Lowara FHF Série Instructions Pour L'installation Et L'emploi page 20

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5.5.2 Pipe clamping
6. Start-up
6.1 Electrical connections
Make sure that the rated voltage corresponds to the supply voltage.
WARNING
Ground the pump before making any other connection.
We recommend that a high sensitivity differential switch (30 mA) be installed as extra
protection against lethal electric shocks in the event of faulty grounding.
20
FIG. 1
Correct installation
FIG. 2
Incorrect installation