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INSTRUCTIONS-PARTS LIST 308–235
Rev. F
This manual contains important
Supersedes Rev. E
warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
Flex Airless Spray Gun
5000 psi (345 bar) MAXIMUM WORKING PRESSURE
Model 235–457, Series C
Bare gun.
Model 237–691, Series B
Includes RAC IV DripLess Tip Guard, 517 size
SwitchTip, and 2 finger trigger.
Model 235–459, Series D
Includes RAC IV DripLess Tip Guard, 517 size
SwitchTip, and 2 finger trigger.
Model 235–459
Model 235–458, Seri
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Table of Contents Symbols Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Warning Symbol Installation/Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . 5 System Requirements . . . . . . . . . . . . . . . . . . . . . . . 5 WARNING How to Use the Gun Trigger Safety . . . . . . . . . . . 5 How to Use the Gun . . . . . . . . . . . . . . . . . . . . . . . . 6 This symbol alerts you t
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WARNING 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. Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate medi- cal attention. Do not point the gun at anyone or at any part of the body. Do not put your hand or fingers over the spray tip. Do not stop
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WARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result in a fire or explosion and serious injury. 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 identify and correct the problem. Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being sprayed. Keep the spray
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Installation/Operation Pressure Relief Procedure WARNING WARNING Be sure your system has a bleed-type master air valve (pneumatic pumps only) and a pressure drain INJECTION HAZARD valve. These accessories help reduce the risk of The system pressure must be manually serious bodily injury, including fluid injection, relieved to prevent the system from splashing in the eyes or on the skin, or injury from starting or spraying accidentally. Fluid moving parts, if you are adjusting or repairing the un
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Installation/Operation 7. If adjusting the pressure does not give a good How to Use the Gun spray pattern, follow the Pressure Relief Proce- 1. Guide a grounded fluid hose (with spring guard) dure on page 5 and then try another tip size. through the hose guard (14) and connect the hose to the gun inlet. See Fig. 2. 8. Use a full-open, full-close triggering action. Hold the gun about 14 in. (350 mm) from and at right 2. With no tip installed, start the pump. Flush the angles to the work surface.
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Installation/Operation 2. Remove the spray tip and blow out the obstruction How to Clean the Spray Tip by applying air to the front of the spray tip. Or, let and Clear a Spray Tip Obstruction. the spray tip and gun nozzle soak to dissolve the obstruction. If it won’t dissolve, jar it out by tapping the back of the spray tip against a flat surface. WARNING To reduce the risk of fluid injection or splashing in CAUTION the eyes or on the skin, do not hold a hand, body or rag in front of the spray
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Installation/Operation How to Check the Gun Diffuser Operation How to Flush the Gun. Always flush the pump and the gun before the fluid Check the diffuser operation weekly. The gun diffuser/ seat (2a) breaks up spray and reduces the risk of fluid being sprayed can dry in it. injection when the tip is not installed. Perform the test NOTE: If it is available, the flushing procedure below. If it fails, replace the entire Needle Kit, Part No. provided in your pump or sprayer manual should be 235–474
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Service 4. Insert a punch into the rear of the gun and tap it to CAUTION push the needle (2c*) out the front of the gun. See Fig. 7. Do not attempt to install an old style needle in this gun. The front of the new needle is marked with a + below the Graco symbol. Notes: Use Needle Kit 235–474. Use all the new parts for the best results. Parts included in the kit are shown with one asterisk, (2a*). Keep parts very clean. Dried paint or other contami- 2c nants cause friction which causes parts to w
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Service 7. Slide the rear of the needle (2c*) into the front of 8. Grease the end of the needle. the gun. Slide the tool (B), provided with the repair 9. Grease the diffuser/seat threads. Place the new kit, into the gun, around the needle. Lightly tap the gasket (2b*) on the diffuser/seat (2a*) and screw tool with a hammer or lightly press the tool against the assembly into the fluid housing (7). Torque to a flat surface to seat the needle. See Fig. 9. 20–25 ft-lb (27–34 N.m). See Fig. 6. Remove
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Parts 11 12 3 9 8 7 13 6 2 2 2c* 2b* 14 1 2a* 4 2d* 15 1 Lubricate, then torque to 20-25 ft-lb 1 (27-34 N.m) 2 Lubricate Torque to 30-40 in-lb 3 (3.4–4.5 N.m) 19 4 Purchase separately 18 01468 Model 235–459, Series D Ref Model 237–691, Series B No. Part No. Description Qty. ncludes RAC IV DripLess Tip Guard. 6 169–797 ADAPTER 1 Includes items 2 to 19 as indicated by model number. 7 187–972 FLUID HOUSING 1 8 187–985 TRIGGER 1 Model 235–457, Series C 9 102–207 SETSCREW, 1/4–20 1 Includes the Sta
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Notes
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Accessories FILTERS TOOLS NYLON BRUSHES 3000 psi (210 bar) Maximum Working Pressure. Use to thoroughly clean the gun’s fluid passages. Adequate filtering is important for a good surface finish and to minimize tip clogging. These filters provide 101–891 0.375” (9 mm) dia. secondary filtering. Various screen meshes are avail- 101–892 0.625” (16 mm) dia. able. Mounts in hose 213–068 Includes filter body, spring and one WRENCH 171–147 100 mesh screen. Fits all hexes on the gun. 213–069 Includes fil
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Technical Data Graco Phone Maximum Working Pressure . . . . . . 5000 psi (350 bar) Number Fluid Orifice Size . . . . . . . . . . . . . . . . . 0.090 in. (2.3 mm Wetted Parts . . . . . . . . . Stainless steel, Polyethylene, TO PLACE AN ORDER, contact your Graco distrib- Polyurethane, Nylon, PTFE utor, or call this number to identify the distributor Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 oz. (510 g) closest to you: 1–800–328–0211 Toll Free. Inlet . . . . . . . . . .
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Manual Change Summary Changed: Model 237–691, Series C To: Model 237–691, Series B
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The Graco Warranty and Disclaimers WARRANTY Graco warrants all equipment manufactured by it 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. As purchaser’s sole remedy for breach of this warranty, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven defec- tive. This warranty applies only when the equipment is installed,
