ENGLISH
Pag. 25
4. Special conditions for safe use
³
The installation, use, maintenance and restoration must be done following these Safe-
ty Instructions supplied by Sensitron.
³
The gas detector installation must guarantee the equipotential connection of the en-
closure.
³
Only the models equipped with dust filter can be installed in zone 21 and 22.
³
The dust filter has a membrane, this must not be damaged or removed. Moreover, the
membrane cannot be touched with bare hands to avoid filter damage.
³
For models with varnished aluminium enclosures, there’s the risk of electrostatic
charges accumulation. The equipment must be cleaned with a damp cloth or antistat-
ic products.
³
The operating temperature conditions are described in the label, they are compatible
with sensing elements’ operating temperatures.
5. Installation
Only qualified personnel can install gas detectors, as described in Annex A of EN /IEC 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 source.
After 10 minutes from power source interruption, the equipment can be opened.
It’s strictly recommended the use of personal protective equipment during operations in-
side 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.
WARNING!
Summary of Contents for SMART S-IS
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