EN
8.4 Backflow preventer
Loosen the screws.
Remove flap housing.
CAUTION
Accumulated wastewater flows out!
Clean flap housing and backwater flap in a water
bath.
Make sure that the backwater flap can move freely.
Re-fit flap housing.
Check tank for serious contamination, clean if necessary.
Sharp devices are not suitable.
8.5 Electrical connection
NOTICE
Disconnect system from energy sources!
Ensure that the electrical components are discon-
nected from the electrical power supply during
the work.
Check the connection pipes for mechanical damage.
Carry out isolation measurement of the pump.
92 / 144 Pumping station / Installation and operating manual 016-102_01 DE_EN_FR
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