Select A Fluid Nozzle And Air Cap; Adjust The Spray Pattern - Graco PRO Xs Instructions - Parts Manual

Operation
Select a Fluid Nozzle and Air
Cap
The gun is supplied with Part No. 197266 Nozzle and
24A276 Air Cap. If you require a different size, refer to
Table 2 and instruction manual 309419, or consult with
your Graco distributor. See Replace Air Cap/Nozzle on
page 30.
To reduce the risk of an injury, follow the Pressure
Relief Procedure procedure on page 15 before
removing or installing a fluid nozzle and/or air cap.
NOTE: Due to the larger needle diameter, use a nozzle
one size larger than you would use with a standard PRO
Xs gun (i.e., 1.5 mm = 1.2 mm flow area).
Table 2: Fluid Nozzles
Part No.
197265
197266
197267
249922*
249923*
249924*
* Glass-reinforced acetal construction.
16
Orifice Size
1.2 mm (.047 in.)
1.5 mm (.055 in.)
1.8 mm (.070 in.)
1.2 mm (.047 in.)
1.5 mm (.055 in.)
1.8 mm (.070 in.)

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.
1. Relieve pressure, page 15.
2. Loosen the air cap retaining ring, and rotate the air
cap for a vertical or horizontal spray pattern. See
F . 12. Tighten the retaining ring until the air cap is
IG
held firmly in place; you should not be able to rotate
the air cap horns by hand.
Vertical Pattern
Horizontal Pattern
F . 12. Air Cap Positions
IG
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.
4. Use the air pressure regulator on the atomization air
supply line (A1) to adjust the degree of atomization.
See F . 13. For example, for a fluid flow rate of 10
IG
ounces per minute (0.3 liters per minute), a typical
atomization pressure would be 20-30 psi (1.4-2.1
bar, 0.14-0.21 MPa) at the gun manifold.
313227E