European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: +44 (0)208 743 8880
Document No. D199-00-601-IS
Issue 4
17-01-22
Sheet 3 of 8
5) Special Conditions of Safe Use
Repair of the Flame Path is not permitted.
Figure 1: Flame Path
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.
6) Product Mounting and Access
6.1. Location and Mounting
The sounder should be secured to any flat surface using the
three 7mm fixing holes (see figure 2). The angle can then be
adjusted as required but the mounting restrictions must be
observed (see outline drawings for details, D199-05-601 for
STExC1X05F and D199-05-621 for STExC1X05R). This can
be achieved by loosening the two large bracket screws in the
side of the unit, which allow adjustments in steps of 18°.
Figure 2: Fixing Location for STEx Combined Beacon and Alarm
Horn Sounder.
On completion of the installation the two large bracket
adjustment screws on the side of the unit must be fully
tightened to ensure that the unit cannot move in service.
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.
6.2. Access to the Flameproof Enclosure
Warning
–
Hot surfaces. External
surfaces and internal components
may be hot after operation, take
care when handling the equipment.
In order to connect the electrical supply cables to the sounder
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 sounder cover. Open the
enclosure by turning the sounder cover counterclockwise and
remove the cover, taking extreme care not to damage the
flameproof threads in the process (See figure 3).
Figure 3: Accessing the Explosion Proof Enclosure.
On completion of the installation, the flameproof threaded joint
should be inspected to ensure that they are clean and that they
have not been damaged during installation.
Ensure
that the ‘O’ ring seal is in place
and undamaged.
When fitting the flameproof cover ensure the thread is
engaged correctly. Fully tighten the cover all the way, ensure
no gap is visible between the cover and base of the sounder
enclosure. Tighten the M4 grub screw.
7) Installation Requirements
7.1. Installation Standards Compliance
Warning
–
High voltage may be
present, risk of electric shock.
DO NOT open when energised,
disconnect power before opening.
The sounder must only be installed by suitably qualified
personnel in accordance with the latest issues of the relevant
standards.
ATEX / IECEx installation 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.
7.2. Access to PCB Terminals
The beacon board is pre-wired to the sounder board.
To access the sounder PCB terminals, loosen the
thumbscrews (see Figure 4) by two turns and rotate the
beacon board out.
