Flowserve 3400IQ Digital Positioner - Manual (Page 14)

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06
14
5 Mounting and Installation
5.1 Mounting to Valtek Linear Mark One Valves
To mount a Logix 3400IQ positioner to a Valtek linear Mark One valve, refer to Figure 3 and proceed
as outlined below. The following tools are required:
• 9 ⁄
16
" open-end wrench (or 1/2" for spud sizes 2.88 and smaller)
• 7 ⁄
16
" box wrench
• 3 ⁄
8
" open-end wrench
1. Remove washer and nut from follower pin assembly. Insert pin into the appropriate hole in
follower arm, based on stroke length. The stroke lengths are stamped next to their corre-
sponding holes in the follower arms. Make sure the unthreaded end of the pin is on the stamped
side of the arm. Reinstall lock washer and tighten nut to complete follower arm assembly.
2. Slide the 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. Align the bracket with the three outer mounting holes on the positioner. Fasten with 1/4" bolts.
4. Screw one mounting bolt into the hole on the yoke mounting pad nearest the cylinder. Stop
when the bolt is approximately 3 ⁄
16
" from being flush with mounting pad.
5. Slip the large end of the teardrop shaped mounting hole in the back of the positioner/bracket
assembly over the mounting bolt. Slide the small end of the teardrop under the mounting bolt
and align the lower mounting hole.
6. Insert the lower mounting bolt and tighten the bolting.
7. Position the take-off arm mounting slot against the stem clamp mounting pad. Apply Loctite 222
to the take-off arm bolting and insert through washers into stem clamp. Leave bolts loose.
8. 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.
9. Center the take-off arm on the rolling sleeve of the follower pin.
10. 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 calibration error will occur and the indicator lights will blink a
YRYR or YRRY code indicating the position sensor has gone out of range on one end of travel.
Reposition the feedback linkage or rotate the position sensor to correct the error.