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INDUSTRIAL PUMPS
www.
debem.com
Chapter 2 - Introductory Information
Translation of Original Instructions - BOXER rev.
2021
2.3 ATEX MARKING AND DEFINITION
All BOXER Air Pumps comply with the Community Directives for the free circulation of goods applicable
to them
(
see Declaration of Conformity
)
.
They are manufactured in STANDARD version in ATEX
II 3G Ex h IIB T4 Gc
and
II 3D Ex h IIIB T135°C DcX
execution for use in
“Zone 2-Zone 22”
(in the presence of flammable
gas and powders)
and
in ATEX
I M2 Ex h I Mb X
execution for use in
mines in areas with low impact
risk
“Zone M2”
(in the presence of potentially explosive atmosphere consisting of fireside and coal dust)
.
Upon specific Order request, pumps can be supplied in CONDUCT version in ATEX
II 2G Ex h IIB
T4 Gb
and
II 2D Ex h IIIB T135°C DbX
execution for use in
“Zone 1 - Zone 21”
.
CAUTION
The Identification Plate of the pump shows the ATEX marking and the category of the equipment.
Check com-
pliance with he classification of the installation “Zone” before carrying out the installation.
The equipment user is responsible for classifying their installation zone.
Below is the definition of the ATEX marking of each execution.
: safety symbol in accordance with DIN 40012 attachment A.
II 3 G/ II 3 D
: surface equipment for use in areas where the presence of gases, vapours or mists in addition to clouds
of combustible powder in the air is unlikely during normal operation, both in external and internal areas
and, if it does occur, it will only persist for a short period (Zone 2 - Zone 22).
II 2 G/ II 2 D
: surface equipment for use in areas with the presence of gases, vapours or mists in addition to clouds of
combustible dust in the air that occur occasionally during normal operation, both in external and internal
areas (Zone 1 - Zone 21).
I M2
: category M2 equipment that can be installed in mines in “hazardous condition 2” or in potentially explo-
sive atmosphere consisting of firedamp and coal dust.
... * * * Ex * * * *
Temperature Class
(group II):
Maximum
surface
temperature
Class
[°C]
T1
= 450
T2
= 300
T3
= 200
T4
= 135
T5
= 100
T5
= 85
Ambient reference tempera-
ture minus 5°C - 60°C.
For the class of powders,
the maximum surface tem-
perature is followed by the
letter “
T”
: e.g.
T100°C.
Gas Group:
I
= Mines (Methane)
II
= Surface industries
IIA
= *Propane, etc.
IIB
= *Ethylene, etc.
IIC
= *Hydrogen,
*Acetylene etc.
* Example of Representative trigger gases.
Powder Group:
IIIA
= *Volatile fuels, etc.
IIIB
= *Non-conductive powder, etc.
IIIC
= *Conductive powder, etc.
*Example of Representative trigger pow-
ders.
Method of protection:
see list below.
Equipment protection level:
Gb =
Protection Level b for Gas
Db =
Protection Level b for Powders
in accordance with EN 80079-37
CE Mark
Identification Number
of the Notified Body
Equipment use in a
potentially explosive atmosphere
Equipment
Group:
M1
= very high
protection
M2
= high
protection
1
= very high
protection
2
= high
protection
3
= normal
protection
Surface
Equipment
Group:
I
= Mines
II
= Surface
Type of explosive
atmosphere
(group II):
G D
Vapours Powders
of Gas
0 20
1 21
2 22
