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Graco 311772H manual

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Table of contents for the manual

  • Page 1

    Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441 Copyright 2006, Graco Inc. is r egistered to I. S. EN ISO 9001 For W ater- Based Materials Only Models: 254974 and 254975 70 psi (0.4 9 MP a, 4.9 bar ) Maximum Fluid W orking Pressure Related Manuals Important Safety Instructions Read all warnings and instruction s in this manual. Sav e these inst[...]

  • Page 2

    Warnings 2 311772G Wa r n i n g s The f ollowing are general w ar nings related to the setup , use, g rounding, maint enance and repair of this equipment. Additional, mo re specific warnings ma y be f ound thro ugh out the body of this manu al where applicab le. Symbols appearing in the body of the man ual ref er to these gener al warnings . When t[...]

  • Page 3

    Warnings 311772G 3 Electric Shoc k Hazard T o reduce the risk of electric shock: • B e sure spr a yer is adequat ely g rounded through e lectrical outlet, page 6. • Use only 3-wire, e xtension cords. • Mak e sure gr ound prongs are int act on spra yer and e xtension cords. • Do not oper ate with co v er remov ed. • T urn o ff spra yer . F[...]

  • Page 4

    Warnings 4 311772G CA UTION W ater or material remaining in unit when tempe ratures ar e below fr eezing can damag e motor and/or dela y pump star tup . T o insure water and ma terial are completely dr ained out of un it: 1. Remove material lin e from spray er . 2. Tip spra yer up as shown. Bef ore adding mat erial or star ting unit in cold weathe [...]

  • Page 5

    Component Identification 311772G 5 Component Identification Item Component Item Component A Handle N Burp Guard B T oolbo x P Mater ial/Air Hose C P ower Cord (120V , 25 ft) Q Accessories Bag D Side Pump Access P anel (R TX 1250 Only) R Material Thickne ss Gauge E RotoFle x ™ II Pump (ins ide) SN o z z l e ( 4 T o t a l ) F Pump Hose Outlet T Hos[...]

  • Page 6

    Component Ide ntification 6 311772G Pressure Relief Pr ocedure T o reduce r isk of injury , f ollow this procedure whene v er y ou see this symbol throu ghout this manual, Also , perf or m this procedure whene ver you : • Stop spraying • Check or repair any par t of this syst em • Install or clean spra y nozzle 1. T ur n P ow er Switch OFF . [...]

  • Page 7

    Shroud Removal 311772G 7 Shr oud Remov al Disassembl y 1. Relie ve Pressure , page 6. 2. Unplug spr a yer from outlet. 3. Loosen bott om hopper fittin g by hand and pull hopper up and of f from handle . 4. Loosen and re mov e 2 knobs (14) on spra yer hand le (12). 5. Spread handle bars apar t and pull up to remo v e from spray er . 6. Loosen scre w[...]

  • Page 8

    Shroud Removal 8 311772G Reassembl y 1. Angle left shr oud half (5) into base a nd push down into place . Then replace right shroud half (7). 2. Replace and tig hten second scre w (30). 3. Swing access door do wn (R TX 1250) and tighten knob (42). 4. Tighten scre w (70) into lo wer right corner of side access plate. 5. Replace to olbo x (2) and tig[...]

  • Page 9

    RotoFlex™ II Pump (RTX 900) 311772G 9 RotoFle x™ II Pump (R TX 900) Disassemble 1. Relie ve Pressure , page 6. 2. Unplug spr a yer from outlet. 3. Remove Shr oud , page 7. 4. Loosen and re mov e screw (28) on hose brack et. 5. Remove hose brac ket (25). 6. Slide pump fitt ings o v er and push thro ugh k eyho le slots. 7. Gr ab pump hose (16) fr[...]

  • Page 10

    RotoFlex™ II Pump (RTX 1250) 10 311772G RotoFle x™ II Pump (R TX 1250) Disassemble 1. Relie ve Pressure , page 6. 2. Unplug spr a yer from outlet. 3. Loosen knob ( 42) on side access panel. 4. Remove scre w (7 0) from side access panel. 5. Pull access pane l (13) out to release 3 fastening tabs and flip up to expose side access to pump. 6. Loos[...]

  • Page 11

    RotoFlex™ II Pump (RTX 1250 ) 311772G 11 Reassemble 1. Bend hose (16) so colore d dots on hose fittings f ace each other . 2. Slide ne w pump hose (16) in from side access panel. Mo v e pump rollers b y hand until or flip pow er s witch to rotate r ollers until th ey are positioned c or- rectly with pump hose. 3. Replace ho se br ack et (25) to l[...]

