Adjust The Spray Pattern - Graco PRO Auto Xs Series Instructions-Parts List Manual

Adjust the Spray Pattern

Follow the steps below to establish the correct fluid flow
and air flow. Do not turn on the turbine air (TA) yet.
WARNING
Pressurized Equipment Hazard
To reduce the risk of an injury, follow the
Pressure Relief Procedure on page 17
whenever you are instructed to relieve the
pressure.
1. Relieve the pressure.
2. Loosen the air cap retaining ring, and rotate the air
cap for a vertical or horizontal spray pattern. See
F 11. Tighten the retaining ring until the air
IGURE
cap is held firmly in place; you should not be able to
rotate the air cap horns by hand.
Vertical Pattern
Horizontal Pattern
Fig. 11. Air Cap Positions
3. Adjust the fluid flow with the fluid pressure regulator.
Refer to instruction manual 309419 to set the fluid
pressure for various fluid flows, according to the size
of the fluid nozzle being used.
309297K
4. Use the air pressure regulator on the atomization air
supply line (A1) to adjust the degree of atomization.
See F 12. For example, for a fluid flow rate of
IGURE
10 ounces per minute (0.3 liters per minute), a typi-
cal atomization pressure would be 20-30 psi
(1.4-2.1 bar, 0.14-0.21 MPa) at the gun manifold.
5. Use the air pressure regulator on the fan air supply
line (A2) to adjust the pattern size.
• For the most efficiency, always use the lowest air
pressure possible.
• When increasing to a wide, flat pattern, it may be
necessary to increase the supply of fluid to the gun
to maintain the same amount of coverage over a
large area.
• See Spray Pattern Troubleshooting on page 29 to
correct spray pattern problems.
KV2
TA
CYL
A1
Fig. 12. Manifold Air Connections
Operation
KV1
A2
TI1577A
19