4
Rotary:
The CVS 1200 Positioner comes with
standard NAMUR bracket, optional
brackets available. The bracket may
be used for Fork Lever, or NAMUR
bracket.
Standard actuator stem height is 20,
30, or 50mm. After checking stem
height assemble with bracket as
required.
Attach bracketed CVS1200R to the
actuator using hex-head bolts.
Bracket mounting hole is 6mm. Use
lock washer on fasteners for firm
attachment to the actuator, so the
CVS 1200 positioner will not shake
from vibration or any other impact.
The direction of the bracket is
determined by the operating
condition.
Set rotation position of the actuator
stem at zero point, “0%”. Single
acting actuator stem will be at zero
point when there is no supply
pressure. If a double acting actuator
is being used, check the actuator
stem rotation (clockwise, or counter
clockwise) by supplying pressure.
Install the fork lever after setting the
actuator stem at zero point. Check
the direction of the actuator stem –
clockwise or counterclockwise.
Installation angle of the fork lever
should be 45 degrees based on the
linear shaft. For NAMUR shaft the
angle does not matter.
Upon setting fork lever position,
tighten lock nuts which are
assembled on bottom of fork lever.
Attach CVS 1200R to the bracket. Fix
the clamping pin on the main shaft of
the positioner and insert connection
bar onto the fork lever slot so that it
may be locked to the fork lever
spring. This sets the alignment of the
main shaft of the positioner and the
center of the actuator stem. Poor
alignment of the actuator stem may
lower durability of the CVS 1200 due
to excessive force on the main shaft
of the positioner.
Tighten positioner base and bracket
with hex head bolts and lock washer.
It is recommended to tighten four
bolts after verifying the CVS 1200’s
position.
