English (GB)
9
The supply voltage and frequency are marked on the
pump nameplate. For voltage tolerance, see section
10. Technical data. 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.
The pump must be connected to one of these two
controller types:
• a control unit with motor-protective circuit
breaker, such as a Grundfos CU 100
• a Grundfos LC, LCD 107, LC, LCD 108 or LC,
LCD 110 pump controller.
See fig. 2 or 3 and the installation and operating
instructions for the selected control unit or pump
controller.
In potentially explosive environments you have two
options:
• Use float switches made for an Ex environment
and a safety barrier in combination with either
DC, DCD or LC, LCD 108.
• Use air bells in combination with LC, LCD 107.
For more information about the function of the
thermal switches, see section 7.2 Thermal switches.
3.2.1 Wiring diagrams
Fig. 2 Wiring diagram for single-phase pumps
Fig. 3 Wiring diagram for three-phase pumps
DANGER
Electric shock
Death or serious personal injury
- Before the first startup of the pump,
check the power cable for visible
defects to avoid short circuits.
A possible replacement of the power cable
must be carried out by Grundfos or a
service workshop authorised by Grundfos.
TM06 5691 5315TM06 5692 5315
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