Graco Inc 238338 Users Manual 308612D Bead Spray Gun Instructions Parts List
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2015-02-09
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INSTRUCTIONS-PARTS LIST 308612 Rev. D This manual contains important 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 05949 GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN ECOPYRIGHT 1996, GRACO INC. Graco Inc. is registered to I.S. EN ISO 9001 55440–1441 Table of Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 5 7 7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Graco Phone Number . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Symbols Warning Symbol Caution Symbol WARNING CAUTION This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions. This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions. WARNING PRESSURIZED EQUIPMENT HAZARD Beads sprayed from the gun, leaks or ruptured components can splash in the eyes and cause serious injury. D Do not point the gun at anyone or at any part of the body. D Do not put your hand or fingers over the spray tip. D Do not stop or deflect leaks with your hand, body, glove or rag. D Follow the Pressure Relief Procedure on page 5 if the spray tip clogs and before cleaning, checking or servicing the equipment. D Tighten all fluid connections before operating the equipment. D Check the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately. 2 308612 WARNING 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. D Check equipment daily. Repair or replace worn or damaged parts immediately. D Do not exceed the maximum working pressure of the lowest rated system component. Refer to the Technical Data on page 12 for the maximum working pressure of this equipment. D Do not use hoses to pull equipment. D Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose Graco hoses to temperatures above 82_C (180_F) or below –40_C (–40_F). D Do not lift pressurized equipment. D Comply with all applicable local, state, and national fire, electrical, and safety regulations. 308612 3 Installation NOTE: Reference numbers in parentheses in the text refer to the numbers in the Parts. Grounding Accessories are available from Graco. Be sure all accessories are properly sized to withstand the pressures in the system. To reduce the risk of static sparking, ground the pump, bead spray gun, paint spray gun and all other system equipment. Proper grounding is essential to maintaining a safe system. 1. Pump: use a ground wire and clamp. Mount Valve 2. Air compressors and hydraulic power supplies: follow manufacturer’s recommendations. Mount the valve on a 0.50 in. (12.7 mm) diameter rod on a mounting fixture or a dispensing machine. The bead gun has a clamping set screw (6) for mounting. 3. Air and fluid hoses connected to the pump: use only grounded hoses with a maximum of 500 feet (150 m) combined hose length to ensure grounding continuity. Connect the Air Lines 4. Dispensing valve: obtain grounding through connection to a properly grounded fluid hose, frame and pump. 5. Fluid supply container: according to local code. Clean all lines and connections of dirt, burrs, etc. and blow them out with clean air before connecting them to the system. Install an air filter in the air supply line to remove harmful dirt and moisture from the compressed air. 4 308612 6. All solvent pails used when flushing: ground according to local code. Use only metal pails, which are conductive. Do not place the pail on a nonconductive surface, such as paper or cardboard, which interrupts the grounding continuity. Operation Pressure Relief Procedure WARNING FLUID INJECTION HAZARD To reduce the risk of serious bodily injury, including fluid injection,splashing in the eyes or on the skin, or injury from moving parts, always follow this procedure whenever you shut off the pump, when checking or servicing any part of the dispensing system, when installing, cleaning, or changing part of the valve, and whenever you stop dispensing. 1. Shut off the air supply to the bead tank. Bleed the bead tank. 2. Close the bleed-type master air valve (required with air-powered pumps). 3. Actuate the dispensing valve to relieve pressure. 