Kessel Staufix Instructions D'installation Et D'utilisation page 15

2. Installation
Each device is supplied ready for operation
and need only be installed in a gravity fed
wastewater pipe.
3. Inspection
All KESSEL backwater valves should be in-
spected once a month by the operator or by
a representative of the operator.
18 GB
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On both lockable backwater valves the emer-
gency flap should be checked by opening
and closing it several times.
Once the inspection is complete, be sure to
leave the manual locking lever in the „open"
position.
KESSEL