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2.4 General safety information on the Duodos
2.4.1 Safety information on the medium to be pumped and the diaphragm
Danger from hazardous substances!
Fig. 4: Handling hazardous sub‐
stances
Service life of the diaphragm
Fig. 5: The service life of the dia‐
phragm
In the event of a diaphragm rupture
Please ensure when handling hazardous substances that you have
read the latest material safety data sheets provided by the manu‐
facturer of the hazardous substances. The measures required are
described in the material safety data sheet. Check the material
safety data sheet regularly and replace, if necessary, as the hazard
potential of a substance can be re-evaluated at any time based on
new findings.
The system operator is responsible for ensuring that the material
safety data sheets are available and that they are kept up to date,
as well as for producing an associated hazard assessment for the
workplaces affected.
The service life of the diaphragm cannot be precisely specified.
You therefore need to assume that the diaphragm will rupture and
that liquid will then escape.
You should also prevent particles of the faulty diaphragm entering
the medium being pumped. You can prevent contamination,
for example by filtration, installation of a hose rupture indicator or
other measures appropriate for the respective process.
A2992
In the event of a diaphragm rupture, the pumped medium can enter
the air system of the double diaphragm pump and from there into
the atmosphere. If the feed chemical is a dangerous, harmful or
toxic substance, the air outlet must be routed to a suitable area
where safe disposal is possible.
Safety and responsibility
9
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