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Installation
7
Installation
7.1 Installation, hydraulic
22
CAUTION!
Danger of injury to personnel and material damage
Disregarding the technical data when installing may lead to
personal injuries or damage to property.
–
Observe the technical data- refer to chapter "Technical
Data" and, where applicable, the operating instructions
of the accessories.
WARNING!
ATEX pumps in areas at risk from explosion
–
Metering pumps in areas at risk from explosion are as a
matter of course provided with a suitable safety relief
valve on the outlet side of the metering pump (which is
used to protect against excessive heating due to over‐
loading and impact sparks caused by the breakage of
power end parts triggered by overloading).
–
Likewise a temperature monitor or a pressure side flow
control is to be fitting to metering pumps with hydraulic
diaphragm control for T4. (Protection against impermis‐
sible heating up in the event of continuous operation by
the internal relief valve).
–
In the event of differing temperature classes amongst
the diverse components, operation of the complete
pumps should be based on the component with the
lowest temperature class.
–
Hydraulic diaphragm pumps are highly suitable, although
the design with Ex "i" diaphragm rupture sensor and a
pressure-side flow control is required.
–
Ensure that installations in areas at risk from explosion
are checked by a "recognised competent" person.
–
Please note the relevant national regulations during
installation!
WARNING!
Danger of fire with flammable feed chemicals
–
Combustible media may only be transported using stain‐
less steel or Hastelloy C dosing heads.
–
Metering pumps can be used for metering combustible
media, however as a matter of principle only of a design
including ATEX diaphragm rupture sensors and a pres‐
sure-side flow control.
–
During filling and draining of the liquid end, an expert
must ensure that feed chemical does not come into con‐
tact with oxygen.
–
If necessary, the operator must implement further meas‐
ures.
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