User manual GRACO 207-388 F

[. . . ] Spray from the gun, leaks or ruptured components can inject fluid through your skin and into your body and cause extremely serious bodily injury, including the need for amputation. Also, fluid injected or splashed into the eyes can cause serious damage. NEVER point the spray gun or dispensing valve at anyone or at any part of the body. NEVER try to "blow back" fluid; this is NOT an air spray system. [. . . ] These standards-particularly the General Standards, Part 1910, and the Construction Standards, Part 1926-should be consulted. 306-W 3 INSTALLATION For assistance in setting up a plural component system, you should contact Grace Fluid Systems, 9451 West Belmont, Chicago, Illinois 60121-2891, (3121678-7200. This will help ensure that you select the proper type and size of equipment for your job. All inlet connections on this mixer have l/4 npt(m) threads. *_~I. , ;: , . , ~. . :. Install a bleed-type master air valve on the air line to shut off and relieve air to the mixer motor. Start and prime the solvent pump and check the flushing system before connecting the material hoses. ASSEMBLY OPERATION i Ii Determine Material Pot Life Determine Motor Air Pressure Setting Pull the actuating lever (29) back to close the inlet valves. Then refer to the separate operating instructions for your proportioning pump, and start the system. Open the air valve to start the mixer motor, then open the material inlet valves. Repeat this procedure five or six times, recording the air pressure setting for each sample. Place another waste container under the mixer outlet, start the mixer motor, and open the solvent valve. When clean solvent comes form the outlet, close and the solvent valve then stop the mixer motor. Select the sample which cured properly at the lowest air pressure and use that pressure for the mixer air supply. Repeat the test if none of the samples cured properly. To test the pot life, use a cup with approximately the same shape and size as the mixing assembly chamber; 1 cubic inch for Model 207389, or 2. 1 cubic inch for Model 207-390. Start the mixer motor and open the material valves to fill the container. When the material starts to gel, check how long the reaction has taken. Reduce that time by at least 10% to determine how long your system can remain idle without flushing or dispensing material. For example, if the pot life is 11 minutes, then 9 minutes is the maximum time that mixed material should be left in the mixing chamber and hoses before dispensing or flushing. CAUTION Always use the lowest possible air pressure as this produces the least amount. 306-940 NOTE: If the material pot life is 10 minutes or less, use the Grace Automatic Power Mixer. r 4 a, rarcup Start the mixer motor before opening the material valves. When you stop dispensing for 10 minutes or longer, stop the mixer motor to prevent heat build up caused by friction. Do not allow the system to stand idle for more than the mixed material pot life. For the most actuating lever used, you can you are ready Lubrication consistent results, always fully open the when dispensing. Hardened material in mixing chamber. Little or no Part A (Resin) coming out Material empty. supply container Plugged material inlet or check valve. *Be sure to read and observe the material manufacturer's literature before using any material In this system. 6 306-94-o To Inspect or Replace Drive Spline or Mixing Shaft If mixer motor runs but material is not mixed properly: Use a spanner wrench to unscrew the connecting housing retainer nut (23) CLOCKWISE off the air motor-it has left hand threads. [. . . ] lo-32 thd size; l/2" long PLATE, serial GASKET, copper NUT, plain knurled; l-5/8"-18 UNEF thd size GRIP, hand; lower, nylon GRIP, hand; upper, nylon SPRING, helical compression SEAT, check valve RETAINER, packing, female gland V-PACKING, PTFE SHAFT, mixer drive NUT, plain round; l-l/8"-12 UNF-2 thd size; packing nut GUIDE, spring; check valve BRACKET, mounting GLAND, packing; male QTY 3 2 3 2 2 1 2 1 1 2 : i r, 1 ; 1 1 REF PART NO. NO, 167-765 167-766 * 167-770 DESCRIPTION NUT, plain knurled; l-7/16" thd sz HEAD, power mixer SPRING, helical compression, check valve "168492 GASKET, copper; 7/8" dia. 178-747 SOLVENT VALVE LEVER 217561 ACTUATING LEVER 207-411 ADAPTER, swivel union, 45O; 3/8 npt(f) 213-040 BALL VALVE Series B Includes items 32-41 104893 . O-RING, PTFE 104892 . O-RING, PTFE 164-900 . BALL, valve 165-274 . NIPPLE, adapter, 1/4x 11/16 thd 165-964 . NUT, stem packing 178-745 . STEM, valve 172-094 . [. . . ]