Setting Of The Angular Stroke: Mechanical Stops - Emerson Keystone EPI2 63 Installation, Operation And Maintenance Manual

Section 4: Installation
October 2020
4.6

Setting of the Angular Stroke: Mechanical Stops

It is important for the mechanical stops to end the angular stroke at both extreme
valve positions (fully open and fully closed). The setting of the angular stroke is
performed by adjusting the travel stop screw mounted on the actuator housing.
For the adjustment of the stop screw proceed as follows:
•
•
•
If the actuator angular stroke is stopped before reaching the end position
(fully open or closed), proceed as follows:
•
•
•
If the actuator angular stroke is stopped beyond the end position (fully open or closed),
proceed as follows:
•
•
Figure 8
16
Loosen the lock nut
Screw 1: open
To set the mechanical stop in opening, manually bring the actuator to the
completely open position, then turn screw 1 clockwise to find the correct
position, then block it by means of the nut
Screw 2: close
To set the mechanical stop in closing, manually bring the actuator to the
completely close position, then tighten screw 2
Unscrew the stop screw by turning it anticlockwise until the valve reaches
the correct position
When unscrewing the stop screw, keep the lock nut still with a wrench so that
the sealing washer does not withdraw together with the screw
Tighten the lock nut
Screw the stop screw by turning it clockwise until the valve reaches the correct position
Tighten the lock nut
Setting of the Mechanical Stop
Installation, Operation and Maintenance Manual
MAN-10-04-100-0711-EN Rev. 0
Installation