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Pag. 26
5. Installation
Only qualied personnel can install gas detectors, as described in Annex A of EN 60079-14
standard.
It’s strictly forbidden open and close the equipment when it’s installed in hazardous area
and it’s powered-on. This operation can be conducted in safe zone and without power sour-
ce. After 10 minutes from power source interruption, the equipment can be opened.
It’s strictly recommended the use of personal protective equipment during operations insi-
de the enclosure
5.1 Correct mounting
The gas detector is always to be mounted with the sensing element placed downward.
For no reasons at all the enclosure can be drilled.
Wall mount the detectors by employing the existing holes.
5.2 Earth ground connection
The enclosure can be connected to the earth ground through the external clamp with an-
ti-loosening locking washer and anti-rotation mechanical device.
To allow external earth ground connection, use a conductor with a minimum section of 4
mm.
To allow internal earth ground connection, use a conductor with a minimum section of 1.5
mm.
5.3 Cable entry
The cable entry accessories and holes’ closure must have Ex d/Ex tc protection mode and
they must be certied following ATEX 2014/34/UE directive.
Pipe ducts must comply with EN 60079-14 standard.
WARNING!
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