4. Leave the drain valve(s) open until you are ready to dispense again. If you suspect that the dispensing valve or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, very slowly loosen the hose end coupling and relieve pressure gradually, then loosen completely. Now clear the valve or hose. Adjustments Set the actuating air to at least 50 psi (3.5 bar) and start the pump. Set the glass bead supply tank pressure between 30 psi and 75 psi for desired flow rate. Note: Bead delivery will vary with each application. Always test the system for actual delivery and adjust air pressure or nozzle size as needed. Application Data See Road Lazer System Manual 308611. Nozzle Size Selection Use the Nozzle Size Selection and Bead Delivery Tables to select the size of nozzle for the travel speed and bead coverage to be used. These tables are based on a 15 mil paint application. 1. Go to Bead Delivery (Lb/Min) Table and select: a. Speed in MPH or KPH row. b. Bead coverage in Pounds Per Gallon column. c. Value at intersection of MPH row and Pounds Per column is bead delivery in lb/min. 2. Go to Nozzle Size Selection Table and select: a. Bead Delivery (lb/min) column determined by Bead delivery (lb/min) value. b. Psi value Glass Bead Tank psi row. c. Curve (1, 2, 3 or 4) at intersection of Glass Bead Tank psi row and Bead Delivery (lb/min) column is nozzle size value. d. Select nozzle size that allows range of adjustment for more or less flow. 308612 5 Operation Bead Delivery Lb/Min (kg/Min) Speed Bead Coverage in Pounds Per Gallon (kg/L) MPH KPH 4 (.48) 5 (.60) 6 (.72) 7 (.84) 8 (.96) 9 (1.08) 2 3.2 2.4 (1.09) 3.0 (1.36) 3.6 (1.63) 4.1 (1.86) 4.7 (2.13) 5.3 (2.40) 3 4.8 3.6 (1.63) 4.4 (2.0) 5.3 (2.40) 6.2 (2.81) 7.1 (3.22) 8.0 (3.62) 4 6.4 4.7 (2.13) 5.9 (2.68) 7.1 (3.22) 8.3 (3.76) 9.5 (4.31) 10.7 (4.85) 5 8 5.9 (2.68) 7.4 (3.36) 8.9 (4.04) 10.4 (4.72) 11.9 (5.40) 13.3 (6.03) 6 9.6 7.1 (3.22) 8.9 (4.04) 10.7 (4.85) 12.4 (5.62) 14.2 (6.44) 16.0 (7.26) 7 11.2 8.3 (3.76) 10.4 (4.72) 12.4 (5.62) 14.5 (6.58) 16.6 (7.53) 18.7 (8.48) 8 12.8 9.5 (4.31) 11.9 (5.40) 14.2 (6.44) 16.6 (7.53) 19.0 (8.62) 21.3 (9.66) 9 14.4 10.7 (4.85) 13.3 (6.03) 16.0 (7.26) 18.7 (8.48) 21.3 (9.66) 24.0 (10.9) 10 16 11.9 (5.40) 14.8 (6.71) 17.8 (8.07) 20.7 (9.39) 23.7 (10.8) 26.7 (12.1) 11 17.6 13.0 (5.90) 16.3 (7.39) 19.6 (8.89) 22.8 (10.3) 26.1 (11.8) 29.3 (13.3) 12 19.2 14.2 (6.44) 17.8 (8.07) 21.3 (9.66) 24.9 (11.3) 28.4 (12.9) 32.0 (14.5) Nozzle Size Selection (4.76) 70 1 Glass Bead Tank psi (4.08) 60 2 3 4 5 (3.40) 50 (bar) (2.72) 40 (2.04) 30 (1.36) 20 (0.68) 10 0 0 5 (2.27) 10 (4.54) ORIFICE DIAMETER 1 0.203 3 0.280 2 0.234 4 0.344 5 0.420 6 308612 15 (6.80) 20 (9.07) 25 (11.3) 30 (13.6) Bead Delivery lb/min (kg/min) 35 (15.9) 40 (18.2) 45 (20.4) Maintenance Clean Dispensing Valve and System Daily Clean the outside surfaces of the valve by wiping with a soft cloth dampened with a compatible solvent. 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. Follow the Pressure Relief Procedure on page 5 before flushing. CAUTION Never immerse the entire dispensing valve in solvent. Immersing in solvent removes lubricants and tends to damage packings. To remove a hardened particle from the orifice, blow air through the orifice from the front. Service Needle, Seat and Packings 10. Install seal nut (21). To clean or replace the needle (18), its seat (17) or packings (19 or 15), proceed as follows: 11. Install gun needle (18). 1. Follow Pressure Relief Procedure on page 5 12. Install o-ring (19) on valve seat (2) and insert into valve housing (4). 2. Remove retaining nut (3). 3. Remove valve housing (4). 4. Remove valve seat (2) and o-ring (19) from valve housing (4). Remove o-ring. 13. Install retaining nut (3). Air Piston, Spring and Seals 7. Remove o-ring (15). Follow the Pressure Relief Procedure on page 5, then remove the valve as explained, preceding. Remove the air cylinder cap (7), take out the spring (8) and pull the piston (10) out. Clean and inspect all parts. Check the piston o-rings (11, 12) carefully. Lubricate all parts with a light waterproof grease and reassemble the valve using new parts as necessary. 8. Clean all parts. Repair Kit 9. Lubricate o-ring (15) with one drop of oil. Install o-ring. Repair Kit 238340 includes the parts listed with an * in Parts on page 11. 