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Valve Actuator Alignment
1. Remove the valve box top assembly. See steps 1 through 3 " Valve Box Top Assembly Remov-
al."
2. Loosen the actuator link arm lock screw at each actuator (Figure 2- 29) with a 3mm hex key
wrench so that the coupling/shaft assembly is free to rotate. Push the coupling shaft fully into
the actuator.
3. Turn the valve rotor index pin of each valve counterclockwise (CCW) until it is 0.010 inch (0.25
mm) from the counterclockwise (left- hand) valve stop (Figure 2- 31).
4. Set the valve box top assembly on the lower assembly and secure it with the two screws re-
moved in step 1 above. To do this, simply place the valve box top assembly on the two diago-
nally opposite rectangular standoffs in the lower valve box assembly and install the screws.
(The quick release pin should be installed in the 90 degree position for the 6 port valves and in
the 60 degree position for the 10- port valves.)
5. Gently rotate and push the coupling/shaft assembly with a blade- type screwdriver until the slot
on the coupling fully engages the valve rotor index pin . Repeat this procedure for each valve
installed.
6. Make sure that all solenoid valves are turned " off"by the appropriate valve controller. Turn on
the air supply to the solenoid valve(s). The piston rod of each actuator will move all the way out
to the extended (OFF) position. Very firmly tighten the link arm lock screw for each actuator.
Use care in performing the above operation so as not to accidentally turn the valve
rotor away from its preset (step 2) position.
7. Install the hardware for any variable restrictors present.
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CAUTION
SVC 7- 16
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