5
Start Up and Operation
WARNING!
ATEX pumps in areas at risk from explosion
– Make sure that a suitably competent person
checks whether the appropriate installation infor‐
mation from the "Installation " chapter has been
implemented correctly.
– Make sure that a "recognised competent person"
checks the electrical installation and in particular
the intrinsically safe power circuits.
– Set the opening pressure of the relief valve to a
maximum of no more than 1.5 times the nominal
pressure of the pump.
WARNING!
ATEX pumps in areas at risk from explosion
Static electricity can cause ignition sparks.
– Consider potential equalisation before you
approach any pump equipment that could be at a
different electrical potential (such as pipes or tools)
WARNING!
Danger of fire with flammable feed chemicals
– Combustible media may only be transported using
stainless steel dosing heads.
– The ATEX diaphragm rupture sensor and a dis‐
charge-side flow control must both stop the pump
as soon as a diaphragm rupture or no flow is
detected.
– During filling and draining of the liquid end, an
expert must ensure that feed chemical does not
come into contact with oxygen.
– If necessary, the operator must implement further
measures.
WARNING!
Hot surface
In event the power end motor is loaded excessively, its
surface may become very hot.
– Avoid contact.
– If necessary, mount a guard plate.
Safety Information
Start Up and Operation
20