User's Manual

Installation
Connect Circulating Fluid Lines
Circulation valves enable constant circulation of a
color when that color is not being sprayed:
•Whenacolorva
lve is closed, the system bypasses
the dosing pum
p by directing that color from the
inlet color v
alve to the outlet color valve through
a circulatio
n line, then to a Y fitting at the mix
manifold, th
en back to the color supply.
• When a color v
alve is open, the circulation line is
shut off. Th
e color is directed through the material
A dosing pum
p and out to the gun to be mixed and
sprayed, as
in normal operation.
NOTE: There can be only one solvent valve (S) and
one dump valve (D) per pump.
NOTE: On high pressure systems, see
Install the Back Pressure Regulator (High Pressure
Systems Only), page 23.
1. Connect a
ll fluid lines as described in
Connect N
on-Circulating Fluid Lines, page 24.
These lin
es are used during normal mixing and
spraying
.
2. Connect
the circulation lines as follows:
a. Connect a 1/4 npt(f) circulation line for each
color from the color valve’s circulation fitting
(R1, R2, etc.) on the inlet color valve stack
(B) to the corresponding circulation fitting
(R1, R2, etc.) on the outlet color valve
stack (C). This circulation line bypasses the
material A dosing pump when the color valve
is closed, allowing continuous circulation of
that color.
b. Install a Y fitting (D) in the A side of the mix
manifold (F). Install a fluid shutoff valve (E)
in one branch of the Y fitting. Connect a fluid
return line (H) to the shutoff valve, to circulate
the color back to the color supply (A).
NOTE: The fluid shutoff valve (E) must be
closed when spraying, to allow proper ratio
mixing and flow from the gun (G).
c. Connect a dedicated gun supply line for
each color to the corresponding color valve
(C1, C2, etc.) on the outlet color valve stack.
Connect the other end of this line to the open
branch of the Y fitting (D).
Figure 14 Valve Manifold Connections (Circulating
System)
KEY
SSolven
tfitting
C1 Color 1 fitting
C2 Color 2 fitting
R1
Colo
r 1 circulation fitting
R2
Color 2 circulation fitting
26 332455F