Flexfilter Ex And Atex; Area Classification; Area Extension; Category Limit - Nederman FlexFilter EX Manual De Instrucciones

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FlexFilter EX and ATEX

2.1

Area classification

All FlexFilter EX are marked with the
equipment according to directive 2014/34/EU. This means that models with
the EX symbol may be placed in areas classified as zone 22 according to
directive 1999/92/EC.
2.2

Area extension

If the FlexFilter EX is used to collect combustible dust, the area surrounding
the outlet of the collected material is to be considered as an "EX-area"
according to the Directive 1999/92/EC.
This means that the area surrounding the outlet should be classified as an EX
zone. The extent and type of zone depends on many different factors such as
ventilation, feed out frequency, design of the collecting container etc.
It lies within the responsibility of the customer/end-user to determine,
develop proper documentation and mark this area according to the Directive
1999/92/EC.
As a general rule improving ventilation and implementing regular routines for
cleaning will minimize the extent of the EX area and reduce the classification
of the zone.
Picture no. 2 shows a general example of how the EX-area extends around the
FlexFilter EX.
2.3

Category limit

The function of the FlexFilter EX is to be a part of an extraction system. Even if
the FlexFilter EX with
it can be used with piping system internally classified as zone 20 or 21.
The internal side of the FlexFilter is generally classified as zone 20 or 21.
As there is no internal ignition source inside the Flex-Filter EX, the inside is to
be considered as simple filter/silo and does not fall under the scope of the
directive 2014/34/EU*
* Source: ATEX 2014/34/EU Guidelines 2017 § 243 Filter units and vented silo
bins.
2.4

Permitted materials

It is of outmost importance to know the properties of the extracted material.
The FlexFilter EX is intended to be a part of an extraction system collecting
material with the following properties:
MIE (Minimum Ignition Energy) > 1 mJ
MIT (Minimum Ignition Temperature) > 205 ºC.
Kst: See the product identification plate.
Pmax: See the product identification plate.
Materials with properties not given within the above stated values must
be investigated prior to use with the FlexFilter EX. Contact Nederman for
technical support and Dust Application investigation.
symbol and are category 3D
symbol is category 3D equipment for use in zone 22,
FlexFilter EX EN
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