Graco AirPro 289028, Instruction & Parts Manual

Setup 

6

312578M

Adjust Spray Pattern

1. Rotate the air cap to achieve desired spray 

pattern. See F

IG

. 2

2. To achieve full fan pattern, open the air 

control valve by turning the knob fully coun-
terclockwise. See F

IG

. 3.

3. To create a round pattern, turn the pattern 

air off by turning the air control valve fully 
clockwise. See F

IG

. 3.

4. Trigger gun and adjust gun air pressure. 

Refer to 

Technical Data, 

page 17, for inlet 

air pressure.

5. To establish the correct fluid flow, turn the 

fluid control valve counterclockwise until no 
restriction of the trigger movement is felt, 
then turn out another half turn.

6. To reduce fluid flow, turn the fluid control 

valve clockwise.

7. Spray a test pattern. Evaluate the spray 

pattern size and atomization.

8. To achieve a narrow spray pattern, turn air 

control valve clockwise.

9. To improve atomization, reduce the fluid 

flow rate. Increasing the air pressure can 
improve atomization but may result in poor 
Transfer Efficiency (TE) or non-compliant 
operation.

F

IG

. 2

F

IG

. 3

ti4839a

fluid control valve

air control valve

ti11097a

air inlet valve

•

If the fluid control valve is turned clock-
wise all the way, the gun will emit only 
air.

•

If you cannot achieve the correct fluid 
flow with the fluid control valve, a differ-
ent sized nozzle may be necessary. 
For smaller fluid flow, use the next size 
smaller nozzle. For a larger fluid flow, 
use the next size larger nozzle.