User Manual

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Siemens Electromotoric actuators CB1N4520en
Smart Infrastructure 2019-10-16
The valve and actuator can be assembled on site. There is no need for special tools.
Commissioning notes
When commissioning the motorized butterfly valves, always check wiring and test the
functions. This also applies to any additional components fitted, e.g. auxiliary switch.
To avoid pressure shocks on the butterfly valve, the VKF42.. must be driven to
its fully open position either manually or via positioning signal prior to activat-
ing the pump(s).
The flow rate can be adjusted either by operating the electric actuators when
necessary, or by operating the handwheel.
Operating notes
SQL321B25…B50
SQL361B25…B50
SQL351B25…B50
Handwheel is engaged by pushing the handwheel in.
SQL321B150…B2650
SQL361B150…B2650
SQL351B150…B2650
The handwheel is always engaged.
If the direction of rotation needs to be reversed, simply exchange the connections Y12
and Y14.
The 0...90° angle of rotation for the mechanical limit switches is factory-set and cannot
be changed.
The potential-free auxiliary switches are equipped with adjustable switching points.
Maintenance notes
The actuators and butterfly valves require no maintenance.
Before performing any service work on the valve or actuator:
· Switch off the pump and power supply
· Close the main shut-off valves in the pipe work
· Release pressure in the pipes and allow them to cool down completely
If necessary, disconnect electrical connections from terminals.
The valve must be re-commissioned only with the handwheel or the actuator correctly
assembled.
Disposal
The device is considered electrical and electronic equipment for disposal in terms of
the applicable European Directive and may not be disposed of as domestic garbage.
· Dispose of the device through channels provided for this purpose.
· Comply with all local and currently applicable laws and regulations.
Orientation
Upright to horizontal
Warning
Manual operation
mode
Reversing the
direction of rotation
Setting the angle of
rotation
Warning