CAUTION!
Warning of unnoticed diaphragm rupture
Only above approximately 2 bar system back pres‐
sure is a signal generated in the event of the rup‐
ture of a diaphragm.
– Only rely on the diaphragm rupture sensor with
back pressures of greater than 2 bar.
Or install a back pressure valve and set it to a
minimum of 2 bar – if the installation permits
this.
When using flammable media:
WARNING!
Danger of fire with flammable feed chemicals
Make sure that the electric diaphragm rupture
sensor switches off the pump immediately after a
diaphragm rupture.
– Connect the pump and the diaphragm rupture
sensor to a control so that the pump stops
immediately in the event of a diaphragm rup‐
ture.
Connect the stroke sensor to a suitable monitoring device in
line with the details in the "Technical data" chapter - also
refer to their technical data!
Make sure that the monitoring/feed equipment installed by
the customer is capable of evaluating the current variations
of the Namur sensor to indicate a stroke.
WARNING!
The following applies in areas at risk from explo‐
sion:
– Note the details of the type examination certifi‐
cate PTB 00 ATEX 2048 X for the Namur
sensor NJ1.5-8GM-N as well.
Connect the electrical components of the entire installation sup‐
plied cleanly and permanently to an electrically clean earthing
point, e.g. with an earthing bar on site - see potential equalisation
diagrams in the appendix.
The entire installation supplied is provided ex works with the nec‐
essary potential equalisation lines. Electrically connect an addi‐
tional potential equalisation cable from the potential equalisation
cables from this system cleanly and permanently to an electrically
clean potential equalisation point, e.g. to a potential equalisation
bar on site.
Stroke sensor (optional)
Earthing lines
Potential equalisation line (prescribed
in the area at risk from explosion)
Installation
44
Содержание Makro TZ
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