en
Installation and electrical connection
20
WILO SE 2020-05
Residual-current device (RCD)
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Install a residual-current device (RCD) in accordance with the regulations of the local
energy supply company.
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If people can come into contact with the device and conductive fluids, install a re-
sidual-current device (RCD).
6.5.2
Mains connection
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Observe information on the rating plate.
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Earth the device in accordance with local regulations.
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Install the socket so as to be overflow-proof.
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Single-phase current:
–
Shock-proof socket
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Three-phase current:
–
CEE16 socket, 5-pole, with neutral conductor
–
Clockwise rotating field
6.5.3
Switchgear
The switchgear is pre-wired and factory-set. Lay all connection cables to the
switchgear and mains connection in accordance with local regulations.
CAUTION! In-
stall the switchgear so as to be overflow-proof!
The switchgear has the following basic functions:
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Level-dependent control
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Motor protection
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Rotation direction monitoring (only for three-phase current)
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High water alarm
For detailed information, refer to the installation and operating instructions for the
switchgear:
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Electrical connection of the lifting unit to the switchgear
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Overview and description of functions
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Setting the switching points
Switching points
The switching points of the lifting unit can be adjusted to the positive suction head.
This results in a greater usable volume. The switching point data always refers to the
floor.
Switching points
Setting
DIP switch 3
Factory setting/se-
lectable
Pump ON: 180 mm (7 in)
Pump OFF: 115 mm (4.5 in)
High water alarm: 200 mm (8 in)
ON
1 2 3
•
Pump ON: 250 mm (10 in)
Pump OFF: 115 mm (4.5 in)
High water alarm: 270 mm (10.5 in)
ON
1 2 3
o
Pump ON: 315 mm (12.5 in)
Pump OFF: 115 mm (4.5 in)
High water alarm: 335 mm (13 in)
ON
1 2 3
o
Key
• = factory setting, o = adjustable
NOTICE! If the inlet is lower than the switching point “Pump ON”, there is backflow
into the inlet pipe!
NOTICE! For the position of DIP switch 3, refer to the installation and operating in-
structions for the switchgear!
6.5.4
Operation with frequency con-
verter
Operation on the frequency converter is not permitted.