INSTRUCTION MANUAL (ATEX)
GNExL2 and GNExL1
Flameproof Loudspeakers
1) Introduction
The GNExL2 and GNExL1 are second generation flameproof
loudspeakers which are certified to meet the requirements of
the ATEX directive 94/9/EC and the IECEx scheme. The
loudspeakers can be used
in hazardous areas where
potentially flammable atmospheres may be present. There are
four versions of each loudspeaker, 8 ohm or 16 ohm and
70V/100V Line transformer. On 70V/100V line transformer
units there are four output tappings for each size of
loudspeaker. The GNExL2 unit produces output levels in the
117dB(A) range and the GNExL1 unit produces output levels
in the 112dB(A) range.
The loudspeakers are Group II, EPL (equipment protection
level) Gb. Dependant on unit type and ambient temperature
the equipment is certified ‘Ex d IIC Gb’ and as such may be
used in Zones 1 and 2 with flammable gases and vapours with
apparatus groups IIA, IIB & IIC and temperature Classifications
of T1, T2, T3 and T4 dependant on ambient temperature, see
marking codes in section 2.
The equipment is also certified ‘Ex d IIB Gb’ and as such may
be used in Zones 1 and 2 with flammable gases and vapours
with
apparatus
groups
IIA
&
IIB
and
temperature
Classifications of T1, T2, T3, T4, T5 and T6 dependant on
ambient temperature, see marking codes in section 2.
2)
Marking
All units have a rating label, which carries the following
important information:-
Unit Type No.
GN
ExL2 or
GN
ExL1
Impedance:
8 ohm or 16 ohm
70V Line or 100V Line
Codes: GNExL1
Ex d IIC T4 Gb for Ta –60°C to +50°C
Ex d IIC T3 Gb for Ta –60°C to +70°C
Ex d IIB T6 Gb for Ta –60°C to +50°C
Ex d IIB T5 Gb for Ta –60°C to +65°C
Ex d IIB T4 Gb for Ta –60°C to +70°C
Codes: GNExL2
Ex d IIC T4 Gb for Ta –60°C to +50°C
Ex d IIC T3 Gb for Ta –60°C to +65°C
Ex d IIB T6 Gb for Ta –60°C to +50°C
Ex d IIB T5 Gb for Ta –60°C to +65°C
Certificate No.
SIRA 13ATEX1139X
IECEx SIR 13.0029X
Certificate No.
SIRA 13ATEXXXXXXX
“Warnings”
DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE
PRESENT
ELECTROSTATIC HAZARD - CLEAN ONLY WITH A DAMP CLOTH
IF TEMPERATURE EXCEEDS 70ºC
AT ENTRY OR 80ºC AT
BRANCHING POINT USE SUITABLY RATED CABLE AND CABLE
GLANDS
Year of Construction /
Serial No.
i.e. 13 / 1GL25000001
3)
Type Approval Standards
The loudspeakers have an EC Type examination certificate
issued by SIRA and have been approved to the following
standards:-
EN60079-0:2012 IEC60079-0:2011 (Ed6)
General Requirements
EN60079-1:2007 IEC60079-1:2007 (Ed6)
Flameproof Enclosure ‘d’
4)
Installation Requirements
The loudspeakers must be installed in accordance with the
latest issues of the relevant parts of the EN60079 standards or
the equivalent IEC standards – Selection, Installation and
maintenance of electrical apparatus for use in potentially
explosive atmospheres (other than mining applications or
explosive processing and manufacture):-
EN60079-14:2008
Electrical Installations in Hazardous
IEC60079-14:2007 (Ed4)
Areas (other than mines)
EN60079-10-1:2009
Classification of Areas, Gas
Atmosphere
IEC60079-10:2008 (Ed1)
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 had the necessary
training.
5)
Zones, Gas Group, Category and Temperature
Classification
The GNExL2 and GNExL1 sounders have been certified Ex d
IIC T4 , T3 and Ex d IIB T6 , T5 ,T4 dependant on ambient
temperature for full marking see section 2. This means that the
units can be installed in locations with the following conditions:-
0518
II 2G
Epsilon x:
Equipment Group
and Category:
CE Marking:
Notified Body No.
