Flowserve 3400MD Digital Positioner - Manual (Page 11)

11
Logix 3400MD Digital Positioner FCD LGENIM3404-08-AQ – 5/15
flowserve.com
5 Mounting and Installation
5.1 Mounting to Valtek Linear
Mark One Valves
To mount a Logix 3400MD 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 corresponding 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.
5.2 Mounting to Standard Valtek
Rotary Valves
(See Figure 4)
The standard rotary mounting applies to 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 misalign-
ment between the positioner and the actuator. The tools required for
the following procedure are:
• 5 ⁄
32
” Allen wrench
• 1/2” open-end wrench
•
7 ⁄
16
” open-end wrench
• 3 ⁄
8
” socket with extension
• 3 ⁄
16
” nut driver
1. Fasten the spline lever adapter to the splined lever using two 6 x
1/2” self-tapping screws.
2. Slide the take-off arm assembly onto the spline lever adapter
shaft.Insert the screw with star washer through the take-off arm
and add the second star washer and nut. Tighten nut with socket
so arm is lightly snug on the shaft but still able to rotate. This will
be tightened after linkage is correctly oriented.
3. Attach follower arm to positioner feedback shaft using the star
washer and 10-32 nut.
NOTE: The arm will point up when feedback shaft is in the free
position.
4. Using four 1/4-20 x 1/2” bolts, fasten positioner to universal bracket
using appropriate hole pattern (stamped on bracket).
5. Using a 1/2” end wrench and two 5 ⁄
16
-18 x 1/2” bolts, attach bracket
to actuator transfer case pad. Leave these bolts slightly loose
until final adjustments are made.
6. Rotate take-off arm so the follower pin will slide into the slot on
the take-off arm. Adjust the bracket position as needed noting
the engagement of the follower pin and the take-off arm slot. The
pin should extend approximately
1 ⁄
16
” past the take-off arm. When
properly adjusted, securely tighten the bracketing bolts.