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Graco 238894 manual

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Table of contents for the manual

  • Page 1

    ST AINLESS STEEL, W A TERBASE-COMP A TIBLE, HIGH PRESSURE Fluid Pressure Regulators U.S. Patent No. 4942899 Instructions–Parts List 06540A 06288 06290 Model 238890, 238892 (spring-operated) Model 238894 (air-operated) Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. See page 2 for List of M[...]

  • Page 2

    2 308647 T able of Contents List of Models 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W arnings 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operation 8 . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 3

    3 308647 Symbols W arning Symbol W ARNING This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions. Caution Symbol CAUTION This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions. W ARNING INSTRUCTIONS EQUIPMENT MISUSE HAZARD Equipment[...]

  • Page 4

    4 308647 W ARNING SKIN INJECTION HAZARD Spray from the gun, leaks, or ruptured components can inject fluid into your body and cause extremely serious injury , including the need for amputation. Fluid splashed in the eyes or on the skin can also cause serious injury . D Fluid injected into the skin might look like just a cut, but it is a serious inj[...]

  • Page 5

    5 308647 Notes[...]

  • Page 6

    6 308647 Installation H Multiple Circulating Spray Station Key A Air regulator B Bleed-type master air valve C Pump D Fluid filter and drain valve E Main fluid supply line F Gun fluid supply line G Fluid regulator with fluid pressure gauge (H) H Fluid pressure gauge J Air-assisted airless spray gun K Back pressure valve L Fluid return line M Main c[...]

  • Page 7

    7 308647 Installation Grounding the System W ARNING FIRE AND EXPLOSION HAZARD Before operating the fluid pressure regulator , ground the system as explained below . Pump: Use a ground wire and clamp. Loosen the grounding lug locknut (W) and washer (X). Insert one end of a 1.5 mm @ (12 ga) minimum ground wire (Y) into the slot in lug (Z) and tighten[...]

  • Page 8

    8 308647 Operation Adjusting the System Pressure CAUTION D The new system must be cleaned and tested thoroughly before admitting fluid to the regulator to avoid contaminants clogging or damaging the regulator . D Always use the lowest possible air and fluid pressures for your application. High pressures can cause premature spray tip, regulator , an[...]

  • Page 9

    9 308647 Operation Flushing D Flush before changing colors, before fluid can dry in the equipment, at the end of the day , before storing, and before repairing equipment. D Flush at the lowest pressure possible. Check connectors for leaks and tighten as necessary . D Flush with a fluid that is compatible with the fluid being dispensed and the equip[...]

  • Page 10

    10 308647 T roubleshooting W ARNING T o reduce the risk of serious bodily injury , including skin injection, splashing in the eyes or on the skin, or injury from moving parts, always follow the Pres- sure Relief Procedure on page 5 whenever the pump is shut off, before installing, cleaning, adjust- ing, removing, or servicing the valve or any part [...]

  • Page 11

    1 1 308647 Service Service Kits For the Fluid Diaphragm Repair Kit, order Part 238747. Parts included in this kit are marked with an asterisk, for example (7*), in the Parts Drawings and Lists on pages 14 and 16. For the Cartridge Repair Kit, order Part 238748 for all models except 248090. Parts included in this kit are marked with a dagger , for e[...]

  • Page 12

    12 308647 Service Replacing the Fluid Diaphragms See Fig. 3, and follow the steps below . For parts that are not called out in Fig. 3, see the Parts Drawing on page 14. 1. Relieve the pressure , and remove the regulator from the fluid line. W ARNING T o reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow[...]

  • Page 13

    13 308647 Service Replacing the Cartridge See Fig. 3, and follow the steps below . For parts that are not called out in Fig. 3, see the Parts Drawing on page 14. CAUTION Handle the hard carbide parts, which are the ball (16), valve actuator (1), and valve seat (14), carefully to avoid damaging them. 1. Relieve the pressure. W ARNING T o reduce the [...]

  • Page 14

    14 308647 Parts Drawing Models 238889, 238890, 238891, and 238892 06289 T orque to 140 to 160 in-lb (16 to 18 N S m). 238889 with EZ Flush gauge port plug 238890 with fluid pressure gauge Spring-Operated Regulator 500 to 3000 psi (3.4 to 21 MPa, 34 to 207 bar) Regulated Fluid Outlet Pressure 3 1 19* 1 T orque to 25 t o 30 in-lb (2.8 to 3.4 N S m). [...]