  • Page 12

    Compressor 12 311772G Compressor Use Compressor Repair Kit, 288612. Disassembl y 1. Relie ve Pressure, page 6. 2. Unplug spr a yer from outlet. 3. Remove Shr oud , page 7. 4. Remove RotoFle x ™ II Pump hose; page 9 or 10. 5. Unscre w and remo ve gr ounding scre w (49) from compressor . 6. Use 9/16 in. soc ke t and wr ench to re mov e pivot bolt ([...]

  • Page 13

    Compressor 311772G 13 Reassembl y 1. Carefully positio n compressor back into spr a yer body . Mak e sure piston head f acing front of spra yer . 2. Replace and tig hten grou nding scre w (49). 3. Reattach air lines to com pressor . 4. Reattach 2 wires to compressor see Wiring Diagram , page 27. 5. Replace air cylinder and tighten shoulder bolt (49[...]

  • Page 14

    Piston/Cylinder 14 311772G Piston/Cylinder Use Piston/Cylinder Rep air Kit 288609. Disassembl y 1. Relie ve Pressure , page 6. 2. Unplug spr a yer from outlet. 3. Remove Shr oud , page 7. 4. Remove RotoFle x ™ II Pump hose; page 9 or 10. 5. Remove Compress or , page 12. 6. Remo v e muffler (110) from he ad (74) b y pulling straight o ut b y hand.[...]

  • Page 15

    Piston/Cylinder 311772G 15 Reassembl y 1. Replace piston (77) and cylinder (76) and use 7/32 in. allen wrench to tighten hex screw (87) into piston rod. 2. Replace v alve plate (75) wit h ribs facin g up tow ard head. 3. Replace th ree bolts (100) and use 1/2 in. soc k et to tighten into he ad (74). T orque all three bolts to 75 in-lb , then torque[...]

  • Page 16

    Valve Plate 16 311772G V alve Plate Use V alv e Plate Repair Kit 288610. Disassembl y 1. Relie ve Pressure , page 6. 2. Unplug spr a yer from outlet. 3. Remove Shr oud , page 7. 4. Remove RotoFle x ™ II Pump hose; page 9 or 10. 5. Remove Compress or , page 12. 6. Remo v e muffler (110) from he ad (74) b y pulling straight o ut b y hand. 7. Use 1/[...]

  • Page 17

    Motor 311772G 17 Motor Use Motor Repai r Kit 288613. Disassembl y 1. Relie ve Pressure , page 6. 2. Unplug spr a yer from outlet. 3. Remove Shr oud , page 7. 4. Remove RotoFle x ™ II Pump hose; page 9 or 10. 5. Remove Compress or , page 12. 6. Remov e compressor from spra yer body an d place it in a vice. Tighten the vice onto the main pu lley to[...]

  • Page 18

    Motor 18 311772G Reassembl y 1. Angle moto r pulley th rough compressor belt (84) and pull moto r (71) into position. 2. Tighten tw o mountin g bolts (105) on motor (7 1) until snug, the n back 1/ 8 of a turn. 3. Inser t torque wrench into sq uare hole (SQ) o n motor and tighten bolt s to 130-150 in- lb (this ma y require two people; o ne to torq u[...]

  • Page 19

    Cooling Tube 311772G 19 Cooling T ube Use Cooler Repair Kit 288614. Disassembl y 1. Relie ve Pressure, page 6. 2. Unplug spr a yer from outlet. 3. Remove Shr oud , page 7. 4. Remove RotoFle x ™ II Pump hose; page 9 or 10. 5. Remove Compress or , page 12. 6. Use 3/8 in. soc ket to remo v e scre w (101) and wash er (102) u nder cooling tube (79). 7[...]

  • Page 20

    Cooling Tube 20 311772G Reassembl y 1. Inser t ne w cooling tube fitt ing and use 5/8 in. wrench to t ighten. 2. Inser t cooling tube ( 79) and push into ne w fitting (86). Mak e sure tube is fully seated. 3. Rotate cooling t ube around and insert free end into push-to-connect fitting. Mak e sure tube is fully inser ted. 4. Replace scre w (101) and[...]

  • Page 21

    Idler 311772G 21 Idler Use Idler Repair Kit 28861 1. Disassembl y 1. Relie ve Pressure , page 6. 2. Unplug spr a yer from outlet. 3. Remove Shr oud , page 7. 4. Remove RotoFle x ™ II Pump hose; page 9 or 10. 5. Remove Compress or , page 12. 6. Remov e compressor belt, page 17 . 7. Loosen set scr ew an d remo v e f an (79). 8. Loosen scre w (39) a[...]

  • Page 22

    Roller Pulley/Belt 22 311772G Roller Pulle y/Belt Use Roller Pulley Repair Kit 288616. Disassembl y 1. Relie ve Pressure , page 6. 2. Unplug spr a yer from outlet. 3. Remove Shr oud , page 7. 4. Remove RotoFle x ™ II Pump hose; page 9 or 10. 5. Remove Compress or , page 12. 6. Use 7/32 in. allen wrench to loosen roller mounting bolt (87) and remo[...]

