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2019-05-24 / V1.0
Dangers and security measures
Contactors C137/C163/C164/C165 – Installation and Maintenance Instructions
3. Dangers and security measures
3.1 Electrical dangers
DANGER
The contactors are used to switch voltage. The touching of electrically conducting parts may result
in serious injuries or even death!
Energized parts are all metal parts belonging directly to one of the circuits or wires leading there. All
other visible metal parts and wires may also be energized in the case of a failure.
Before beginning any work on the contactors, always observe the following safety regulations:
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Disconnect on all sides
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Ensure that it is not possible to reconnect unintentionally
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Clearly mark your work area
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Make sure that there is no voltage present
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Earth and short circuit the installation; this also includes the discharging of any capacitors in
the main circuit
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Besides the main electric circuit, also disconnect additional and auxiliary circuits
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Cover or insulate adjacent energized parts
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Only an electrically skilled person may determine if there is no voltage present
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When the work has been concluded, proceed the other way round.
3.2 Other dangers
WARNING
Exclusively use the contactors for purposes as indicated in the specications and data sheets.
A wrong application can cause accidents and severe damages to persons!
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The manufacturer doesn‘t take the responsibility for accidents which were caused by improper
use of the product.
CAUTION
During continuous operation the contactors may become hot. Risk of burns!
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Before beginning any checks or maintenance work on the contactors make sure that the heat-
ed components have cooled down.
CAUTION
The contactors contain sharp-edged parts. Risk of injury!
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Use appropriate tools for installation and maintenance works on the contactors.
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Wear protective gloves when working with sharp-edged components.