Instruction/ maintenance manual of the product 311772H Graco Inc.
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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.
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.
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.
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 .
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 P.
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 system • Install or clean spra y nozzle 1.
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).
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.
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).
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.
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.
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 .
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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 witch 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.
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 much air being used. P ar tially close gun air v alve t o reduce air flow .
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.
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 .
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 .
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 .
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 , .
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 .
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.
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.
An important point after buying a device Graco Inc. 311772H (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 Inc. 311772H 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 Inc. 311772H - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco Inc. 311772H you will learn all the available features of the product, as well as information on its operation. The information that you get Graco Inc. 311772H will certainly help you make a decision on the purchase.
If you already are a holder of Graco Inc. 311772H, 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 Inc. 311772H.
However, one of the most important roles played by the user manual is to help in solving problems with Graco Inc. 311772H. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco Inc. 311772H 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