  • Page 23

    Selector Switch Knob 311772G 23 Selector Switch Knob Use Knob Repair Kit 288756. Disassembl y 1. T ur n selec tor s witch knob clockwise as f ar as it will go . 2. Use wren ch to r emov e nut f rom knob . 3. Pull knob s traight off from sp ra yer . Assembl y 1. P osition ne w knob to point right (appro ximately 45° from v er tical) and slide it on[...]

  • Page 24

    Regulator Valve 24 311772G Regulator V alve Use Regulator Rep air Kit 28875 7. Disassembl y 1. Remove Knob , page 23. 2. Remove Shr oud , page 7. 3. Use wrench to push against fitt ing (86) and ca refully pull cooling tube ( 79) out. 4. Use phillips scre wdr iver to remo v e two screw s. 5. Remov e old regulator v alve. Assembl y 1. Replace ne w re[...]

  • Page 25

    Troubleshooting 311772G 25 T roub leshooting Prob lem Cause Solution Spra yer won’t run P ower s witch not o n T ur n s wit ch on. No pow er at w all outlet Chec k outlet b y plugging in anot her appliance . If appliance does not work, try another outlet. Wrong size ge nerator Use a 3500 wa tt or larger gene rator . Ref er to Gen erator Requ irem[...]

  • Page 26

    Troubleshooti ng 26 311772G Speed of application slo w or slower Material too thic k Thin material. Nozzle too small Change nozzles to a larger siz e. See Operat ion man ual 311768 . T oo mu ch air being used. P ar tially close g un air v alve to reduce air flow . Pump hose worn Repl ace hose. Plugged or dirty gun Relie ve Pressure , page 6. Clean [...]

  • Page 27

    Wiring Diagram 311772G 27 Wiring Diagram Air Diagram 40 19 34 21 49 Switch Motor White Wire Black Wire P ower Cord Green Wire (GND) ti8937a 49 Cylinder Air V alve Manifold on Compressor Compressor Air Outlet 38 84 15 34 ti8936a 55 59 Relief V alve 56 53 68 66 81 Gauge Regulator 69 RTX 1250 RTX 900 Cylinder Air V alv e Manifold on Compressor Compres[...]

  • Page 28

    Parts 28 311772G Pa r t s Models 25497 4 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 (R TX 900) 47 (R TX 900) 70 76 82 77 79 (R TX 900) (R TX 900) 83 (R TX 1250) 45 85 85 85[...]

  • Page 29

    Parts 311772G 29 Pa r t s 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 RT X 1250 Only 60 31 31 1 68 58 78[...]

  • Page 30

    Parts 30 311772G Pa r t s Models 254974 ▲ Additional w arning labels are av ailable at no cost. Ref. P ar t Description Qty . 1 288386 PLA TE, front, R TX 1 2 15J60 0 T O OLBO X 1 3 15H069 SUPPOR T , hopper , R TX 1 4 288384 FRAME, back , R TX (painted) 1 5 288350 COVER, shroud; R TX 900 1 6 277319 SHIELD , bottom 1 7 288351 COVER, shroud; R TX 9[...]

  • Page 31

    Parts 311772G 31 Pa r t s Models 254975 ▲ Additional w arning labels av ailab le at no cost. Ref P art Description Qty 1 288386 PLA TE , front, RTX 1 2 15J600 TOOLBO X 1 3 15H069 SUPPORT , hopper , R T X 1 4 288384 FRAME, back, R TX (painted) 1 5 288650 CO VER, shroud 1 6 277319 SHIELD , bot tom 1 7 288382 CO VER, shroud (painte d) 1 8 15J671 AXL[...]

  • Page 32

    Parts 32 311772G Pa r t s 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. P ar t Description Qty . 288856 KIT , repair , compressor , complete (includes all items) R TX 900 288651 KIT , repair , compressor , complete (includes all items) R TX 1250 288612 KIT , repair , compresso[...]

  • Page 33

    Technical Data 311772G 33 Te c h n i c a l D a t a * Measured while spra ying at 1 m ** Measured per ISO-37 44 Main unit pow er requireme nts 120 V ac , 60 Hz, 15A, 1 phase Maximum fluid wor king pressure 70 psi, (4.9 bar) Maximum air working pressu re 50 psi, (3.5 bar) Compressor specifications Univ ersal motor thermally protected, oil-less Compre[...]

  • Page 34

    Graco Standard Warranty 34 311772G Graco Standar d W arranty Graco warrants all equipment ref erenced in this document which is manufactured b y Graco and bearing its name to be free from de fe ct s i n material and workmanship on the date of sale the original purchaser for us e. With the e xception of any special, e xtended, or li mited warranty p[...]