PME120/RHD250 to 4000 (Contrac)
ELECTRICAL ROTARY ACTUATOR | OI/PME/RHD250/4000-EN REV. F
13
Force-dependent stop adjustment
1.
First make adjustment as described in
Travel-dependent
stop adjustment
(action steps 1 to 4).
2.
Prior to re-fastening the counter nut, turn the link rod with
the hand wheel locked in place to provide pretension in the
closed position of the valve.
3.
Lock the hand wheel.
4.
Turn the link rod or slightly shift the mechanical limit stop to
get a small gap between the lever and the limit stop. The
procedure depends on the stiffness of the linkage
arrangement.
5.
Tighten the counter-nuts and limit stop screws.
6.
Re-attach the lever cover. Observe the tightening torque!
Preparing for installation with direct adapter for PME120
1.
Make a hole in the direct adapter in accordance with the valve
shaft. For the layout, make sure that the resulting torques
can be transferred safely. Observe the position of keyed
connection elements in relation to the possible mounting
positions for the coupling.
2.
Make sure that the valve shaft and direct adapter hole are
clean and free of grease.
3.
The direct adapter for the actuator is designed with an F10
flange in accordance with ISO5211. A corresponding
centering ring is delivered loose with the actuator. Make sure
that the flange for the direct adapter fits the flange for the
valve.
4.
Mount the actuator on the valve flange with four screws.
Make sure the actuator is centered precisely. Tighten the
screws using a torque of 50 Nm (37 lbf-ft). The valve-side and
actuator-side section of the coupling must interlock.
Travel-dependent stop adjustment
1.
Remove the cover from the adjustment screws.
2.
Move the actuator coupling / final control element into the
proper end position.
3.
Release the lock nut of the adjustment screw for the limit
stop lever and turn the adjustment screw against the limit
stop. Tighten the lock nut with a torque of 70 Nm (52 lbf-ft).
4.
Re-attach the lever cover. Observe the tightening torque.
Force-dependent stop adjustment
1.
Remove the cover from the adjustment screws.
2.
Make sure that the valve can be subjected to the resulting
torques.
3.
Move the actuator coupling / final control element into the
proper end position.
4.
The adjustment screw for the limit stop may not touch the
limit stop lever. If the limit stop lever touches the set screw
before reaching the end position, release the counter-nut
and unscrew the set screw even more. Then tighten the
counter nut with a torque of 70 Nm (52 lbf-ft).
5.
Re-attach the lever cover. Observe the tightening torque.
