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Operating Manual
INSTRUCTIONS-PARTS LIST
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warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
Stainless Steel, Air-Operated
Bead Spray Gun
200 psi (13.8 bar) Maximum Working Pressure
Model 238338, Series A
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
ECOPYRIGHT 1996, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
308612
Rev. D
05949
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Summary of Contents for Graco 238338
- Page 1 INSTRUCTIONS Stainless Steel, Air-Operated Bead Spray Gun 200 psi (13.8 bar) Maximum Working Pressure Model 238338, Series A GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 ECOPYRIGHT 1996, GRACO INC. Graco Inc. is registered to I.S. EN ISO 9001 308612 Rev.
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Page 2: Table Of Contents
Warnings ........Installation . -
Page 3: Warnings
EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury. INSTRUCTIONS D This equipment is for professional use only. D Read all instruction manuals, tags, and labels before operating the equipment. D Use the equipment only for its intended purpose. If you are not sure, call your distributor. D Do not alter or modify this equipment. -
Page 4: Installation
NOTE: Reference numbers in parentheses in the text refer to the numbers in the Parts. Accessories are available from Graco. Be sure all accessories are properly sized to withstand the pres- sures in the system. Mount Valve Mount the valve on a 0.50 in. (12.7 mm) diameter rod on a mounting fixture or a dispensing machine. -
Page 5: Operation
Pressure Relief Procedure WARNING FLUID INJECTION HAZARD To reduce the risk of serious bodily inju- ry, including fluid injection,splashing in the eyes or on the skin, or injury from moving parts, always follow this procedure when- ever you shut off the pump, when checking or serv- icing any part of the dispensing system, when installing, cleaning, or changing part of the valve, and whenever you stop dispensing. - Page 6 Bead Delivery Lb/Min (kg/Min) Speed 4 (.48) 2.4 (1.09) 3.6 (1.63) 4.7 (2.13) 5.9 (2.68) 7.1 (3.22) 11.2 8.3 (3.76) 12.8 9.5 (4.31) 14.4 10.7 (4.85) 11.9 (5.40) 17.6 13.0 (5.90) 19.2 14.2 (6.44) (4.76) (4.08) (3.40) (bar) (2.72) (2.04) (1.36) (0.68) (2.27)
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Page 7: Maintenance
Clean Dispensing Valve and System Daily CAUTION Be sure that the solvent you use is compatible with the fluid being dispensed, to avoid clogging the valve’s fluid passages. An important part of the care and maintenance of your automatic dispensing valve is proper flushing. Flush the valve daily with a compatible solvent until all traces of fluid are removed from the valve passages. -
Page 8: Troubleshooting
NOTE: Check all possible solutions before disassembling the pump. Problem Uneven spray pattern Spray gun will not stop spraying Spray gun will not spray 308612 Troubleshooting Cause Bead pressure too low Gun needle binding Obstructed or worn needle seat Bead line clogged Bead valve closed Clogged orifice or needle seat No trigger or actuator air pressure... - Page 9 Notes 308612...
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Page 10: Parts
Model 238338 308612 Parts 19** 05950A... - Page 11 Model 238338 Ref. Part No. Description 238330 DEFLECTOR 191201** SEAT, valve 191196 NUT, retaining 191206 HOUSING, valve 166847 HOUSING, valve 101554 SET SCREW, 3/8–16 x 3/4 in. 191197 CAP, air cylinder 164739 SPRING, helical compression 164740 GUIDE, spring 164741 PISTON, air 156593* O-RING;...
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Page 12: Technical Data
Technical Data Maximum working pressure ..Operating pressure of air actuated trigger Minimum ......Maximum .