FSE Series Electric Actuator
Installation & Maintenance Manual
7
November 18, 2022
www.atcontrols.com
Engineering\documents\products\IOM\Iom08026.docx
INSTALLATION
Manual Handwheel
1. Insert screw through washers and handwheel before securing them to the override shaft as shown.
Turn off power to actuator when installing handwheel.
Mounting
The actuator is shipped in the designated fail position from the factory. Make sure the valve and actuator are in the
same position before mounting.
1. If the actuator is to fail close on loss of power, the valve must be in the closed position when mounting the
actuator. On the other hand, if the actuator is to fail open on loss of power, the valve must be in the open position
when mounting the actuator.
Valve open
for fail-open
actuation
Valve closed
for fail-close
actuation
Actuators are intended to be used
between a horizontal and upright
position. DO NOT mount with
actuator top below horizontal!