Repair; Dose Valve Tubing Connections - Graco 24R968 Installation-Parts

Repair

Repair Repair
Dose Valve Valve Tubing Tubing Connections
Dose Dose Valve Tubing
NOTE: 5/32 in. (4 mm) tubing connects the solenoid
NOTE: NOTE:
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 19 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 black tubing (K) 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 20 Inlet Manifold Tubing Connections
332456D
Connections
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 21 Tubing Connections at Solenoid
Manifold, to Pump Outlet Manifold
a. Connect blue tubing (B) 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 22 Outlet Manifold Tubing
Connections
Repair
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