Setting Of The Angular Stroke: Mechanical Stops - Emerson Bettis SCE300 Installation, Operation And Maintenance Manual

Installation and Maintenance Instructions
MAN-02-04-99-0712-EN Rev. 1
4.6 Setting of the Angular Stroke:
Mechanical Stops
It is important for the mechanical stops to end the angular stroke at both valve position
extremes (i.e. fully open and fully closed). 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
Installation
Loosen the lock nut
Screw 1: open
To set the mechanical stop for opening, manually bring the actuator to the
completely open position, and then turn screw 1 clockwise to find the correct
position, and then lock screw 1 down using the nut
Screw 2: close
To set the mechanical stop for closing, manually bring the actuator to the
completely closed position, and then tighten screw 2
Unscrew the stop screw by turning it counter-clockwise until the valve reaches the
correct position
When unscrewing the stop screw, keep the lock nut still with a wrench such 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
SCREW 1
CCW/OPEN/STOP
Section 4: Installation
SCREW 2
CCW/CLOSED/STOP
February 2020
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