  • Page 15

    15 308647 Parts List Models 238889, 238890, 238891, and 238892 Ref. Part No. Description Qty . 1 * ACTUA TOR 1 2 238858 COVER, spring 1 3 { 191577 NUT , spring retainer 1 4 191578 BASE HOUSING; sst 1 5 { 191579 V AL VE HOUSING; sst 1 6 191580 RET AINER, spring, guide 1 7 * PLUNGER, spring 1 8 191583 PLA TE, backing 1 9 1 13623 BASE HOUSING SCREW , [...]

  • Page 16

    16 308647 Parts Drawing Models 238893, 238894, 248090, and 255072 9 T orque to 25 t o 30 in-lb (2.8 to 3.4 N S m). 238893 with EZ Flush gauge port plug 238894 with fluid pressure gauge 248090 with fluid pressure gauge for LASD material 255072 High Resolution Air-Operated Regulator 100 psi (0.7 MPa, 7 bar) Maximum Inbound Air Pressure 500 to 4000 ps[...]

  • Page 17

    17 308647 Parts List Models 238893, 238894, 248090, and 255072 Ref. No. Part No. Description Qty . 1 * ACTUA TOR 1 2 } 191584 HOUSING ADAPTER 1 3 {n 191577 NUT , spring retainer 1 4 191578 HOUSING, base, for Models 238893 and 238894 1 197952 HOUSING, base, for Model 248090 1 15J923 HOUSING, base, for Model 255072 1 5 {n 191579 V AL VE HOUSING, sst [...]

  • Page 18

    18 308647 Parts Drawing Model 244734 TI1373 9 T orque to 25 t o 30 in-lb (2.8 to 3.4 N S m). 244734 with EZ Flush gauge port plug Air-Operated Regulator , Full Range 100 psi (0.7 MPa, 7 bar) Maximum Inbound Air Pressure 500 to 4000 psi (3.4 to 28 MPa, 34 to 276 bar) Regulated Fluid Outlet Pressure 1* } 2 3 { 4 5 { 8 11 } 12* 13* 19* 14 { 15 { 18 { [...]

  • Page 19

    19 308647 Parts List Model 244734 Ref. No. Part No. Description Qty . 1 * ACTUA TOR 1 2 } 191584 HOUSING ADAPTER 1 3 { 191577 NUT , spring retainer 1 4 197952 REGULA TOR HOUSING 1 5 { 191579 V AL VE HOUSING; sst 1 6 } 191585 ROD, piston 1 7 * PLUNGER, spring 1 8 191583 PLA TE, backing 1 9 1 13623 BASE HOUSING SCREW , cap, socket-head; M10 x 1.5 x 7[...]

  • Page 20

    20 308647 T echnical Data Model 238890 spring operated, with fluid pressure gauge M d l 238889 Model 238892 spring operated, with fluid pressure gauge M d l 238891 Models 238894, 248090 , and 255072 air operated, with fluid pressure gauge Model 244734 air operated, with pressure sensor ports Model 238889 spring operated, with EZ Flush plug Model 23[...]

  • Page 21

    21 308647 0 1000 2000 3000 4000 5000 6000 0.0 0.5 1.0 1.5 2.0 Performance Chart (3.8) (5.7) (7.6) FLUID FLOW psi (MPa, bar) T est Conditions Regulators tested in oil at 70 _ F (21 _ C) and at 6000 psi (41 MPa, 414 bar) inbound fluid pressure. Key 65 cp oil 3000 cp oil REGULA TED (outbound) FLUID PRESSURE gpm (lpm) (1.9) Fluid Pressure Regulators, M[...]

  • Page 22

    22 308647 Notes[...]

  • Page 23

    23 308647 Dimensional Drawings 06288 06290 Models 238889 and 238891 with port plug Models 238890 and 238892 with gauge (spring operated) Model 238893 with port plug Model 238894 with gauge Models 248090 and 255072 with gauge and 1/2 npt inlet and outlet ports (air operated) A A Height: 8.9 in. (225 mm) B Diameter of base housing: 2.65 in. (70 mm) B[...]

  • Page 24

    24 308647 Graco Standard W arranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from de fec ts in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, [...]