E2S BEL25D Serie Manuel D'instructions page 5

2) Marking
All units have a rating label, which carries the following
important information:-
BExL25D or BExL15D
Unit Type No.
Impedance: 8 ohm or 16 ohm
100V Line
EEx d IIC T4 (T
Code:
KEMA 99ATEX6312
Certificate No.
Epsilon x:
Gas Group and
Category:
CE Marking:
Notified Body No.
Warnings:
DO NOT OPEN WHEN AN EXPLOSIVE
GAS ATMOSPHERE IS PRESENT
COVER BOLTS CLASS A4-80
USE HEAT RESISTING CABLES AND CABLE GLANDS
(Rated 95ºC) AT AMB. TEMPERATURES OVER 40ºC
4) Installation Requirements
Loudspeakers must be installed in accordance with the
following or equivalent standards.
BS EN 60079-14 : 1997
BS EN 60079-10 : 1996
Installation should only be carried by competent personnel
and any local codes of practice applied.
5) Zones, Gas Group, Category and Temperature
Classification
The units can be installed in locations with the following
conditions:-
Area Classification:
Zone 1 Explosive gas air mixture likely to occur in
normal operation.
Zone 2 Explosive gas air mixture not likely to occur,
and if it does, it will only exist for a short time.
_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
Document No. BExL25D and BExL15D English
INSTRUCTION MANUAL (ATEX) (GBR)
BExL25D and BExL15D
°
. –50 to +55 C)
amb
II 2G
0344
Electrical Installations in Hazardous
Areas (other than mines)
Classification of Hazardous Areas
Issue A
Gas Groupings:
Equipment Category:
Temperature Classification:
Ambient Temperature Range:
6) Loudspeaker Location and Mounting
See drawing A
7) Safety Warning (Electrostatic Hazard)
The acoustic horn section is made of ABS Plastic; therefore
to avoid a possible ELECTROSTACTIC CHARGE the unit
must only be cleaned with a damp cloth.
8) Access to the Flameproof Enclosure
See drawing B
Note the four M6 screws are Class A4-80 stainless steel
and only screws of this category can be used on these
sounders. It is therefore important that these screws and
their spring washers are kept in a safe place during
installation.
9) Power Amplifier Selection
It is important that the loudspeakers are connected to power
amplifiers that have outputs that are compatible to the type of
loudspeaker being used. Loudspeakers with a 100V line
matching transformer fitted must be connected to a power
amplifier with a 100V line output. Low impedance 8 ohm or
16 ohm loudspeakers must be connected to amplifiers with a
suitable low impedance output. When selecting the cable size
consideration must be given to the current that each unit
draws, the number of loudspeakers on the line and the length
of the cable runs.
The following table shows the range of loudspeakers:-
Unit Type
BExL25D
BExL25D
BExL25D
(Four Sheets) 10-10-02
Flameproof Loudspeakers
Group IIA Propane
Group IIB Ethylene
Group IIC Hydrogen and Acetylene
2G
o
T1 400 C
o
T2 300 C
o
T3 200 C
o
T4 135 C
-50°C to +55°C
Input Wattage
100V Line 25W
8 ohm 25W
16 ohm 25W
sales@e2s.com Tel: +44 (0)208 743 8880
www.e2s.com Fax: +44 (0)208 740 4200
Max.
I/P Volts
100V
14.14V
20V
)
(5