EBARA EVM Supplementary User Instructions page 8

in the form of gas, vapour and clouds;
- Temperature class: T1, T2, T4, T5, T6 (defines the
gas ignition temperature).
5. PLATE DATA REGARDING SAFETY
The standard plates give operational data, while the
supplementary plate gives information necessary for
use in areas where the danger of explosion exists.
5.1. DESCRIPTION OF THE SUPPLEMENTARY PLA-
TE (FIG. 1)
1) Pump model;
2) Serial number (the serial number identifies the
place of production, the date and the progressi-
ve number);
3) Pump code;
4) Supplementary markings:
5.2. DESCRIPTION OF THE SUPPLEMENTARY
MARKINGS USED
Community marking regarding protection
against explosion (in accordance with DIN 40012
Appendix A).
II 2 G
pump for surface systems (group II) with the
presence of category 2 gases (G), steam or clouds,
suitable for area 1 and for additional emissions into
area 2.
ZONE 0
Area in which an explosive atmosphere, made up of
a mixture of gases or vapours, is present constantly
or for long periods.
ZONE 1
Area in which an explosive atmosphere of gas or va-
pour can form in normal working conditions.
ZONE 2
Area in which an explosive atmosphere made up of
8 – EVM
a mixture of gases or vapours would form with diffi-
culty. Should such a mixture appear in this area,
however, it would last for a short period only.
In plants, the person in charge must define the areas
in which explosive atmospheres can form, or select
apparatuses that are suitable for the areas and check
the installation, maintenance and operation condi-
tions;
EEx
symbol which refers to pumps designed and
produced in accordance with European norm stan-
dards;
c k b
these letters specify the type of protection;
In particular
c –
production safety.
k –
protection by immersion into liquid (the ignition
sources are emerged into a protective liquid in
order to render them inefficient or remove them
from the explosive atmosphere).
b –
protection by ignition source control.
IIC
substance group;
T2 to T4 resp.
Pump temperatures classification
(the maximum temperature of the internal and exter-
nal surface of the pump must be lower than the igni-
tion temperature of the atmosphere in which the ga-
ses, vapours or clouds are present) suitable for the
corresponding gas temperature classification. The
user must therefore process fluids at a temperature
that is in conformity with this classification, keeping
in mind the indications given in the relative manual
and by current legislations;
8000315792
registration number of the technical
document storage area.
5.3. NOTES
- The pumps in category 2G are suitable for areas 1
and 2;
- Pumps with a given temperature class are also sui-
table for all higher class substances (for example
pumps with a temperature classification of T4 are
also suitable for substances with T3, T2, T1 tempe-
rature classification) but evidently within the ope-