Kessel Aqualift Comfort 400V Mono Instructions De Pose Et D'utilisation page 58

4.5.2 Install ATEX sensors
4.5.2.1 Connecting ATEX float switch
Fig. 6: Float switches Mono ATEX
Connect the cable ends of the float switches to the terminals
of the Zener barrier (see "Fig. 6: Float switches Mono ATEX
").
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Fig. 7: Float switches Duo ATEX
Connect the cable ends of the float switches to the terminals
of the Zener barrier (see "Fig. 7: Float switches Duo ATEX").
Level sensor Mono/Duo ATEX
Connect the cable ends of the level sensor to the terminals
(see "Fig. 8: Pegelsonde ATEX"). The connection of level
sensors is identical for both Mono and Duo systems.
WARNING
Only connect level sensors to the Zener barrier,
which fulfil the ATEX requirement.
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