5. Remove gun needle (18). 6. Remove seal nut (21). 308612 7 Troubleshooting NOTE: Check all possible solutions before disassembling the pump. Cause Problem Solution Uneven spray pattern Bead pressure too low Increase pressure to bead tank, or adjust bead pressure regulator Spray gun will not stop spraying Gun needle binding Clean, repair Obstructed or worn needle seat Clean or replace Bead line clogged Clear Bead valve closed Open Clogged orifice or needle seat Clean No trigger or actuator air pressure Check, clean air lines Wet beads Drain beads from tank and replace with dry beads. Spray gun will not spray 8 308612 Notes 308612 9 Parts 7 Model 238338 8 9 11* 10 12* 13* 6 14 5 4 15* 16 21* 17 18* 19** 2** 20 3 1 05950A 10 308612 Parts Model 238338 Ref. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Part No. Description 238330 191201** 191196 191206 166847 101554 191197 164739 164740 164741 156593* 155685* 191195* 102300 158486* DEFLECTOR SEAT, valve NUT, retaining HOUSING, valve HOUSING, valve SET SCREW, 3/8–16 x 3/4 in. CAP, air cylinder SPRING, helical compression GUIDE, spring PISTON, air O-RING; nitrile rubber PACKING, O-ring TUBE, protection NUT, jam, 7/8 in. hex; 9/16–18 nf PACKING,O-ring NUT, packing SEAT, needle NEEDLE, gun O-RING RING, retaining, external NUT, seal (Includes 16 and 17) 191192* 166702** 113463 238341* Qty. * Included in Repair Kit 238340. Order separately. ** The Road Lazer ships with the three Valve Seat & O-ring Kits listed in the following table: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Ref. No. Part No. Description Qty. Valve Seat & O-ring Kits Valve Seat Nozzle Size Kit (Includes O-ring) 0.203 238663 0.234 238666 0.281 238664 0.334 238665 0.420† 243668 † Nozzle size 0.420 is optional; order separately Accessories Wide Bead Deflector Kit 239695 Allows application of 12 in. wide beaded lines. 308612 11 Technical Data Maximum working pressure . . . . . . . . . 200 psi (12 bar) Operating pressure of air actuated trigger Minimum . . . . . . . . . . . . . . . . . . . . . . . . 50 psi (3 bar) Maximum . . . . . . . . . . . . . . . . . . . . . . 200 psi (12 bar) Air connection . . . . . . . . . . . . . . . . . . . 1/4 npt(f) air inlet Bead connection . . . . . . . . . . . . . . . 3/4 npt(f) bead inlet Glass bead output . . . . 2 to 40 lb/min (.9 to 18 kg/min) Air consumption . . . . . . . . . . . . . . . . . . . . . . . . 2 to 7 cfm Spray width . . . . . . . . . . . . . . . 2 to 12 in (50 to 304 mm) Graco Phone Number TO PLACE AN ORDER, contact your Graco distributor, or call this number to identify the distributor closest to you: 1–800–690–2894 Toll Free Graco Warranty Graco warrants all equipment 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. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written recommendations. This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non–Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco. This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation. THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale. Graco makes no warranty, and disclaims all implied warranties of merchantability and fitness for a particular purpose in connection with accessories, equipment, materials or components sold but not manufactured by Graco. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties. In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the negligence of Graco, or otherwise. FOR GRACO CANADA CUSTOMERS The parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procedures concernées. ADDITIONAL WARRANTY COVERAGE Graco does provide extended warranty and wear warranty for products described in the “Graco Contractor Equipment Warranty Program”. All written and visual data contained in this document reflects the latest product information available at the time of publication. Graco reserves the right to make changes at any time without notice. Sales Offices: Atlanta, Chicago, Detroit Foreign Offices: Belgium, Korea, Hong Kong, Japan GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN http://www.graco.com PRINTED IN U.S.A. 308612 March 1996, Revised 02/2000 12 308612 55440–1441
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