Warren Controls AmurAct Actuator Linkage and Motor - Manual (Page 12)

12 2600 Emrick Blvd • Bethlehem, PA 18020 • USA • 800-922-0085 • www.warrencontrols.com IOM_AA_RevH_0413
REMOVING/INSTALLING/CALIBRATING AN AMURACT LINkAGE
REMOVING AN AmurAct LINKAGE (all versions)
1.
After the motor has been removed according to in-
structions on page 10, and with the line isolation
valves securely shut, remove the c-clamp from the
crank and base. Manually rotate the crank clockwise
to release stem force.
2.
Remove the lower shoulder screw, nut and washer
from the stem connector. Remember to retain all re-
moved parts for reassembly.
3.
Using a drift pin or blunt chisel and striking hammer,
loosen and remove the large nut that secures the link-
age base to the threaded valve bonnet. Lift the entire
AmurAct linkage assembly from the bonnet. Store it
safely for re-use.
NOTE
Care must be taken to avoid rotating the valve
plug while it is in contact with the valve seat to
avoid damaging the valve’s seating surfaces.
4.
If the valve is to be re-packed, hold the jam nuts and
remove the stem connector. Measure and record the
distance from the top of the jam nuts to the end of
the valve stem. This will facilitate re-assembly. Loosen
and remove the jam nuts.
INSTALLING AN AmurAct LINKAGE (all versions)
1.
Loosely install the valve stem jam nuts to the dimen-
sion recorded earlier, or ½” from the end of the valve
stem.
2.
Thread the stem connector onto the stem into loose
contact with the top jam nut.
3.
Lower the linkage assembly over the valve stem and
bonnet then slide the bonnet nut over the connector
and loosely thread the nut onto the threaded bonnet
until it contacts the linkage base.
4.
Rotate the linkage base to the desired orientation and
tighten the bonnet nut using a drift pin or blunt chis-
el and striking hammer to ensure that it is securely
fastened.
5.
Rotate the stem connector so the stem connector
links can straddle it. Rotate the crank until the link
bearings align with the stem connector opening and
install the shoulder screw and washers. Tighten the
nut securely.
6.
The linkage is ready to be calibrated in accordance
with instructions specific to the linkage version (see
definitions above).
There are currently three ways in which AmurAct linkages are employed.
It is necessary to identify which version is applicable before proceeding.
VERSION A: Two-way valves with ¾” stem travel. This applies to all two-
way AmurAct control valves, with the exception of:
VERSION B: Two-way valves with 1 1/8” stem travel, currently limited to
the 4” Type 20 and 23.
VERSION C: Three-way valves with ¾” stem travel. This applies to all three-
way valves currently listed in the AmurAct product line.
While the difference between ¾” (A) and 1 1/8” (B) stem travels is account-
ed for by linkage calibration, the three-way linkage (C) is mechanically dis-
tinct as well as being calibrated differently.