European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: +44 (0)208 743 8880
Document No. D211-00-471-IS
Issue 3
20-08-22
Sheet 3 of 6
Installation must be carried out in compliance with the
latest issue of the following 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
5) Special Conditions of Use
Special Condition for safe Use as stated on the Type
Examination Certificate DEMKO 14 ATEX 4786493904X /
CoC/IECEx ULD 14.0004X / UL21UKEX2131X:
When used for a Group III application, the surface of the
enclosure may store electrostatic charge and become a
source of ignition in applications with a low relative humidity
<~30% relative humidity where the surface is relatively free of
surface contamination such as dirt, dust, or oil.
Guidance on protection against the risk of ignition due to
electrostatic discharge can be found in EN TR50404 and IEC
TR60079-32.
End user shall adhere to the manufacturer’s installation and
instruction when performing housekeeping to avoid the
potential for hazardous electrostatic charges during cleaning,
by using a damp cloth.
To maintain the ingress protection rating and mode of
protection, the cable entries must be fitted with suitably rated,
certified cable entry and/or blanking devices during
installation.
The equipment shall only be used in an area of at least
pollution degree 2, as defined in IEC 60664-1.
6) Product Mounting and Access
6.1. Location and Mounting
The location of the beacon should be made with due regard
to the area over which the warning signal must be visible. It
should only be fixed to services that can carry the weight of
the unit.
The D2xB1LD3 beacon should be secured to any flat surface
using the two 7mm fixing holes in the feet of the base. The 2-
off mounting feet supplied with the unit must first be fitted to
the base using the 2-off M5 X 8mm countersunk screws
provided. Additional feet are available as spare parts if
required. The unit can also be pole mounted using the ¾”
NPT Entry in the centre of the base. See Fig. 1.
116,0mm [4,52in.]
1
1
6
,0
m
m
[
4
,5
2i
n
.]
168,0mm [6,55in.]
130,1mm [5,07in.]
1
3
2
,4
m
m
[
5
,1
7
in
.]
Ø6,92mm [Ø0,270in.]
3/4" NPT
(For pole mount)
M5 X 8mm
Countersunk screw,
customer to fix
Fig. 1 Fixing Locations
6.2. Access to the Enclosure
Warning – High voltage may be
present, risk of electric shock.
DO NOT open when energised,
disconnect power before opening.
Warning – Hot surfaces. External
surfaces and internal components
may be hot after operation, take
care when handling the equipment.
To access the enclosure, loosen the four M4 posi pan head
screws and withdraw the cover.
Fig. 2 Accessing the Enclosure.
To replace cover, check that the ‘O’ ring seal is in place.
Carefully push the cover in place. Insert M4 screws with fibre
washers and tighten to 3Nm torque.
7)
Selection of Cable, Cable Glands, Blanking
Elements & Adapters
When selecting the cable size, consideration must be given
to the input current that each unit draws (see Table 4), the
number of beacons on the line and the length of the cable
runs. The cable size selected must have the necessary
capacity to provide the input current to all of the sounders
connected to the line.
When selecting the cable size consideration must be given to
the voltage drop over the length of the cable run to ensure
the min. input voltage at the point of use (voltage range, see
section 14)
The voltage drop depends on:
-
The total current draw of the devices installed on
this cable run
-
The wire size and total length of the cable run,
determining the total resistance of this cable run
-
The minimum output voltage supplied by the power
supply
The voltage drop and input voltage at the point of use can be
calculated as follows:
Total Wire resistance =
Wire resistance / 1000ft x length of cable run x 2
(length of cable run needs to be multiplied by two to account
for two wires going to and from the unit)
Total current draw =
Current draw per unit x number of units
Voltage Drop = Total current draw x Total wire resistance
Minimum output of power supply =
Min. voltage at point of use + voltage drop
M4 Cover
Screw (4-off)
(Appropriate cable
entry devices to be
customer supplied)
Cover
