5 Modular system
Operating manual mzr-2509 Ex/ mzr-2909 Ex / mzr-4609 Ex / mzr-7209 Ex
Last update: October 2016
Technische Änderungen ohne Vorankündigung vorbehalten.
31
T3
The equipment fulfils the requirements to that temperature class T3.
X
For the safe employment of the equipment within highly
combustible ranges special conditions are to be considered.
5.3.1
Construction materials of heating- and cooling module
Wetted parts
mzr-2909 Ex, mzr-4609 Ex
mzr-7209 Ex
Pump case material
stainless steel 316L (1.4404)
stainless steel 316L (1.4404, 1.4435)
table 13
Construction materials of the wetted parts
!
The resistance of the construction materials to the delivered liquids should be
verified by the operator for each individual application of the heating and
cooling module.
The chemical resistance of seals in each individual must be verified by the
operator.
5.4
Gas-tight seal module
Micro annular gear pumps are „technical tight“, but not hermetical tight. That
means there is a small possibility of gas or liquid coming out from inside of the
pump or also penetrating into the pump between the inner plates of the
structure. These plates have a super finish surface so that they are tight when
layered over each other.
For the Ex-pump additional O-rings are mounted between the plates to
increase the safety of thightness. With the gas-tight module and the fluidic seal
module micro annular gear pumps are nearly hermetical tight.
The micro annular gear pumps mzr-2909 Ex, mzr-4609 Ex and mzr-7209 Ex will
be delivered in a gas-tight version in every case.