Install The Spray Tip; Fill The Fluid Supply; Set The Atomization Fluid Pressure - Graco 333013B Instructions - Parts Manual

Install the Spray Tip

To reduce the risk of an injury, follow the Pressure
Relief Procedure before removing or installing the
spray tip or air cap/tip guard.
Install the spray tip as explained in Air Cap/Tip Guard,
Spray Tip, and Fluid Seat Housing Replacement,
page 39.
1. Follow the Pressure Relief Procedure, page 22.
2. Align the spray tip tab with the groove in the air cap.
Install the tip.
F . 14 Spray Tip Alignment
IG
3. Install the air cap and retaining ring. Orientate the
air cap and tighten the retaining ring securely. Be
careful not to damage the electrode.
F . 15 Install Air Cap Assembly
IG
To reduce the risk of fire, explosion, or electric
shock, never operate the gun with a damaged
electrode.

Fill the Fluid Supply

1. Follow the Fluid Voltage Discharge and Ground-
ing Procedure, page 22.
2. Follow the Pressure Relief Procedure, page 22.
3. Open the isolated enclosure door.
333013B
4. Remove the pail cover from the pail, holding a rag
over the suction tube strainer to prevent any fluid
from dripping into the isolated enclosure. Place the
cover and suction tube outside the enclosure.
5. Remove the supply pail from the enclosure.
NOTICE
Be sure to wipe up all fluid spills in the isolated enclo-
sure. Fluid can create a conductive path and cause the
system to short out.
6. Clean up any fluid spills in the enclosure, using a
soft cloth and a non-flammable, compatible solvent.
7. Fill the supply pail with fluid and return it to the
enclosure. Clean up any spills.
8. Reinstall the pail cover, holding a rag over the suc-
tion tube strainer to prevent fluid spills while you
place the pump suction tube in the pail.
9. Close the isolated enclosure door and fasten
securely with the T-handle locking screw.
Set the Atomization Fluid
Pressure
Atomization fluid pressure will vary based on the viscos-
ity of the fluid, flow rate desired, and other system char-
acteristics.
1. Turn off the turbine air (TA), atomization air (A1),
and fan air (A2).
2. Start the pump. Set the fluid regulator to 400 psi (2.8
MPa, 28 bar).
3. With the turbine air (TA), atomization air (A1), and
fan air (A2) turned off, spray a test pattern, holding
the gun 12 in. (305 mm) from the surface. Examine
the particle size. Do not be concerned about the
presence of tails; they will be removed in step 6.
4. Increase the fluid pressure in small increments.
Spray another pattern and compare the particle
size. Smaller particle size indicates improved atomi-
zation.
To reduce the risk of injury, never exceed the
maximum working pressure on the lowest rated
system component. Maximum working pressure of
this equipment is 3000 psi (21 MPa, 210 bar).
Operation
23