System Adjustment
System Adjustment
1. Open gun air valve (23).
23
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2.Test spray pattern on cardboard. Hold gun 18 to 30 in. (45 to 75 cm) from surface. Use this spray dis- tance for most applications. Overlap each stroke 50% in a circular motion.
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3.Adjust gun air valve (23) to achieve uniform, round spray pattern. It may be necessary to change spray nozzle to achieve desired spray pattern.
23
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NOTE: Keep a small amount of air flowing through 
air line and gun tip to prevent material from backing up needle.
4.To select correct nozzle for your applications, con- sider size of aggregate in material and coarseness of spray pattern. Remember the larger the nozzle, the larger the spray pattern. See Nozzle Selection, page 13.
NOTE: More air produces a finer finish; less air pro- 
duces a coarse finish.
5.When adjusting flow adjustment nut (b), release trig- ger (C), then adjust.
B
C
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If adjusting while triggered, needle will turn but provide no adjustment.
If flow adjustment nut will not turn, check to see if it is:
•Set to maximum adjustment, or
•If there is material on threads. Clean threads as needed.
6.Check material consistency often. Material may thicken as it sits and slow down production or affect spray pattern. Thin with mater as needed to main- tain proper consistency.
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