Graco RTX 1250 Repair Manual Download Page 24 | Manualshive

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Regulator Valve

24

311772G

Regulator Valve

Use Regulator Repair Kit 288757.

Disassembly

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.

4.

Use phillips screwdriver to remove two screws.

5.

Remove old regulator valve.

Assembly

1.

Replace new regulator valve and feed through 3
holes on side of sprayer.

2.

Reattach two air lines.

3.

Replace two screws and tighten with phillips screw-
driver.

4.

Replace

Knob

, page 23.

5.

Replace

Shroud

, page 7.

ti8952a

ti9279a

ti9282a

ti9275a

ti9279a

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Summary of Contents for RTX 1250

Page 1: ... Models 254974 and 254975 70 psi 0 49 MPa 4 9 bar Maximum Fluid Working Pressure Related Manuals Important Safety Instructions Read all warnings and instructions in this manual Save these instructions 311777 311768 Model 254975 Shown ti8867a 311772H Repair Interior Texture Sprayers RTX 900 RTX 1250 US C Conforms to ANSI UL standard 1450 ...

Page 2: ...Comply with all applicable state and national fire electrical and safety regulations Keep a fire extinguisher in the work area Equipment Misuse Hazard Equipment misuse can cause equipment to rupture malfunction or start unexpectedly and cause serious injury Before operating this equipment read all manuals tags and labels including material labels and instructions Do not expose system to rain Alway...

Page 3: ...Plastic Parts Use only compatible water based solvents to clean plastic structural or pressure containing parts Many solvents can degrade plastic parts to the point where they could fail Such failure could cause serious injury or property damage See Technical Data on page 33 of this instruction manual and in all other equipment manuals Read fluid and solvent manufacturer s warnings Burn Hazard Equ...

Page 4: ...aterial line from sprayer 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 When only a small amount of material remains in the hopper the burp guard prevents material from shooting out when the unit is turned off This material could splash in the operator s eyes or on skin or into the a...

Page 5: ... Gauge E RotoFlex II Pump inside S Nozzle 4 Total 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 Control W Air Control K ON OFF Switch bb Hopper Clamp L Selector Switch Hopper Gun Sprayer cc Gun Plug Clip M Material Hopper 10 gallon RTX 900 Material Hopper 12 gallon RTX 1250 dd Hopper Gun M D F A G C L Model 254975 Sho...

Page 6: ...s and ordinances Check with a qualified electrician or if grounding instructions are not completely understood or if in doubt as to whether the product is properly grounded Do not modify plug provided if it will not fit the outlet have proper outlet installed by a qualified electrician 120V AC Systems This equipment requires a 120V AC 60 Hz 15A circuit with a grounding receptacle Do not use an ada...

Page 7: ...up to remove from sprayer 6 Loosen screws 30 and screw 31 from toolbox and remove toolbox 2 from sprayer 7 Loosen screws 31 on shroud 8 Loosen and remove screw 70 from lower right cor ner of side access panel RTX1250 only 9 Loosen knob 42 on side access panel and swing open door 10 Use screwdriver to remove second screw 30 11 Remove two shroud halves 5 and 7 from sprayer ti2810b ti8871a ti8875a 14...

Page 8: ...hten knob 42 4 Tighten screw 70 into lower right corner of side access plate 5 Replace toolbox 2 and tighten screws 30 and screw 31 6 Tighten screws 31 on shroud 7 Spread handle bars apart and slide handle down into place 8 Tighten 2 knobs 14 on sprayer handle 12 9 Replace hopper and tighten hopper fitting by hand until snug ti9015a 5 ti9283a 30 42 ti8938a ti8874a 70 ti8884a 31 2 30 ti8882a 31 ti8...

Page 9: ...o colored dots on hose fittings face each other 2 Slide new pump hose 16 over rollers Move pump rollers by hand until or flip power switch to rotate rollers until they are positioned correctly with pump hose 3 Feed pump fittings through front access panel keyhole slots and slide into place 4 Replace hose bracket 25 to lock pump hose fit tings into place 5 Replace hose bracket 25 and tighten screw ...

Page 10: ...e access panel 5 Pull access panel 13 out to release 3 fastening tabs and flip up to expose side access to pump 6 Loosen and remove knob 42 on hose bracket 25 7 Remove hose bracket 25 8 Slide pump fittings over and through keyhole slots 9 Grab pump hose 16 from side access panel and remove pump hose from unit ti2810b ti8870a 42 70 ti8874a ti8872a 13 42 ti8945a 25 ti9288a 25 ti8869a 16 ti9333a ...

