Electrical Connection - Grundfos DWK O 6.50.075 Montage- Und Betriebsanleitung

11. Electrical connection

The electrical connection must be carried out in
accordance with local regulations.
Warning
Before installation and the first startup of
the pump, check the condition of the cable
visually and measure the cable resistance
to avoid short circuits.
Warning
The pump must be connected to a mains
switch with a minimum contact gap of 3
mm in all poles.
The classification of the installation site
must be approved by the local fire-fighting
authorities in each individual case.
Grundfos control boxes and pump
controllers must not be installed in
potentially explosive environments.
Make sure that all protective equipment
has been connected correctly.
The supply voltage and frequency are marked on the
pump nameplate. The voltage tolerance must be
within - 5 %/+ 5 % of the rated voltage. Make sure
that the motor is suitable for the power supply
available at the installation site.
All pumps are supplied with 10 m cable and a free
cable end.
Pumps with sensors must be connected to a GU01
or GU02 pump controller. See fig.
connected pumps or fig.
pumps. For further information see the installation
and operating instructions for the selected control
box or pump controller at www.grundfos.com.
5 for DOL-
6 for star-delta-connected
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