arpadveress 
Any Ex non-electrical machine that needs to be compliant with the ATEX Directive Module A – for Category 2 (ie, Zone 1/21) this shall be declared in a retention of documentation stored at a Notified Body – further it shall be subject of testing and certification of Fire Authority.
Regulation you may find it here:
https://net.jogtar.hu/jogszabaly?docid=a0900022.onm
Which states:
3. The requirements of this Regulation shall not apply to:
…
(b) in the case of apparatus, machinery or equipment which may be subject to fire or explosion,
(ba) the operation of which requires the use of an open flame,
(bb) which requires the operation of heat-generating equipment capable of reaching operationally the ignition temperature, flash point or flash point of materials produced by the technology,
(bc) which, during normal operation, generate an open flame,
bd) * having only a function of pressure regulator, volume or mass flow meter,
be) * subject to the Regulation on technical requirements for fire protection of installations for the use of renewable energy sources such as biogas, bioethanol, biodiesel,
(bf) * of 16 December 2008 on the classification, labeling and packaging of substances and mixtures, amending and repealing Directives 67/548 / EEC and 1999/45 / EC and amending Regulation (EC) No 1907/2006 i) flammable gases or gases under pressure according to Regulation (EC) No 1272/2008 of the European Parliament and of the Council (hereinafter “CLP Regulation”) are used in a closed system for cooling only,
(bg) * which comply with Directive 2014/68 / EU of the European Parliament and of the Council of 15 May 2014 on the harmonization of the laws of the Member States concerning the marketing of pressure equipment, or
bh) * in which only flammable liquids of the hazard class CLP are stored.
BUT according to the law of 96 year XXXI. see here:
http://njt.hu/cgi_bin/njt_doc.cgi?docid=26565.366929
Which states:
flammable or explosive apparatus, machinery, equipment: equipment used for the classification, labeling and packaging of substances and mixtures, amending and repealing Directives 67/548 / EEC and 1999/45 / EC, and 1907/2006 / EC; Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 amending Regulation (EC) No 1272/2008 (hereinafter referred to as Regulation (EC) No 1272/2008)
(ia) flammable gases,
(ib) flammable aerosols,
ic) flammable liquids,
(id) flammable solids,
ie) self-reactive substances and mixtures of types A, B, C or D,
if) pyrophoric liquids,
ig) pyrophoric solids,
(ih) substances and mixtures which, in contact with water, emit flammable gases of category 1 or 2,
(ii) Category 1 oxidising liquids,
(ij) oxidising solids of category 1; or
ik) Organic peroxides type A, B, C or D
Designed and manufactured for the production, processing, use, storage or weighing of a substance or mixture in one of its hazard classes or categories;
It also states that additional Fire Test must be taken, see below
The manufacturer, distributor, importer or authorized representative, or, in the absence thereof, the customer or the user, before the introduction, placing on the market or, in their absence, use of fire or explosive technology shall or have the results of such investigations made available to the fire authority upon request.
Why is it important to mention all above?! In many contracts manufacturer is responsible for full compliance, but not aware of details… then a long fight starts immediately… it is better to be updated!
Keep up good work!
Arpad
