Kessel Aqualift S Basic Mono Tronic Instructions D'installation Et D'utilisation page 37

7.3 Level measurement
Open the twist lock.
Pull the alarm probe (optional) and float switch out of the
brackets.
Immerse parts in a water bath for cleaning and wipe off
with a damp cloth afterwards.
Assemble the components again in reverse order.
7.4 Backflow preventer
CAUTION
Accumulated wastewater flows out!
Open the turn fastener.
Pull out the non-return flap.
Clean the non-return flap.
Check the components for wear and reassemble in
reverse order.
Check tank for heavy soiling, clean if necessary.
Do not use pointed objects.
Maintenance is completed.
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