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Spray Techniques
309915D 17
System Adjustment
1 Open air valve (A). 2 Test spray pattern on card-
board. Hold gun 18 to 30 in.
(457 to 762 mm) from surface.
Use this spray distance for
most applications. Overlap
each stroke 50% in a circular
motion.
3 Adjust air valve (A) to achieve
uniform, round spray pattern. It
may be necessary to change
spray nozzle to achieve
desired spray pattern.
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, consider
size of aggregate in material
and coarseness of spray pat-
tern. Remember the larger the
nozzle, the larger the pattern.
See Nozzle Selection, page
16.
• More air produces a finer finish,
less air a coarser finish.
When adjusting flow adjustment
nut (B), release trigger (C), then
adjust.
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
.
Check material consistency
often. Material may thicken as it
sits and slow down production or
affect spray pattern. Thin with
water as needed to maintain
proper consistency.
ti4000a
A
ti4004a
ti3999a
A
C
B
ti4338a