ATEX SAFETY INSTRUCTIONS
The following information is in accordance with the Essential Health and Safety
Requirements (Annex II) of the EU Directive 2014/34/EU [the ATEX Directive - safety of
apparatus] and is provided for those locations where the ATEX Directive is applicable.
General
a) This equipment must only be installed, operated and maintained by competent
personnel. Such personnel shall have undergone training, which included instruction
on the various types of protection and installation practices, the relevant rules and
regulations, and on the general principles of area classification. Appropriate refresher
training shall be given on a regular basis. [See clause 4.2 of EN 60079-17].
b) This equipment has been designed to provide protection against all the relevant
additional hazards referred to in Annex II of the directive, such as those in clause 1.2.7.
c) This equipment has been designed to meet the requirements of EN 60079-15.
Installation
a) The installation must comply with the appropriate European, national and local
regulations, which may include reference to the IEC code of practice IEC 60079-14. In
addition, particular industries or end users may have specific requirements relating
to the safety of their installations and these requirements should also be met. For
the majority of installations the Directive 1999/92/EC [the ATEX Directive - safety of
installations] is also applicable.
b) This apparatus is an associated electrical apparatus and is normally mounted in a
non-hazardous [safe] area. Specific apparatus described as Category 3 compliant may
be installed in a Zone 2 location providing that the relevant installation conditions
are met. When mounted in a Zone 2 location the apparatus must be provided with
an enclosure, which offers an additional degree of protection appropriate to the area
classification.
c) Unless already protected by design, this equipment must be protected by a suitable
enclosure against:
i) mechanical and thermal stresses in excess of those noted in the certification
documentation and the product
specification
ii) aggressive substances, excessive dust, moisture and other contaminants.
Read also the Special Conditions for Safe Use (below) for any additional or more specific
information.
Special Conditions of Safe Use for Zone 2 applications
a) When used in Zone 2, the equipment must be installed in an enclosure
or an environment that provides a degree of protection of at least IP54
and meets the relevant material and environmental requirements of EN
60079-0:2012 and EN 60079-15:2010.
b) The equipment must not be inserted or removed unless either:
i) the area in which the equipment is installed is known to be non-
hazardous or
ii) the circuit to which it is connected has been de-energised.
c) The 24V supply for this equipment must be derived from a regulated
power supply complying with the requirements of European
Community Directives.
d) For 4511, 4514, 4514B, 4514D, 4516, 4516C, 4517, 4526 & 4532 only:
Relay contacts may switch up to 35V, 0.5A and 10W.
For 4575: Relay contacts may switch up to 35V, 250mA.
e) Any backplane used does not form part of this certificate and shall be
separately certified for use in Zone 2.
f) The associated backplane must be fitted with MTL4500 retention clips
(use type MCK45 if not fitted) that allow the equipment to be ‘clipped’
to the backplane. The retention clips shall always be in place when the
equipment is energised.
g) For 4573 Maximum Input/Output parameters – see certificate
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