WARNING!
ATEX pumps and flammable media
Only with material versions PP_, PV_ and PC_: The igni‐
tion temperature is reduced significantly below the igni‐
tion temperature at atmospheric pressure due to com‐
pression with the discharge stroke of the possibly
ignitable vapour-air mixture.
– Do not allow it to run dry. Take appropriate protec‐
tive measures.
–
Immediately switch off the pump in the event of a
diaphragm rupture.
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
1127-1.
WARNING!
ATEX pumps in areas at risk from explosion
If abrasive media are being metered, they will escape as
soon as all layers of the diaphragm have eroded
through.
– Wire the electrical diaphragm rupture indicator to
stop the pump in the event of a diaphragm rupture.
WARNING!
ATEX pumps in areas at risk from explosion
– Electrically wire all electrical units cleanly and per‐
manently to an electrically clean earthing point, -
e.g. with an earthing bar on your system.
–
Electrically connect the electrical units 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 enclosed documentation 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-delay residual current device.
– Observe the enclosed operating instructions for the
Ex motor.
Safety chapter
14
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