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4.6
Connection diagram, Mono/Duo
a
Mains input
b
Pump 1
c
Pump 2 (Duo only)
d
Optical probe/level
probe
016-328
e
Pressure sensor
g
Ext. signal generator
(art. - no. 20162)
h
Potential-free con-
tact (plug-in printed
boards for retrofitting.
art. no. 80072)
i
If an alternative
pressure sensor is
installed, use the bot-
tom connection.
Installation and operating instructions
33 / 124
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