rollers by hand until or flip powe r switch to rotate rollers un til they are positioned cor- rectly with pump hose .
Compressor 12 311772M Compressor Use Compressor Repair Kit, 288612. Disassembly 1. Relieve Pressure, pa ge 6. 2. Unplug sprayer from outlet. 3. Remove Shroud , page 7. 4. Remove RotoFlex ™ II Pu mp hose; page 9 or 10. 5. Unscrew and remove grounding screw (4 9) from compressor.
Compressor 311772M 13 Reassembly 1. Carefully positio n comp ressor back into sprayer body. Make sure piston head facing front of spraye r. 2. Replace and tighten grounding screw (49). 3. Reattach air lines to co mpressor. 4. Reatta ch 2 wires to compressor see Wiring Diagram , page 27.
Piston/Cylinder 14 311772M Piston/Cylinder Use Piston/Cylinder Repair Kit 288609. Disassembly 1. Relieve Pressure , pa ge 6. 2. Unplug sprayer from outlet. 3. Remove Shroud , page 7. 4. Remove RotoFlex ™ II Pu mp hose; page 9 or 10. 5. Remove Compressor , page 12.
Piston/Cylinder 311772M 15 Reassembly 1. Replace piston (77) and cylinder (76) an d use 7/32 in. allen wrench to tighten hex screw (8 7) into piston rod. 2. Replace va lve plate (7 5) with ribs f acing up to ward head. 3. Replace three bol ts (100) and use 1/2 in.
Valve Plate 16 311772M Valve Plate Use Valve Plate Repair Kit 288610. Disassembly 1. Relieve Pressure , pa ge 6. 2. Unplug sprayer from outlet. 3. Remove Shroud , page 7. 4. Remove RotoFlex ™ II Pu mp hose; page 9 or 10. 5. Remove Compressor , page 12.
Motor 311772M 17 Motor Use Motor Repair Kit 28 8613. Disassembly 1. Relieve Pressure , pa ge 6. 2. Unplug sprayer from outlet. 3. Remove Shroud , page 7. 4. Remove RotoFlex ™ II Pump hose; page 9 or 10. 5. Remove Compressor , page 12. 6. Remove co mpressor fro m sprayer bo dy and place it in a vice.
Motor 18 311772M Reassembly 1. Angle mot or pulley thro ugh compress or belt (84) and pull motor (71) into position. 2. Tighte n two mounting bolts (10 5) on motor (71) unt il snug, then back 1/8 of a turn.
Cooling Tube 311772M 19 Cooling Tube Use Cooler Repair Kit 288614. Disassembly 1. Relieve Pressure, pa ge 6. 2. Unplug sprayer from outlet. 3. Remove Shroud , page 7. 4. Remove RotoFlex ™ II Pump hose; page 9 or 10. 5. Remove Compressor , page 12. 6.
Cooling Tube 20 311772M Reassembly 1. Insert new coo ling tube fitting and us e 5/8 in. wrench to tighten. 2. Insert coolin g tube (79) and push into new fitting (86). Make sure tube is fully seated. 3. Rotate cooling tube around and inse rt free end into push-to-connect fitting.
Idler 311772M 21 Idler Use Idler Repair Kit 288611. Disassembly 1. Relieve Pressure , pa ge 6. 2. Unplug sprayer from outlet. 3. Remove Shroud , page 7. 4. Remove RotoFlex ™ II Pump hose; page 9 or 10. 5. Remove Compressor , page 12. 6. Remove c ompressor belt, page 17 .
Roller Pulley/Belt 22 311772M Roller Pulley/Belt Use Roller Pulley Repair Kit 28861 6. Disassembly 1. Relieve Pressure , pa ge 6. 2. Unplug sprayer from outlet. 3. Remove Shroud , page 7. 4. Remove RotoFlex ™ II Pu mp hose; page 9 or 10. 5. Remove Compressor , page 12.
Selector Switch Knob 311772M 23 Selector Switch Knob Use Knob Repair Kit 288756. Disassembly 1. Turn selector switch knob clockwis e as far as it will go. 2. Use wrench to remove nut from knob. 3. Pull knob straight of f from spra yer. Assembly 1. Position new knob to point right (app roximately 45° from vertical) and slide it onto exposed spline.
Regulator Valve 24 311772M Regulator Valve Use Regulator Repair Kit 288757. Disassembly 1. Remove Knob , page 23. 2. Remove Shroud , page 7. 3. Use wrench to push ag ainst fitting (86) and carefu lly pull cooling tube (79) out. 4. Use phillips screwdriver to remove two screws.
Troubleshooting 311772M 25 Troubleshooting Problem Cause Solution Sprayer won’t run Power switch not on Turn switch on. No power at wall outlet Check outlet by plugging in an other appliance. If appliance does no t work, try another outlet. Wrong size generator Use a 3500 watt or larger generator .
Troubleshooti ng 26 311772M Speed of a pplication slow or slower Material to o thick Thin materi al. 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.
Wiring Diagram 311772M 27 Wiring Diagram Air Diagram 40 19 34 21 49 Switch Motor White Wire Black Wire Power Cord Green Wire (GND) ti8937a 49 Cylinder Air Valve Manifold on Compressor Compressor Air O.
Parts Drawing 28 311772M Parts Drawing Models 254974 and 254975 23 42 43 2 7 25 42 10 11 40 31 30 14 12 63 5 62 32 15 ti8901c 14 8 62 47 37 22 46 29 71 28 (RTX 900) 47 (RTX 900) 70 76 82 77 79 (RTX 90.
Parts Drawing 311772M 29 Parts Drawing Models 254974 and 254975 6 19 61 3 4 16 38 21 26 29 29 35 50 59 51 54 15 29 ti8902b 52 27 34 36 49 • • • RTX 1250 Only 66 33 65 69 80 49 • 57 RTX 1250 On.
Parts List 30 311772M Parts List Models 254974 Additional warning labels are available at no cost . Ref. Part Description Qty. 1 288386 PLATE, front, RTX 1 2 15J600 T OOLBOX 1 3 15H069 SUPPORT, ho.
Parts List 311772M 31 Parts List Models 254975 Additional warning labels available at no cost. Ref Part Description Qty 1 288386 PLATE, front, RTX 1 2 15J600 T OOLBOX 1 3 15H069 SUPPORT, hopper, R.
Parts Drawing and List 32 311772M Parts Drawing and List Compressor 288856 & 288651 110 100 74 75 71 108 109 106 105 77 73 87 83 84 87 101 102 72 79 ti8903a 86 76 117 Ref.
Technical Data 311772M 33 Technical Data * Measured while spraying at 1 m ** Measured per ISO-3744 Main unit power requirements 120 Vac, 60 Hz, 15A, 1 phase Maximum fluid working pressure 70 psi, (4.
All written and visual data contained in this document reflects the latest product info r mation available at the time of publica tion. Graco reserves the right to make changes a t any time without notice. For patent information, see www.graco.com/patents.
An important point after buying a device Graco 254974 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Graco 254974 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Graco 254974 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco 254974 you will learn all the available features of the product, as well as information on its operation. The information that you get Graco 254974 will certainly help you make a decision on the purchase.
If you already are a holder of Graco 254974, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Graco 254974.
However, one of the most important roles played by the user manual is to help in solving problems with Graco 254974. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco 254974 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