Page 11: ...witch to rotate rollers until they are positioned cor rectly with pump hose 3 Replace hose bracket 25 to lock pump hose into place 4 Tighten hose bracket knob 42 5 Flip side access panel 13 down and tighten knob 42 6 Replace and tighten screw 70 from side access panel 7 Break in new pump by adding 1 cup of water to pump and running dry for 3 minutes ti9331a ti8868a ti9288a 25 42 ti8945a 42 ti8938a...

Page 12: ...ket 21 8 Remove 4 screws 29 and lift bracket 21 off of compressor 9 Remove shoulder bolt 49 holding pump roller in place 10 Use a wrench to push down on push to connect fittings and pull out all nylon hoses 11 Disconnect all electrical wire connectors see Wiring Diagram page 27 12 Thoroughly clean inside housing removing dust and debris To service the compressor remove it from the sprayer body and...

Page 13: ... tighten shoulder bolt 49 to lock into place 6 Replace bracket 21 and tighten 4 screws 29 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 9 Replace and tighten second grounding screw 49 to bracket 21 10 Replace RotoFlex II Pump hose page 9 or 10 11 Replace S...

Page 14: ...se page 9 or 10 5 Remove Compressor page 12 6 Remove muffler 110 from head 74 by pulling straight out by hand 7 Use 1 2 in socket to remove three bolts 100 from head 74 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 ti2810b 100 74 75 76 110 ti8887a ti8893a 87 7...

Page 15: ... lb 4 Position muffler 110 as seen below and press onto head 74 until it snaps into place 5 Replace Compressor page 12 6 Replace RotoFlex II Pump hose page 9 or 10 7 Replace Shroud page 7 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 throug...

Page 16: ...loosen and remove three bolts 100 from head 74 8 Use flat blade screwdriver to pry head 74 from top of valve plate 75 and cylinder 76 from bottom of valve plate 75 Reassembly 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 Replace...

Page 17: ...cing motor 7 Loosen set screw and remove fan 72 8 Use a box end wrench to loosen and remove two mounting bolts 105 on motor 71 9 Angle motor 71 and slide motor pulley through compressor belt to remove motor from compressor 10 Use 7 32 in allen wrench to remove hex screw 87 from piston rod 77 11 Remove compressor belt 84 ti2810b ti8951a ti8892a 72 CAUTION Be careful not to bend or damage the coolin...

Page 18: ...Tighten motor bolts 105 4 Take compressor out of vice and rotate pump pulley 104 one full revolution to seat the belt properly 5 Place compressor back into vice and torque bolts as described in steps 2 and 3 6 Replace fan 72 and tighten set screw 7 Replace Compressor page 12 8 Replace RotoFlex II Pump hose page 9 or 10 9 Replace Shroud page 7 When replacing motor 71 make sure the square shaped hol...

Page 19: ... Remove Compressor page 12 6 Use 3 8 in socket to remove screw 101 and washer 102 under cooling tube 79 7 Use wrench to push against fitting 86 and carefully pull cooling tube 79 out 8 Use 5 8 in wrench to unscrew cooling tube fitting The cooling tube is extremely hot and can cause serious burns Allow unit to completely cool before servicing the cooling tube ti2810b ti8886a 101 102 79 ti8952a ti89...

Page 20: ...ct fitting Make sure tube is fully inserted 4 Replace screw 101 and washer 102 under cool ing tube 79 and use 3 8 in socket to tighten 5 Replace Compressor page 12 6 Replace RotoFlex II Pump hose page 9 or 10 7 Replace Shroud page 7 CAUTION When replacing cooling tube make sure coil is facing up when you push the tubing into the fitting If you push from any other angle you could bend or damage the...

Page 21: ...lt page 17 7 Loosen set screw and remove fan 79 8 Loosen screw 39 and remove Idler 106 Reassembly 1 Install new compressor belt page 17 2 Replace new Idler 106 and tighten screw 39 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 Every time you replace the Idler you should also replace the compressor belt page ...

Page 22: ...rench to loosen roller mounting bolt 87 and remove roller pulley 73 7 Remove belt 83 and discard Reassembly 1 Install new compressor belt 83 2 Loop belt over roller pulley and align roller with bolt hole 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 Every time you replace the roller pull...

Page 23: ...bly 1 Position new knob to point right approximately 45 from vertical and slide it onto exposed spline 2 Apply Locktite 1 drop or small amount to knob nut and tighten with wrench Once knob has been removed don t move the exposed spline If it is moved use your fingers to turn it clockwise as far as it will go for a tight fit prior to reassembly of knob This will properly align knob to spline ti9219...

