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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 h
ardware at the dump valve of the outlet
manifold st
ack.
1. Install the gauge (123) in the open port of the
tee (122).
2. Screw the tee (122) onto the dump valve fitting of
the outlet manifold stack.
3. Assemble the two nipples (121) to the back
pressure regulator (120). Screw the regulator
assembly into the tee (122) as shown.
4. Connect a 1/4 npt(f) dump line to the downward
facing nipple (121).
5. Connect the fluid supply lines to the valves. See
Connect the Fluid Lines, page 26.
Figure 7 I
nstall Back Pressure Regulator at Dump
Valve of O
utlet Stack
333282B
21