Electrical Installation - Grundfos MAGNA1 Installation And Operating Instructions Manual

3.4 Electrical installation

Carry out the electrical connection and protection according to
local regulations.
Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
WARNING
Electric shock
Death or serious personal injury
- Lock the main switch in position 0. Type and
requirements as specified in EN 60204-1, 5.3.2.
WARNING
Electric shock
Death or serious personal injury
- Connect the pump to an external main switch with
a minimum contact gap of 3 mm in all poles.
- Use earthing or neutralisation for protection
against indirect contact.
- If the pump is connected to an electric installation
where an electrical circuit breaker (voltage
sensing ELCB, residual-current device RCD or
residual-current circuit device RCCB) is used as
an additional protection, this circuit breaker must
be marked with the first or both of the symbols
shown below:
• Make sure that the pump is connected to an external main
switch.
• The pump requires no external motor protection.
• The motor incorporates thermal protection against slow
overloading and blocking.
• When switched on via the power supply, the pump starts after
approximately 5 seconds.
3.4.1 Supply voltage
1 x 230 V ± 10 %, 50/60 Hz, PE.
The voltage tolerances are intended for mains-voltage variations.
Do not use the voltage tolerances for running pumps at other
voltages than those stated on the nameplate.
3.4.2 Connection to the power supply
Terminal-connected versions
Step Action
Remove the front
cover from the
control box.
1
Do not remove the
screws from the
cover.
Locate the power
supply plug and
cable gland in the
2
small cardboard
box supplied with
the pump.
8
Illustration
1 x 230 V
Step Action
Connect the cable
3 gland to the
control box.
Pull the power
supply cable
4
through the cable
gland.
Strip the cable
5 conductors as
illustrated.
Connect the cable
6 conductors to the
power supply plug.
Insert the power
supply plug into
7
the male plug in
the control box.
Tighten the cable
gland.
8
Refit the front
cover.
Illustration
7 mm
7 mm
25 mm
20 mm
Min. Ø 7 mm
Max. Ø 14 mm