Kessel Aqualift S 100 tronic Manuel D'instructions page 36

4.4 Connect the pressure hose
Cut off the end of the pressure hose with sealing cap to fit
precisely.
Insert push-fit connector (if not yet attached).
Push the end of the pressure hose into the connector
until it stops.
The pressure hose is connected airtight.
Pull on the pressure hose lightly to check whether the
connection is secure.
Lay pressure hose continuously rising.
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