Agromatic ESR-NK Series, Installation And Operating Manual, Page: 76 / 98

7.1 Auxiliary functions (optional) 7 Operation
70 Actuators NK and VK, Position Controller ESR-NK
Important information!
–
Make manual settings on the actuator only at the output shaft end
where required.
–
Do not rotate the control shaft!
–
As an alternative, you can also install auxiliary functions to the actuator
to allow manual settings (see the section below).
7.1 Auxiliary functions (optional)
7.1.1 Handwheel
In case of a power failure the actuator can be adjusted using a handwheel.
WARNING
Danger of injury from the handwheel rotating with the actuator!
If the handwheel is moved while the actuator motor is running, there is a
risk of injury such as the upper limbs being drawn in or caught by the rotat-
ing handwheel.
–
Do not operate the handwheel unless the voltage supply has been
switched off.
NOTE
Risk of property damage caused by overrunning the limit switches or
cancelling the adjustment of the potentiometer!
–
In manual operation, take care not to move the valve beyond the end
positions set by the limit switches within the actuator.
–
Mechanically limit the valve end position before moving the actuator in
manual operation.
1. Switch off the operating voltage of the actuator.
2. Push handwheel H onto the stop in position M and rotate it in the desired
direction. Hold the handwheel in position M while rotating it. The control
cams and the potentiometer shaft also rotate in manual operation. The
adjusted positions of the control cams are maintained.
3. Release handwheel H as soon as the desired position is attained. The
handwheel automatically returns to home position A.