Page 24: ... and carefully pull cooling tube 79 out 4 Use phillips screwdriver to remove two screws 5 Remove old regulator valve Assembly 1 Replace new regulator valve and feed through 3 holes on side of sprayer 2 Reattach two air lines 3 Replace two screws and tighten with phillips screw driver 4 Replace Knob page 23 5 Replace Shroud page 7 ti8952a ti9279a ti9282a ti9275a ti9279a ...

Page 25: ...d retighten all fittings Plugged gun Relieve Pressure page 6 Remove gun from hose Clean gun Pump hose worn out Replace hose Recommended hose replacement once every year Pump cold Move pump to warm room and allow it to warm up or run hot water through sprayer Material runs out of bottom of sprayer Pump hose worn out Replace hose Loose fittings Check and retighten all fittings No air from compressor...

Page 26: ...er to Grounding and Electric Require ments page 6 Intermittent flow sputtering Hopper connection not tight Check gasket TIghten connection Debris in system Clean system Quick disconnect does not stay con nected Dirty or corroded fitting Clean thoroughly Soak in oil Apply a few drops of light oil Gun will not shut off Worn nozzle or needle Relieve Pressure page 6 Replace worn parts Debris in needle...

Page 27: ...re Power Cord Green Wire GND ti8937a 49 Cylinder Air Valve Manifold on Compressor Compressor Air Outlet 38 84 15 34 ti8936a 55 59 Relief Valve 56 53 68 66 81 Gauge Regulator 69 RTX 1250 RTX 900 Cylinder Air Valve Manifold on Compressor Compressor Air Outlet Relief Valve 38 56 59 55 34 15 84 ti9232a 41 ...

Page 28: ... 28 311772G Parts 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 900 RTX 900 83 RTX 1250 45 85 85 85 ...

Page 29: ...Parts 311772G 29 Parts 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 Only 60 31 31 1 68 58 78 ...

Page 30: ...GER 2 34 288856 COMPRESSOR pump assembly 1 35 120236 SCREW shoulder 1 36 120731 WASHER flat 1 38 289591 CYLINDER RTX 1 40 15J758 CORD power 1 41 113318 FITTING elbow plug in 1 42 15J862 KNOB 1 4 20 4 prong 1 43 15D561 COVER tool tray 1 45 288628 GUN spray 1 46 234147 HOSE 1 47 120759 PAD non slip foot 1 48 103473 STRAP tie wire 1 49 115498 SCREW mach slot hex wash hd 2 50 104227 NUT lock 1 51 15H8...

Page 31: ...SHER flat 1 37 120411 RIVET blind 3 38 289591 CYLINDER RTX 1 40 15J758 CORD power 1 42 15J862 KNOB 1 4 20 4 prong 3 43 15D561 COVER tool tray 1 46 234147 HOSE 1 48 103473 STRAP tie wire 1 47 15K049 ISOLATOR foot 1 49 115498 SCREW mach slot hex wash hd 2 50 104227 NUT lock 1 51 15H841 LABEL warning 1 52 15K616 LABEL caution 1 53 120694 TUBE air 1 54 15H868 LABEL instruction 1 55 120568 TUBE air 250...

Page 32: ...r pulley w rollers includes 73 83 87 1 74 288746 KIT repair head compressor includes 74 75 1 75 288610 KIT repair plate valve 1 76 CYLINDER compressor 1 77 288609 KIT repair piston cylinder includes 75 76 77 87 1 79 288614 KIT repair cooler includes 79 86 1 83 120234 BELT 1 84 120233 BELT 1 86 120245 FITTING 1 87 120204 SCREW mach hex flat head 2 95 120593 SCREW mach torx pan hd 3 100 120229 SCREW...

Page 33: ...10 gallons Gun material hopper 3 4 gallon Maximum delivery with texture RTX 900 0 9 gpm 3 4 lpm RTX 1250 1 25 gpm 4 7 lpm Dimensions RTX 900 Length 23 in 584 mm with handle Width 18 in 456 mm Height 40 in 1016 mm Weight includes hose and gun 60 lb 27 2 kg Dimensions RTX 1250 Length 24 in 609 mm with handle Width 20 in 508 mm Height 41 in 1041 mm Weight includes hose and gun 65 lb 29 5 kg Wetted pa...

Page 34: ...l repair or replace free of charge any defective parts The equipment will be returned to the original purchaser transportation prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIE...

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