Graco 3A0869H Set Up the Fluid Manifold for Dynamic Dosing

Installation
16 3A0869H
Set Up the Fluid Manifold for Dynamic
Dosing
NOTE: For more information about Dynamic Dosing,
see page 53.
NOTE: When using dynamic dosing it is very important
to maintain a constant, well-regulated fluid supply. To
obtain proper pressure control and minimize pump pul-
sation, install a fluid regulator on the A and B supply
lines upstream of the meters.
If you will be operating using dynamic dosing, the fluid
manifold must be set up properly for your application.
Order the 15U955 Injection Kit (accessory).
1. See F
IG . 7. Remove the screws (A) and static mixer
bracket assembly (B).
2. Loosen the static mixer nut (N1). Remove and retain
the static mixer (SM).
3. Loosen the u-tube nuts (N2 and N3). Discard the
u-tube (C) and the static mixer fitting (D).
4. Remove and retain the 1/4 npt(m) fitting (F).
Remove the integrator (G) and discard
5. See F
IG . 8. Remove the remaining parts from the
restrictor housing (H). Retain the plug (J) and base
(K). Discard all the used o-rings.
6. Rotate the restrictor housing (H) 180° so the set-
screw (S) is at top left, as shown in F
IG . 8. Remove
and retain the two setscrews (S). The position of
these screws will be reversed when reassembled.
7. Install one larger o-ring (L1*) in the housing (H).
Screw the injection cap (M*) into the housing.
8. Determine the desired flow range for your applica-
tion. Select the appropriate size restrictor for your
selected flow and ratio, using the Dynamic Dosing
Restrictor Selection Graphs on pages 66-70, as a
guide. Install the restrictor (R*) in the base (K).
9. Assemble the smaller o-ring (L2*), restrictor (R*)
and base (K), one larger o-ring (L1*), and plug (J) as
shown.
10. Install the two setscrews. Install the long setscrew
(S) at the front of the housing, for ease of access.
.
F IG . 7. Disassemble Integrator and Static Mixer
N1
A
B
SM
C
D
ti16334a
F
G
N2 N3