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2 - RECEIPT OF GOODS
2.7 - Positionning of potentially flammable zone
around the unit
The full unit, including all options & accessories that are delivered
by the manufacturer, has been qualified for the use with A2L
refrigerant.
For that purpose, the manufacturer complies with EN 378-2 §6.2.14
and defined a potentially flammable zone using EN 60079-10-1
in order to identify where ignition sources must not be present.
Then the manufacturer designed the machine in order that, if the
unit is used the way it was designed for, there is no internal ignition
source in the internal potentially flammable zone.
Thus, the only residual risk is to have an ignition source introduced
in the potentially flammable zone by the user. For that purpose,
the manufacturer decided to represent the external potentially
flammable zone (see below schemes in section 3) where the user
must not introduce ignition source.
This indication is only here to help our customer to identify the
limits of the flammability risk.
But there is no risk of explosion linked to the used of A2L refrigerant
due to the machine itself.
Note (the following information is provided by the manufacturer
exclusively for informational purposes. The application of the
following directives relies exclusively upon the user):
According to directives 2009/104/EC and 1999/92/EC, these zones
might be qualified by the user as ATEX Zone based on the user's
own risk analysis for which the user remains solely responsible.
According to the definition of Annex I of directive 1999/92/EC, this
zone might be classified Zone 2 as it might be a place in which
an explosive atmosphere consisting of a mixture of air with
flammable substances in the form of gas is not likely to occur in
normal operation but, if it does occur, will persist for a short period
only.
In case an additional equipment is necessary (motorized valve,
pump, etc....), it must be:
■ Installed out of defined potentially flammable zone
■ Qualified as a non-ignition source for the fluid used
14
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