Graco 245924 A Series, Operation And Parts

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Spray Techniques
309584H 7
Spray Techniques
Recommended Nozzle Selection Chart
1
Control air volume with gun air valve.
2
For more material volume try a larger nozzle.
Adjusting the System
Sufficient fluid output (volume and pressure) and good
atomization is a balance of atomizing air, material
thickness/material flow and nozzle selection. Achieving
the correct balance for your application requires
experimentation to achieve desired results. Keep in
mind these important points when adjusting gun:
1 Select proper nozzle for your application. See
Nozzle Selection Chart. Remember, the larger the
nozzle, the heavier the pattern.
2 Start with gun air flow
valve completely open. If
needed, slowly close
gun air flow until you get
a good spray pattern.
3 Adjust air flow
adjustment nut and
air valve to achieve
uniform, round
spray pattern. It
may be necessary
to change spray
nozzles to achieve
the desired spray
pattern.
To Get Less Material
Try one or a combination of these methods:
• Open air valve.
• Turn gun flow adjustment nut to decrease flow,
counter-clockwise.
• Use smaller nozzle.
To Get More Material
Try any one or a combination of these methods:
• Close air valve.
• Turn gun flow adjustment nut to increase flow,
clockwise.
• Use thinner material mixture.
• Use a larger nozzle.
For Continuous Spraying
Use trigger lock to hold trigger open and reduce fatigue.
Check Material Consistency Periodically
Check and thin material as needed to maintain proper
consistency. The material may thicken as it sits and slow
down production. Agitate periodically.
Application
Nozzle Size
2
Air Volume
1
Simulated
Acoustic
6 mm, white
(fine to medium)
8 mm, gray
(coarse)
medium to high
Orange peel 4 mm, beige
6 mm, white
medium to high
Splatter coat 6 mm, white
8 mm, gray
low to medium
Knockdown 8 mm, gray
12 mm, black
low
ti2448a
ti2475a
• When adjusting flow nut, release trigger, then
adjust.
• If adjusting while triggered, needle will turn
but provide no adjustment.
• If nut will not turn, check to see if it is either
set to maximum adjustment or there is
material on threads. Clean threads as
needed.
• Test spray pattern on cardboard. Hold gun 18
to 24 in. (45.7 to 60.9 cm) from surface. Using
a circular motion, overlap each stroke.