Spray; Circulating Zinc Fluids - Graco xtreme Instruction Manual

Spray

Spray
CAUTION
Do not allow pump to run dry. It will quickly accelerate
to a high speed causing damage.
1. Prime. See Prime/Flush, page 14.
2. Follow Pressure Relief Procedure, page 13.
3. Install tip and tip guard on gun.
4. Open bleed type master air valve (B).
5. Turn regulator adjustment knob (G) until gauge (E)
reads desired pressure. Turn clockwise to increase
pressure, counterclockwise to decrease pressure.
G
-
+
6. Disengage gun trigger lock.
16
B
E
TI5048a
7. Spray a test pattern. Read fluid manufacturer's rec-
ommendations. Adjust as necessary. If using an AA
gun, increase gun air pressure while testing spray
pattern.
8. Zinc sprayers only: When not spraying, reduce air
pressure to 30 psi (2.1 MPa, 21 bar). Open return
line and close gun valve.
9. Flush when done spraying. See Prime/Flush, page
14.
10. Follow Pressure Relief Procedure, page 13.

Circulating Zinc Fluids

1. When spraying zinc fluids, close return line valve.
Circulation is not required when spraying.
2. To circulate fluid back to supply container while you
are not spraying, open return line valve and lock gun
trigger safety. Pump will continue to run.
3. Always relieve pressure before overnight shut-
down, when changing spray tips, or when checking
or servicing any part of system. During circulation,
some fluid will be present in gun line and must be
relieved.
311164M