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7.3 Expert knowledge required by the installer
The electrical connection, installation and commissioning of the
DuoFern Universal Actuator 9470-1 must only be carried out by
a qualified electrician in accordance with the instructions in this
manual.
8. Connecting the DuoFern Universal Actuator 9470-1
8.1 Safety instructions for the electrical connection
DANGER!
There is a risk of fatal electric shock when touching electri-
cal components.
◆
All connection and installation work must only be carried
out in a de-energised state.
◆
Disconnect all phases of the mains power lead and secure it
to prevent any reconnection.
◆
Check that the system is de-energised.
Prior to the electrical connection, check that the voltage / frequen-
cy on the type plate corresponds to that of the local mains supply.
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