CAUTION!
Only operate stroke length actuators / control drives
when the pump is running.
Otherwise they will become damaged.
WARNING!
Danger of electric shock
In the event of a defect, there is a danger of electric
shock if conductive feed chemicals are present.
– For safety reasons, we recommend connecting to
protective low voltage, e.g. in accordance with EN
60335-1 (SELV).
CAUTION!
Danger resulting from unnoticed diaphragm rupture
If the pump has been ordered with an electric diaphragm
rupture sensor, it must also be electrically installed.
– Electrically wire the enclosed diaphragm rupture
sensor to a suitable monitoring device.
a) Diaphragm rupture sensor with switch contact
–
The cable can be connected as required.
b) Namur sensor, inherently safe
Make sure that the monitoring/feed equipment installed by the customer is
capable of evaluating the current variations of the Namur sensor to indi‐
cate a diaphragm rupture!
WARNING!
The following applies in areas at risk from explosion:
– Note the details of the type examination certificate
PTB 00 ATEX 2048 X for the Namur sensor
NJ1.5-8GM-N as well.
Connect the stroke sensor to a suitable monitoring device according
to the technical data provided with the monitoring device and that of
the stroke sensor - see chapter "Technical data".
Make sure that the monitoring/feed equipment installed by the cus‐
tomer is capable of evaluating the current variations of the Namur
sensor to indicate a stroke.
Diaphragm rupture sensor (optional)
Stroke sensor (identity code specification
"Stroke sensor": 3)
Installation, electrical
36
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