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Instruction manual
Electric Actuators Type EA15-250
6 Operation
WARNING!
Working with removed cover on the actuator!
Danger of injury and/or damage to property.
► Disconnect connections of the feed and control voltage.
► Only carry out adjustments on live parts with specially insulated tools.
6.1 Insert the emergency manual override hand crank
The emergency manual override can be used for either opening or closing the valve manually in case of emergency. This will overri-
de the control signal. It may also be used for operation during commissioning while not power is yet available.
The emergency manual override hand crank can be turned clockwise or counterclockwise. The direction depends on whether the
valve is to be opened or closed.
Direction of rotation Function
Clockwise (CW) close
Counter clockwise (CCW) open
Depending on the type of actuator a dierent number of rotations at the crank handle is necessary, in order to open or close the
valve. The following table shows how many rotations are necessary for the respective type:
Type Number of rotations Angle
EA15 9 90°
EA25 9 90°
EA45 9 90°
EA120 27 90°
EA250 41 90°
WARNING!
Unintentional restarting of the actuator!
Danger of injury due to rotation of the actuator if powered while emergency manual override hand crank is installed.
► If possible, disconnect the unit plug during manual operation or disconnect the actuator in another way.
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