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The supply voltage and frequency are marked on the
pump nameplate. The voltage tolerance must be
within - 10 %/+ 6 % 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.
DANGER
Electric shock
Death or serious personal injury
- Prior to installation and the first startup
of the pump, check the cable for visible
defects to avoid short circuits.
A possible replacement of the cable must
be carried out by Grundfos or a service
workshop authorised by Grundfos.
The pump must be connected to one of these two
controller types:
•
a control box with motor-protective circuit
breaker, such as Grundfos CU 100 control box
•
a Grundfos LC, LCD 107, LC, LCD 108 or LC,
LCD 110 pump controller.
See fig.
6
or
7
and the installation and operating
instructions for the selected control box or pump
controller.
In potentially explosive environments you have two
options:
•
Use float switches made for 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
12
8.4 Thermal
switches.
8.1 Wiring diagrams
L
N
PE
PE
1
2
3
1
Fig. 6
Wiring diagram for single-phase pumps
L1
L2 L3
PE
PE
1
2
3
3
Fig. 7
Wiring diagram for three-phase pumps
8.2 CU 100 control box
The CU 100 control box incorporates a motor-
protective circuit breaker and is available with level
switch and cable.
Single-phase pumps
Connect a run capacitor to the control box.
For capacitor size, see the table:
Pump type
DP and EF
4
5
6
T2
T1
T3
160
˚
C
150
˚
C
4
5
6
T2
T1
T3
˚
˚
170
C
150
C
Run capacitor
[μF]
[V]
30
450
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