14 Installation, Operating and Maintenance Instructions (Original Instructions)
VMS Vertical Multistage Pumps
14
5.10 Explosion safety
ATTENTION! This sub-chapter contains fundamental information which has to be taken into
consideration when installing the pump with ATEX permission in a hazardous
environment.
ATTENTION! Because of the probable creation of sparks during loosening and tightening of nuts
and bolts, the pump(s) should not be opened, closed, assembled or disassembled, in
an explosive hazardous environment.
ATTENTION! When there is an ATEX sticker on the pump, the pump must only be used for
pumping a medium with a conductivity higher than 50 pS/m.
5.10.1 General
Stickers or indicators on the pump sleeve and the motor indicate whether the pump is suitable for use in an
environment with risk of explosion.
It is allowed to install the pump in a zone which is classied in directive 1999/92/EC.
When in doubt it is compulsory to check the above directive.
5.10.2 Indication
II 2G IIC T3 X
Sulzer Pump Solutions Ireland Ltd.
Clonard Road, Wexford, Ireland.
1563-00
Figure 6. Indication sticker; explosion safety
Table 8. ATEX marking
Indication Meaning
II Product group for use above ground, with the exception of mine working where there can be a danger of explosion due to
mine gas and/or ammable substances.
2 Category 2: Equipment in this category is intended for use in areas in which explosive atmospheres caused by mixtures of
air and gases, vapours or mists, or by air/dusts mixtures are likely to occur.
3 Category 3: Equipment in this category is intended for use in areas in which explosive atmospheres caused by mixtures
of air and gases, vapours or mists, or by air/dusts mixtures are likely to occur or, if they do occur, are likely to do so only
infrequently and for a short period only.
G Suitable for an environment that is explosive due to gas, vapour or fumes; not suitable for an environment that is explosive
due to dust.
T4 / T3 Temperature class:
T4 for maximum surface temperature 135 °C
T3 for maximum surface temperature 200 °C
5.10.3 Medium temperature
The applied ATEX motor determines the maximum allowable temperature of the pumped liquid (see Table 9,
“Maximum medium temperatures”).
Table 9. Maximum medium temperatures
ATEX marking motor Maximum allowable medium temperature
Exe T3 60 °C
Exd T4 100 °C
Exde T4 100 °C
Others Maximum ambient temperature of motor
To Next Page
Loading...
