Nice WA20/A - Installation; Preliminary Checks; Diagram of the Connections

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and the directions provided in this manual.
3) Installation
3.1) Preliminary checks
Before proceeding with the installation:
• Check that all the materials are in excellent condition, suitable for
use and compliant with current standards.
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protected from impact and that the mounting surfaces are suf-
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reason whatsoever must the side and top walls be perforated. The
cables must only enter the unit from the bottom!
• Components must never be immersed in water or other liquids.
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malfunctions or hazardous situations.
• Only connect the control unit to a power supply line equipped with
a safety grounding system.
• The power supply line must be protected by suitable magnetother-
mal and differential switches.
• A disconnection device must be inserted in the power supply
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equivalent system, for example an outlet and relative plug. If the
disconnection device for the power supply is not mounted near the
automation, it must have a locking system to prevent unintentional,
unauthorised connection.
3.2) Diagram of the connections
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The unit must, under no circumstances, be electrically powered.
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Carry out the necessary connections, following the diagram in Fig. 4 and the following description of the connections.
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regards automatic gates.
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