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European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)208 743 8880
www.e-2-s.com Fax: +44 (0)208 740 4200
Document No. D199-00-101-IS Issue 1 13-07-16 Sheet 2 of 4
3) Type Approval Standards
The equipment carries an EC Type Examination Certificate
and IECEx Certificate of Conformity, and have been certified
to comply with the following standards:
EN60079-0:2012+A11:2013 / IEC60079-0:2011 (Ed 6):
Explosive Atmospheres - Equipment. General requirements
EN60079-1:2014 / IEC60079-1:2014 (Ed 7): Explosive
Atmospheres - Equipment protection by flameproof
enclosures "d"
EN 60079-31:2014 / IEC 60079-31:2013 (Ed 2): Explosive
Atmospheres - Equipment dust ignition protection by
enclosure "t"
4) Installation
Requirements
The loudspeaker must only be installed by suitably qualified
personnel in accordance with the latest issues of the relevant
standards:
EN60079-14 / IEC60079-14: Explosive atmospheres -
Electrical installations design, selection and erection
EN60079-10-1 / IEC60079-10-1: Explosive atmospheres -
Classification of areas. Explosive gas atmospheres
EN60079-10-2 / IEC60079-10-2: Explosive atmospheres -
Classification of areas. Explosive dust atmospheres
The installation of the units must also be in accordance with
any local codes that may apply and should only be carried
out by a competent electrical engineer who has the
necessary training.
5) Special Conditions of Use
Repair of the flamepath / flameproof joints is not permitted.
The plastic horn is not anti-static and the metallic enclosure
has a non-conductive coating. These may generate an
ignition-capable level of electrostatic charges under certain
extreme conditions. The user should ensure that the
equipment is not installed in a location where it may be
subjected to external conditions that might cause a build-up
of electrostatic charges on non-conducting surfaces.
Additionally, cleaning of the equipment should be done only
with a damp cloth
.
6) Location and Mounting
The location of the loudspeaker should be made with due
regard to the area over which the warning signal must be
visible/audible. They should only be fixed to surfaces that can
carry the weight of the unit.
The STEx loudspeaker should be secured to any flat surface
using the three 7mm fixing holes. The angle can then be
adjusted as required but the mounting restrictions must be
observe. See Fig 1c. This can be achieved by loosening the
two large bracket screws in the side of the unit, which allow
adjustments in steps of 18°. The enclosure provides IP66
protection and is suitable for installation in exterior locations
providing it is positioned so that water cannot collect in the
horn, and the cable entry is sealed. See figure 1.
Fig 1a. Fixing Location for Small Horn
Fig 1b. Fixing Location for Large Horn
Fig. 1c Mounting Restrictions
7) Access to the Flameproof Enclosure
In order to connect the electrical supply cables to the
loudspeaker it is necessary to remove the flameproof cover to
gain access to the flameproof chamber. To access the Ex d
chamber, loosen the M4 grub screw on the loudspeaker
cover. Open the enclosure by turning the loudspeaker cover
counterclockwise and remove the cover, taking extreme care
not to damage the flameproof threads in the process (See
figure 2).
Fig. 2 Accessing the Explosion proof Enclosure.
Warning – Hot surfaces. External surfaces
and internal components may be hot after
operation, take care when handling the
equipment.
Warning – High voltage may be present, risk
of electric shock. DO NOT open when
energised, disconnect power before
opening.
(Appropriate
cable glands to
be customer
supplied)
Flameproof cover
Grub screw