Operation
7.Turn the main air supply ball valve to the open posi- tion. See FIG. 28.
8.Slowly turn the main air supply pressure regulator clockwise until the main air supply pressure gauge reads the desired pressure. See FIG. 28.
FIG. 28
9.Disengage trigger lock on the gun. See FIG. 29.
10.Pull trigger to begin dispensing. See FIG. 29.
FIG. 29
NOTE: In the following step, to minimize catalyst over- spray, use as little catalyst atomization air pressure as possible to achieve desired spray pattern. See the spray gun manual for instructions.
11.If the spray pattern has not already been set up to perform as desired, see RS gun manual for detailed instructions for how to optimize the spray pattern, including adjusting the AAC air pressure at the sys- tem or gun, and adjusting the catalyst atomization air.
no air | too little air | correct amount |
|
| of air |
FIG. 30: AAC Air Adjustment
12.After all pressure adjustments are made, spray a final test shot on a clean piece of paper. This shot should be approximately 5 ft long. Check desired gel times and uniformity of curing.
13.For internal mix proportioners only: When finished spraying engage trigger lock then point the gun into a waste container and use the solvent knob on the gun to move solvent through the gun to flush the gun.
14.For external mix proportioners only: When finished spraying, squirt the tip of the gun with solvent to remove any mixed material.
15.If necessary, use a brush to remove cured material from front of the gun.
16.If finished spraying for an extended period of time:
Follow Pressure Relief Procedure and Shutdown on page 24.
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