Warren Controls AmurAct Linkage LS Series, Инструкции по установке, эксплуатации и обслуживанию

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AmurAct AMURACT_IOM_RevK_0415
13
Version B: two-way AmurAct control valves having
1 1/8” stem travel. 4” Type 20 and 23.
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1
.
Beginning with a linkage properly oriented, securely fastened
to the valve bonnet and loosely assembled to the valve stem,
manually operate the linkage to raise the valve stem. Observe
that there are TWO benchmarks scribed into the front face of the
crank support column.
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2
.
Gently lower the valve stem and note the position of the crank
relative to benchmark #1 when the plug makes contact with the
valve seat. Exert just enough force on the crank to take up any
looseness in the linkage pivots.
3
.
Lower and tighten the two stem nuts together. This provides
a means to grip and rotate the valve stem after lifting the plug
from its seat, to thread the stem into or out of the stem connector.
Threading the stem into the connector shortens the assembly and
allows the crank to move further counterclockwise. Threading the
stem out of the connector lengthens the assembly, allowing less
counterclockwise rotation. Perform this sensitive into or out of
adjustment until the crank stops 2 to 3 degrees PAST benchmark
#1. REPEAT THE POSITION CHECK IN STEP 2 AFTER EACH
ADJUSTMENT.
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4.
Carefully loosen the stem nuts from each other and move the
upper nut upward into contact with the stem connector block.
Using a second wrench to keep the block from rotating, tighten
the nut securely against the block. This tightening will lengthen
the stem connection assembly and allow less crank rotation to the
plug/seat contact point.
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5.
Repeat step 2 (above). If the crank stops PRECISELY at
benchmark #1 (denoting proper calibration), tighten the second
stem nut against the first, THEN REPEAT STEP 2 ONCE MORE.
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6.
If the crank does not stop PRECISELY at the benchmark after
completing step 5, repeat this procedure from step 3, appropriately
lengthening or shortening the stem assembly in small increments.
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7.
After precise calibration is complete, push the crank firmly
against its support column to fully extend the linkage input shaft.
Install a clamp onto the lower end of the crank and the crank
support column. Draw the crank toward the column until it aligns
with the #2 benchmark. This is the end-of-travel position of the
calibrated linkage and full seating force is now present on the valve
plug. Leave the clamp in place until motor installation is complete.
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8.
Calibrate and install the motor as instructed on page 10 of
this manual. The proper motor calibration point for this version is
90 degrees as indicated on the motor shaft clamp position scale.
Remember to press the motor RESET pushbutton after installation
and calibration are complete and the motor is energized, but
before the system is placed into service.
Do not press the RESET pushbutton within 10 seconds of applying
power to the actuator (See page 8, INITIAL STARTUP AND OPERA-
TION). Pressing the RESET pushbutton within 10 seconds of apply-
ing power to the actuator may result in the actuator programming
being changed. If the actuator programming is changed, the actua-
tor may not respond correctly to the control signal.
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1
2
NOTE that the
valve stem and
plug have been
raised prior to
turning the stem.
into
out of
OVERVIEW: Calibration of the AmurAct linkage is accomplished by adjusting effec-
tive stem length so the linkage crank is precisely aligned with a benchmark when
the valve plug contacts the valve seat. Precision is necessary, because the remaining
crank travel determines how much force will be applied to the valve plug to achieve
tight shutoff. Minor maladjustment can result in major loss of shutoff capability or
overstressing of linkage and valve components. AmurAct performance is directly re-
lated to the accuracy of its’ calibration. Calibration of each version is different from
the others, read and understand the entire procedure before adjusting anything. Call
our factory with any questions.
BENCHMARKS CALIBRATED END-OF-TRAVEL
CALIBRATING THE AMURACT LINKAGE
!
WARNING
The valve stem must be raised when making stem connector
adjustments. Do not turn or rotate the valve stem while the valve
plug is in contact with the valve seat. “Grinding” contact will
damage the mating surfaces, adversely affect shut-off capability.