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WARNING!
ATEX pump and flammable media
The ignition temperature is reduced significantly below
the ignition temperature at atmospheric pressure due to
compression with the discharge stroke of the possibly
ignitable vapour-air mixture.
–
Only use pumps with electrically conductive dosing
heads.
–
Do not allow it to run dry. Take appropriate safety
measures – for instance, install a flow meter.
–
The customer must wire a diaphragm rupture indi‐
cator or flow meter to ensure that it immediately
stops the pump.
WARNING!
ATEX pumps in areas at risk from explosion
If feed chemicals are metered, which tend to produce
exothermic reactions or self-ignite (examples of exo‐
thermic reactions: pyrophoric substances with air, alkali
metal with water, decomposition of organic peroxides,
polymerisation reactions), they can lead to high tempera‐
tures and ignition.
–
Put in place measures in accordance with EN
80079-38.
WARNING!
ATEX pumps in areas at risk from explosion
If abrasive media is being metered, it will escape as
soon as all layers of the diaphragm have eroded
through.
–
Wire the electrical diaphragm rupture indicator to
immediately stop the pump in the event of a dia‐
phragm rupture.
WARNING!
ATEX pumps in areas at risk from explosion
–
Electrically wire all electrical assemblies cleanly and
permanently to an electrically clean earthing point, -
e.g. with an earthing bar on your system.
–
Electrically connect the assemblies fitted with a
potential equalisation cable to each other, cleanly
and permanently, to an electrically clean potential
equalisation point - e.g. with a potential equalisation
bar on your system.
–
Note the documentation supplied for the individual
electrical components.
WARNING!
ATEX pumps in areas at risk from explosion
–
Use a suitable motor protection switch to protect
power end motors. Use motor protection approved
for this application with Ex"e" motors. (Protection
against warming caused by overloading)
–
Provide a time-delayed residual current safety
device.
–
Observe the enclosed operating instructions for the
Ex motor.
Safety chapter
18
Содержание Sigma / 2 Basic S2Ba
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