ENGLISH
Pag. 26
5. Installation
The installation of the detectors must be carried out by expert personnel according to the
criteria of Annex A of the 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 (PPE) during operations
inside the enclosure, in order to avoid injuries.
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 or suitable wall fixing brackets.
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
mm2.
To allow internal earth ground connection, use a conductor with a minimum section of 1.5
mm2.
5.3 Cable entry
The accessories used for cable entry and closing unused holes must have Ex d protection
mode, certified according to the ATEX 2014/34/EU directive.
Pipe ducts must comply with EN 60079-14 standard.
Thread type is described in the label (standard NPT ¾”).
In case of tapered thread, use a thread-lock glue (Loctite 243 for example) on 2-3 threads.
5.4 Cables
For the electrical connection of the detector, use cables compliant with EN 50266 standards.
WARNING!
Summary of Contents for SMART3G-GrI
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