User's Manual

Installation
Install the Back Pressure Regulator
(High Pressure Systems Only)
NOTE: The back pressure regulator is required on
high pressure systems to prevent the system’s feed
pumps from overdriving the dosing pumps during
color change pump flush and color fill operations.
Adjust the back pressure during the dump process to
be approximately 75% of the supply pressure from
the feed pumps, but never more than 300 psi (2.1
MPa, 21 bar) less than the supply pressure.
Install the back pressure regulator (120) and
attaching hardware at the dump valve of the outlet
manifold stack.
1. Screw the t
ee (122) onto the dump valve fitting of
the outlet
manifold stack.
2. Assemble t
he two nipples (121) to the back
pressure
regulator (120). Screw the regulator
assembly
into the tee (122) as shown.
3. Install t
he gauge (123) in the open port of the
tee (122)
.
4. Connect
a 1/4 npt(f) dump line to the downward
facing n
ipple (121).
5. Connect
the fluid supply lines to the valves. See
Connect
the Fluid Lines, page 24.
Figure 12 Install Back Pressure Regulator at Dump
Valve of Outlet Stack
Connect the Valve Air Lines
1. Connect 5/32 in. (4 mm) OD air tubes from the
inlet solenoids to the air inlets of each inlet valve,
using the label inside the color control module as
a guide. See Setup the Modules, page 12.
2. Repeat for the outlet valves.
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