VICI Selectors (multiposition) Standard electric - Manual (Page 9)


Actuator Modifications
Situations occasionally arise when it is desirable to alter an actuator so that
the indexing angle is changed, such as when changing from a 6 position to
an 8 position valve. Or it may be helpful when changing from air to electric
actuation to reverse the rotation so that it will go the same direction as the
air actuator. These modifications can be accomplished by following the
procedures below.
CAUTION: Before performing any operations on the
actuator, make sure the actuator power cord is
unplugged.
Changing the Number of Positions (Indexing Angle)
Tools you will need:
1. 9/64 hex driver
2. 7/64 hex driver
3. #1 or #0 phillips screwdriver
You will also need one of the following, depending on the new valve type:
Product No. Description
I-21536 4 position encoder disc
I-21537 6 position encoder disc
I-21538 8 position encoder disc
I-21539 10 position encoder disc
I-21540 12 position encoder disc
I-21541 16 position encoder disc
I-21543 4 x 2 encoder disc (4 column selection)
I-21542 6 x 2 encoder disc (6 column selection)
I-21978 10 x 2 encoder disc (10 column selection)
Disassembly
1. Switch the actuator to its HOME position and then unplug the power
cord.
2. Remove the valve and its mounting hardware from the actuator.
For a closemount valve: (Figure 5) Use the 7/64 hex driver to loosen
the socket head screw (6-32 x 5/8") in the CR11 clamp ring between the
valve and the actuator. This allows the valve to be taken off the actuator.
For a valve on a standoff: (Figure 6) Use the 9/64 hex driver to loosen
the socket head screw (8-32 x 5/8" ) in the black-anodized CR3 clamp
ring on the actuator. Pull off the standoff with the valve attached.
3. Remove the four 4-40 x 1/4" phillips head screws which secure the
actuator cover. (One is accessed through the hole in the black right-
angle mounting bracket.) Slide the cover back far enough to allow the
power cord and the ribbon cable to be disconnected from the circuit
board. Carefully note how they are attached so that they can be
reconnected later. Now remove the cover completely.