Grundfos ALPHA1 L - Electrical Connection

3.4 Electrical connection
DANGER
Electric shock
Death or serious personal injury
‐ All electrical connections must be carried out by a
qualified electrician in accordance with local regula-
tions.
DANGER
Electric shock
Death or serious personal injury
‐ Switch off the power supply before starting any work
on the product. Make sure that the power supply can-
not be accidentally switched on.
DANGER
Electric shock
Death or serious personal injury
‐ Connect the pump to protective earth.
DANGER
Electric shock
Death or serious personal injury
‐ In case of an insulation fault, the fault current may be
a pulsating DC. Observe national legislation about re-
quirements for and selection of Residual Current De-
vice (RCD) when installing the pump.
The pump is not a safety component and cannot be used
to ensure functional safety in the final appliance.
• The motor requires no external motor protection.
• Check that the supply voltage and frequency correspond to the
values stated on the nameplate. See section Nameplate.
• Connect the pump to the power supply with the plug supplied
with the pump. See steps 1 to 7.
Related information
5.4.1 Nameplate
3.4.1
Assembling the installer plug
Step Action Illustration
1
Loosen the cable
gland and unscrew
the union nut in the
centre of the termi-
nal cover.
TM068542TM070366
2
Detach the terminal
cover.
TM068543
3
Pull the power cable
through the cable
gland and terminal
cover.
0/Off
1/On
TM068544
4
Strip the cable con-
ductors as illustra-
ted.
42 mm
32 mm
Ø 5.5 - 10 mm
0.5 - 1.5 mm
2
8 mm
L
PE
N
TM068545
5
Loosen the screws
on the power supply
plug and connect
the cable conduc-
tors.
TM068546
x 3
TM068547
8
English (GB)