User manual GRACO 207-388 F

[. . . ] General This equipment generates very high fluid pressure. 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. [. . . ] 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. Let all samples "cure", or harden, completely. 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. Close the material valves and starting timing the reaction. Flush the mixing chamber with solvent to remove the mixer material. When the material starts to gel, check how long the reaction has taken. This is the operating pot life of your material. 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. of heat created by friction of the mixing shaft with the motor. 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. Then close the valves before stopping the motor. 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. Requires 25 to 30 CFM at 106 psi (7 bar) for continuous operation. Check, adjust. Not enough air pressure or volume. Closed or clogged air valves (42) or lines. [. . . ] 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 . SEAT, ball 178-743 . HOUSING, valve 165-599 . STEM 208390 BALL VALVE (see 307-068 for parts) 167-767 HOUSING, mixer head QTY 1 z 2 : 3 3 1 z : 1 2 1 1 1 *Recommended `tool box" spare parts. Keep on hand to reduce down time. 3ow4o 9 4000 RPM AIR MOTOR 102-584 For materials which are more difficult to mix BALL VALVE KIT 218-412 Adapts Series E and older power mixers to new style ball valve and actuating lever style. [. . . ]