User's Manual

Repair
Repair
Dose Valve Tubing Connections
NOTE: Red and green 5/32 in. (4 mm) tubing
connects the solenoid manifold to the pump’s dosing
valves. See the Pump Tubing Schematic on the next
page. Tubing lengths must be 18 in. ± 1/2 in. (457
mm ± 13 mm) for all connections. Always use equal
lengths of tubing, to balance the timing of the valves.
Lengths longer than 18 in. (457 mm) will increase
valve response time.
1. On the bottom of the solenoid manifold are four
ports with tube fittings: UP OPEN, UP CLOSED,
DOWN OPEN, and DOWN CLOSED. These
ports provide air to open and close the pump’s
inlet dosing valves.
Figure 15 Tubing Connections at Solenoid
Manifold, to Pump Inlet Manifold
a. Connect green tubing (G) from the UP OPEN
fitting to the 90° tube fitting on the side of the
INLET UP dosing valve.
b. Connect red tubing (R) from the UP CLOSED
fitting to the 90° tube fitting on the end of the
INLET UP dosing valve.
c. Connect green tubing (G) from the DOWN
OPEN fitting to the 90° tube fitting on the side
of the INLET DOWN dosing valve.
d. Connect red tubing (R) from the DOWN
CLOSED fitting to the 90° tube fitting on the
end of the INLET DOWN dosing valve.
Figure 16 Inlet Manifold Tubing Connections
2. On the side of the solenoid manifold are four
ports with 90° tube fittings (not shown): UP
OPEN, UP CLOSED, DOWN OPEN, and DOWN
CLOSED. These ports provide air to open and
close the pump’s outlet dosing valves.
Figure 17 Tubing Connections at Solenoid
Manifold, to Pump Outlet Manifold
a. Connect green tubing (G) from the UP OPEN
fitting to the 90° tube fitting on the side of the
OUTLET UP dosing valve.
b. Connect red tubing (R) from the UP CLOSED
fitting to the 90° tube fitting on the end of the
OUTLET UP dosing valve.
Figure 18 Outlet Manifold Tubing
Connections
18 332456B