Instruction/ maintenance manual of the product 02748 Graco Inc.
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308–341 Rev . G Supersedes F First choice when quality counts. 02748 INSTRUCTIONS-P ARTS LIST INSTRUCTIONS This manual contains important warnings and information.
T able of Contents W arnings 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Selection Chart 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air Flow and Atomizing Pressure 5 .
W ARNING PRESSURIZED EQUIPMENT HAZARD Spray from the gun, hose leaks or ruptured components can splash fluid in the eyes or on the skin and cause serious injury . Do not stop or deflect fluid leaks with your hand, body , glove or rag.
Selection Chart Includes: Needle/ Nozzle/Air Cap Kit P/N Needle Assembly P/N Air Cap P/N Nozzle P/N Replacement Needle T ip P/N Orifice Size 949–276 238–703 185–794 185–756 191–564 0.020” (0.
308-341 5 Air Flow and Atomizing Pressure NOTE: All tests completed with the fan air fully open. Air Flow 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 15 25 35 45 55 65 75 .
6 308-341 Installation KEY A Optimiser 2K Spray Gun B Air Inlet; 1/4 npsm C Air Hose Recommend 5/16” (7.9 mm) ID hose; Optional 3/8” (9.
308-341 7 Installation Air Line Accessories The gun air line must have an air regulator (E) to control air pressure to the gun. See Fig. 1. If the gun air source does not have a filter , install a filter (F) on the gun air line to ensure a dry , clean air supply .
Setup and Shutdown Removing and Installing the Fluid Nozzle Follow this procedure whenever you remove and install a fluid nozzle. See page 4 to select a nozzle or needle/nozzle/air cap kit. 1. Follow the Pressure Relief Procedure on page 7.
308-341 9 Setup and Shutdown W ARNING EQUIPMENT MISUSE HAZARD This gun is for use with water-based contact adhe- sives only . Any other use of the gun could cause unsafe operating conditions or damage to the gun. 1. Connect the air line.
Setup and Shutdown 4. Connect the activator tube. A. Connect the fitting (V) and tube (M) to the gun activator inlet. See Fig. 10. B. Connect the other end of the fluid tube (M) to a regulated fluid supply line or a pressure tank.
Setup and Shutdown 6. Adjust the spray pattern. (continued) C. Hold the gun parallel to the floor and adjust the adhesive fluid pressure until you have a 1 to 6 inch (25.4 to 152.4 mm) straight fluid stream before the stream falls of f.
Setup and Shutdown 6. Adjust the spray pattern. (continued) F. Set the gun air supply pressure at 40 psi (2.
Ratio Check NOTE: Y ou cannot sample the adhesive and activator at the same time. The adhesive must be checked with the atomizing air of f, while the activator must be checked with the atomizing air on.
Daily Gun Care, Flushing, and Cleaning CAUTION Do not point the gun up while cleaning it as this may allow fluid to enter the gun air passages. Do not use metal tools to clean the air cap holes as this may scratch them and distort the spray pattern.
308-341 1 5 Daily Gun Care, Flushing, and Cleaning 3. Clean the gun. (continued) B. Disconnect the air supply line (C). See Fig. 24. 02800 C Fig. 24 C. Remove the air cap ring (12), air cap (19), air cap seal (47), and fluid nozzle (20) as instructed on page 8.
1 6 308-341 Daily Gun Care, Flushing, and Cleaning 3. Clean the gun. (continued) G. Install the fluid nozzle (20) air cap seal (47), air cap ring (12), and air cap (19) as instructed on page 8. H. Dampen a soft cloth with soapy water; squeeze out the excess water .
308-341 1 7 T roubleshooting PROBLEM CAUSE SOLUTION Fluid flow is fluttering while spraying 1. Fluid nozzle is not tight enough 2. Fluid filter is clogged 3. Fluid adjustment knob is not properly set 4. Baffle (item 1 1) is installed wrong or damaged 1.
Service Items Needed for Service Gun W rench – provided Seal Installation T ool – provided Adjustable W rench Screw Driver Part No. 1 1 1–265 Lubricant Soap and water NOTE: Gun Repair Kit 949–285 is available; see page 25.
308-341 1 9 Service 10. Use the threaded end of the fluid needle (21) to push out the u-cup seal (33). See Fig. 33. Fig. 33 21 02760 11 . Remove and disassemble the activator valve (49). See Fig. 34. Use the threaded end of the activator needle (49d) to push out the needle packings (49g and 49r).
Service Assemble NOTE: See Fig. 34, page 19, for the parts that need to be lubricated. 1. Insert the fluid needle (21) through the front of the gun as shown in Fig. 35. Install the new packing assembly (39) by placing them on the end of the needle tip.
Service 6. Slide the new air valve (14) onto the fluid needle (21) until it is against the nut (B). See Fig. 38. 7. Install the fluid needle (21) and air valve (14) into the back of the gun. 02764 Fig.
Service 13. Install the spring (15) and fluid adjustment nut (6). T ighten the nut to 25 to 35 in-lbs (2.8 to 4.0 N m). See Fig. 42. 14. Install the spring (16) and fluid adjustment knob (8).
Service 12 11 15 16 8 33 14 3 4 32 19 20 49e 39 31 6 22 21 1 1 48 52 51 49e 49 53 49a 49c 49b 49e 49f 49h 49d 49m 8 47 17 52 2 49p 49j 49q 49r 49g 05885 49k 55 5 Fig. 42 1 T ighten to 25–35 in-lbs (2.
Parts Drawing 12 11 15 16 8 33 14 3 13a 2 4 32 25 19 20 13c 13b 13d 5 39 31 6 22 21 1 Ref No.
Parts List Part No. 949–239, Series C Optimiser 2K HVLP Spray Gun Ref No. Part No. Description Qty 1 238–139 GUN BODY 1 2 190–247 PLA TE, gun 1 3 185–761 TRIGGER, gun 1 4 625–723 PIN, pivot 1 5 203–953 SCREW , lock; No.
T echnical Data Maximum W orking Fluid and Air Pressure 100 psi (7 bar) . . . . . . . . . . . . . . . . . . . . Weight 17.5 oz. (0.5 kg) . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notes.
The Graco W arranty and Disclaimers 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.
An important point after buying a device Graco Inc. 02748 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Graco Inc. 02748 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Graco Inc. 02748 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco Inc. 02748 you will learn all the available features of the product, as well as information on its operation. The information that you get Graco Inc. 02748 will certainly help you make a decision on the purchase.
If you already are a holder of Graco Inc. 02748, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Graco Inc. 02748.
However, one of the most important roles played by the user manual is to help in solving problems with Graco Inc. 02748. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco Inc. 02748 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
