23 - SPECIAL INFORMATION FOR ATEX AREAS
in accordance with directive 2014/34/EU (explosive atmospheres)
23.1 - General information
Evaluation of the level of danger of explosion established in accordance with standards EN 13463-1 and EN 1127-1.
The units are certified as complying with the recommendations in standard EN 13463-5 "Protection by constructional safety ''
c
''.
The user must classify the various potentially explosive areas in accordance with directive 1999/92/EC.
The units are selected and manufactured according to the type of area defined by the user.
A unit must never be operated under conditions other than those for which it was designed.
Labelling
Each unit is supplied with an ATEX certificate of conformity. The ATEX labelling is affixed to the data plate as shown below:
E.g.:
II 2G IIB/IIB + H
2
or IIC TX
(*)
Explanation of the labelling:
-
:
Standardised ATEX logo
-
II:
: Group II = surface industries
-
2:
Category of equipment = installation area 1 or 2
-
G:
Equipment which can be installed in a gas zone
*: The labelling and the equipment integrated into the unit are adapted according to the conditions defined by the customer in the sheet completed prior to ordering:
-
IIB/IIB + H
2
or IIC:
Gas explosion set (IIA, IIB or IIC)
-
IIB
suitable for gas sets IIA and IIB
-
IIC
(or IIB + H
2
[depending on the labelling on the integrated equipment] if hydrogen present)
-
TX
replaced in the labelling by the temperature class given in the operating conditions defined by the customer, T2 (300°C) to
T6 (85°C), indicates the maximum permitted surface temperature.
System start-up, maintenance
The units must be installed and commissioned by a qualified professional.
All the provisions set out by the current directives and standards must be respected during installation, for example, automatically
linking the unit's supply to the presence of a flow rate detected by a sensor.
In all cases, refer to the general information section of this manual, to the specific manuals for the ATEX components built into the unit
and listed in the ATEX dossier, and to the specific precautions below:
■
Install the units so that the temperatures at and around the intake are between -40 and +60°C.
■
The units and the additional metal elements must be connected electrically by a grounding cable linked to the frame.
■
Select and install all the electrical connection and control components according to the risk zone in which they will be installed.
■
All remote metal components (screens, pipes, etc.) must be grounded, if necessary by grounding cables.
■
Heat protection is compulsory for the motor (not supplied as standard, contact us). This must be connected by the installer (away
from the ATEX area).
■
The installer must use all available devices to ensure that the temperature of the various elements of the installation remains below
the autoignition temperature of the gas in question.
Any modification to the unit without our prior approval is prohibited.
Ensure that, during assembly or maintenance operations, no element (tools, screws, components, etc.) are left in the unit, as this could
cause a dangerous situation to arise (see section 22.3).
Prior to any maintenance operation, ensure that the unit is powered off.
After each maintenance operation, check that all the removed components have been refitted and secured in their original position.
Ensure that the ground straps are in good condition and reconnected.
Regularly check the mounting of removable parts such as fan motor assemblies, enclosures, feet, or the expansion vessel.
Exchanger coils:
The temperature of the fluids circulating in the coils must not exceed the value given on the unit's name plate.
It must be below the surface temperature limit (or temperature class) corresponding to the ATEX atmosphere for which the unit is
certified (see labelling)
23
Summary of Contents for 09PE
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