_______________________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH sales@e-2-s.com Tel: +44 (0)208 743 8880
www.e-2-s.com Fax: +44 (0)208 740 4200
Document No. IS 2469-P Issue C 23-04-10
Sheet 2 of 6
Area Classification Dust:
Zone 21
Explosive dust air mixture likely to occur in
normal operation.
Zone 22
Explosive dust air mixture not likely to occur,
and if it does, it will only exist for a short time.
IP Rating:
IP67
T100ºC
Ta
< +55ºC
T115ºC Ta < +70ºC
Equipment Category:
2G/D
Ambient Temperature Range:
-50
°
C to +70
°
C
5)
Location and Mounting
The location of the unit should be made with due regard to
the area over which both the sounder and beacon warning
signal must be audible and visible. The unit should only be
fixed to services that can carry the weight of the unit.
The unit should be securely bolted to a suitable surface using
the 7mm diameter boltholes in the stainless steel U shaped
mounting bracket (see figure 1). The angle can then be
adjusted in the direction such that its warning signals can be
both heard and seen. This can be achieved by loosening the
two large bracket screws in the side of the unit, which allow
adjustment in steps of 18
°
. 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.
6)
Access to the Flameproof Enclosure
In order to connect the electrical supply cables to the unit it is
necessary to remove the beacon section to gain access to
the flameproof chamber. To achieve this remove the four M6
hexagon socket head screws (see figure 2) and withdraw the
beacon section taking extreme care not to damage the
flameproof joints in the process.
Note the four
M6 screws are Class A4-80 stainless steel
and only screws of this category can be used on these
units.
It is therefore important that these screws and their
spring washers are kept in a safe place during installation.
On completion of the cable wiring installation the flameproof
joints should be inspected to ensure that they are clean and
that they have not been damaged during installation. Also
check that the earth bonding wire between the two casting
sections is secure and the ‘O’ ring seal is in place. When
replacing the beacon section casting, ensure that it is square
with the sounder section chamber casting before inserting.
Carefully push the beacon section in place allowing time for
the air to be expelled. Only after the beacon section casting is
fully in place should the four M6 Stainless Steel A4-80 cover
bolts and their spring washer be inserted and tightened
down. If the beacon section jams while it is being inserted,
carefully remove it and try again. Never use the cover bolts to
force the beacon section casting into position.
In case of repair, contact the manufacturer for information on
the dimensions of the flameproof joints.
7)
Power Supply Selection
It is important that a suitable power supply is used to run the
unit. The power supply selected must have the necessary
capacity to provide the input current to all of the units
connected to the system. The sounder and LED beacon
sections can both be wired to the same power supply or to
different power supplies
The following table shows the input current taken by the
sounder section and beacon section of the various units:-
Unit Type
Input
Sounder
Max.
Voltage
Current I/P Volts
BExDCS110-L1D
24V
DC
265mA
30V
BExDCS110-L1D
12V
DC
195mA
15V
BExDCS110-L1D
48V
DC
130mA
50V
BExDCS110-L1D
230V
AC
56mA
253V
BExDCS110-L1D
115V
AC
110mA
126V
Unit Type
Input
LED Beacon
Max.
Voltage
Current I/P Volts
BExDCS110-L1D
24V
DC
400mA
30V
BExDCS110-L1D
12V
DC
760mA
15V
BExDCS110-L1D
48V
DC
130mA
50V
BExDCS110-L1D
230V AC
65mA
253V
BExDCS110-L1D
115V AC
135mA
126V
The above table also shows the maximum voltages at which
the units can be operated.
Sounder Section
The input current to the sounder section will vary according to
the voltage input level and the frequency of the tone selected.
The current levels shown above are for the 440Hz
Continuous tone @ nominal input voltage. The 24V and 48V
DC units and the 230V AC, 115V AC units have a switching
S/S Mounting
Bracket
Sounder
Section
Flashdome
Guard
Plastic Acoustic Horn
(Anti-static Plastic)
Fig 1
Beacon
Section
4 off Cover Screws
External Earth
Terminal
Fig 2