Flowserve StarPac 3 - Manual (Page 15)

15
StarPac Intelligent Control System FCD VLENIM0066-05 04/14
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based on stroke length. The stroke lengths are stamped next to their corresponding holes in the follower
arms. Make sure the unthreaded end of the pin is on the stamped side of the arm. Re-install lock washer and
tighten nut to complete follower arm assembly.
2. Slide double-D slot in the follower arm assembly over the flats on the position feedback shaft in the back of
the positioner. Make sure the arm is pointing toward the customer interface side of the positioner. Slide lock
washer over the threads on the shaft and tighten down the nut.
3. Line up the mounting bracket with the mounting holes on the actuator yoke. Bolt the mounting bracket on to
actuator yoke.
4. Align the three outer mounting holes on the positioner with the three positioner mounting holes on the bra-
cket. Fasten with 1/4-20 x1/2” bolts.
5. Position the take-off arm mounting slot against the stem clamp mounting pad. Apply Loctite 222 to the take-
off arm bolting and in and insert through washers into the stem clamp. Leave bolts loose.
6. Slide the appropriate pin slot of the take-off arm, based on stroke length, over the follower arm pin. The
appropriate stroke lengths are stamped by each pin slot.
7. Center the take-off arm on the rolling sleeve of the follower pin.
8. Align the take-off arm with the top plane of the stem clamp and tighten bolting. Torque to 120 in-lb.
NOTE: If mounted properly, the follower arm should be horizontal when the valve is at 50% stroke and should
move approximately ±30° from horizontal over the full stroke of the valve. If mounted incorrectly, a stroke ca-
libration error will occur. Reposition the feedback linkage or rotate the position sensor to correct the error.
8.2 Mounting to Standard Flowserve Valtek Rotary Valves
The standard rotary mounting applies to Flowserve Valtek valve/actuator assemblies that do not have mounted volume
tanks or handwheels. The standard mounting uses a linkage directly coupled to the valve shaft. This linkage has been
designed to allow for minimal misalignment between the positioner and the actuator. The tools required for the following
procedure are:
• 5/32” Allen wrench
• 1/2” open-end wrench
• 3/8” socket with extension
• 3/16” nutdriver