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Instruction and Safety Manual - SMART S
ENGLISH
35
5
INSTALLATION
Only qualified personnel can install gas detectors, as described in Annex A of IEC 60079-
14 standard.
ATTENTION!
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 source. After 10 minutes from power source
interruption, the equipment can be opened.
It’s strictly recommended t
he use of personal protective equipment
during operations inside 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.
Detectors with EPL Gb come complete with wall fixing brackets.
5.2
Earth ground connection
The enclosure can be connected to the earth ground through the external clamp with anti-
loosening locking washer and anti-rotation mechanical device.
To allow external earth ground connection, use a conductor with a minimum section of 4
mm
2
.
To allow internal earth ground connection, use a conductor with a minimum section of 1.5
mm
2
.
5.3
Cable entry
The cable entry accessories and holes
’ closure must have Ex d/Ex tb protection mode and
they must be certified following IECEx scheme.
Le condutture in tubo devono essere conformi alla norma IEC 60079-14.
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.
