Graco PrecisionMix ii, Instructions And Parts List

Page: 46 / 260

Installation 3–16
System Installation
Install the Gun Flush Box and Solenoid Box (Code M, N and P)
NOTE:
See Gun Flush Box Manual 309277 for gun flush
box adjustment and parts information.
See page 10–16 for a pneumatic schematic of the
gun flush box.
1. See Fig. 3.17. Install the gun flush box (H) in the
spray booth. Locate the Gun Flush Box as far
away from the spray or application point as pos-
sible to help avoid getting over-spray on it.
2. Install the gun flush solenoid box (G) in the non-
hazardous area, within 25 ft. (7.6 m) of the gun
flush box. 100 ft. (30.5 m) of cable (C9) is pro-
vided, connecting the solenoid box with the con-
troller (B).
3. Connect two feet (0.6 m) of straight pipe or tubing
(T) between the Gun Flush Box fluid outlet (O) and
an enclosed waste container (W). See Fig. 3.14.
WARNING
TOXIC FLUID HAZARD
To reduce the risk of splashing, a minimum of two
feet (0.6 m) of straight pipe or tubing must be
connected between the Gun Flush Box and an
enclosed waste container for the solvent.
Fig. 3.14
O
T
W
4. Electrically interlock the Gun Flush Box air supply
with the ventilators to prevent the box from operat-
ing when ventilating fans are not operating. Check
and follow all National, State, and Local codes
regarding air exhaust velocity requirements.
WARNING
TOXIC OR FLAMMABLE FUMES
HAZARD
To avoid hazardous concentrations of
flammable or toxic fumes, install the Gun
Flush Box in a properly ventilated spray
booth. Never operate the Gun Flush Box
unless ventilation fans are operating.
5. Use a clean, dry air supply; filtered to 10 microns.
Connect a minimum 3/8 in. (10 mm) air supply line
to the gun flush box solenoid box (G).
6. Install an atomizing air shutoff valve (L) in the
spray gun air supply line. See Fig. 3.17 or 3.18.
7. Connect an air line (A3) between the valve (L) and
the air flow switch (D).
Continued on the next page.