Graco PerformAA 15 Instructions - Parts Manual page 17

5. Turn the fan adjustment knob (21g) clockwise until
completely closed.
F . 17: Close the fan adjustment knob
IG
6. Set the atomizing air pressure to approximately 5
psi (34 kPa, 0.34 bar) when triggered.
F . 18: Set atomizing air pressure
IG
7. Spray the gun to check the spray pattern.
F . 19: Check spray pattern
IG
3A8099A
8. Slowly increase the inlet air pressure until the tails
are completely atomized and pulled into the spray
pattern. See F
21g
pressure
F . 20: Atomizing tails
IG
NOTE: Most spray material, especially low viscosity
materials, typically atomize at 7 to 10 psi (48 to 69 kPa,
0.48 to 0.7 bar). Setting the air pressure too high causes
material build-up on the air cap and decreases spray
efficiency.
9. Adjust the pattern width if desired.
F . 21: Spray pattern widths
IG
. 20.
IG
Too little air
No air
pressure
Wide pattern Narrow Pattern
(Standard)
Operation
Correct
amount of air
pressure
17