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Graco 203831 manual

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Table of contents for the manual

  • Page 1

    Instructions–Parts List 306563K ENG Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. LOW PRESSURE Fluid Regulator For accurate, positive control of fluid pressure to one spray gun, dispensing valve, or atomizing head. For professional use only . 250 psi (18 bar , 1.8 MPa) Maximum Inbound Pr[...]

  • Page 2

    2 306563 T able of Contents W arnings 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operation 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T roubleshooting 7 . . . . . . . . . . . . . . . . . . . . [...]

  • Page 3

    3 306563 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 is a serious injury . The injury may look like just [...]

  • Page 4

    4 306563 W ARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re- sult in a fire or explosion and serious injury . D If there is any static sparking or you feel an electric shock while using this equipment, stop spray- ing immediately. Do not use the equipment until you i[...]

  • Page 5

    5 306563 Installation F E A C G D H B A B C D E F G H Regulator Dispensing Unit Gauge Regulator Inlet Regulator Outlet Air Regulator Supply Line Accessory Outlet KEY Fig. 1 03363 TYPICAL INST ALLA TION CAUTION Before installing the regulator , check the tightness of the screws (1). Refer to Fig. 3 for the tightening sequence and the torque value. I[...]

  • Page 6

    6 306563 Operation W ARNING T o reduce the risk of component rupture, which can cause a fire or explosion and result in serious bodily injury , including splashing in the eyes, never exceed 250 psi (18 bar , 1.8 MPa) Maximum Inbound Fluid Pressure to this regula- tor . CAUTION Do not pressure test the regulator with air; use solvent. Air may cause [...]

  • Page 7

    7 306563 T roubleshooting Problem Cause Solution No pressure regulation Damaged diaphragm Replace diaphragm (31). Fluid leaks under cap Loose cap, worn gasket T ighten screws (1), replace gasket (32). Damaged diaphragm Replace diaphragm (31). Pressure creeps above setting Loose cap T ighten screws (1). Worn gasket Replace gasket (32). Damaged diaph[...]

  • Page 8

    8 306563 Service Regulator Disassembly Shut off pump, close shutof f valve and relieve pressure in regulator by triggering the spray gun. Remove the regulator from the system. 1. Using the hex end of key (25), adjust screw (20) all the way counterclockwise to relieve regulator spring tension. 2. Remove outlet bushing (15) and counter-balance spring[...]

  • Page 9

    9 306563 Notes[...]

  • Page 10

    10 306563 Parts 03374 Fig. 4 1 3 4 2 25 1 1 17 34 4 3 20 2 2 12 13 30 10 21 9 31 3 32* 33* 28* 27* 16 14 2 *7 4 5 5 26 29 22* 15 19 See torque sequence in Fig. 3. Lubricate with grease. side down. Lubricate with oil. Apply sealant to threads. *5 4 11 T orque to 70–80 in-lb (8–9 N S m). 4 6 6 7 7 4 T orque to 30–35 ft-lb (41–47 N S m) PTFE[...]

  • Page 11

    11 306563 Parts Ref No. Part N o. Description Qty . Ref No. Part No. Description Qty . 1 101682 SCREW , soc hd cap; 1/4–20 x 5/8 6 2 101754 PLUG, pipe; hex soc; 3/8 npt 1 3 101971 RACE, thrust; adjusting nut 1 4 101972 BEARING, needle thrust 1 5* 187875 GAUGE, fluid pressure; 0–30 psi (0–2 bar) (Model 204500 only) 1 101 180 GAUGE, fluid press[...]

  • Page 12

    12 306563 The Graco W arranty and Disclaimers W ARRANTY Graco warrants all equipment listed in this manual which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. Graco will, for a period of twelve months from th[...]