Grundfos MAGNA3 Manual De Instrucciones página 8

6. Electrical connection
Carry out the electrical
connection and protection
according to local regulations.
Warning
Switch off the power
supply before making
connections.
Warning
The pump must be
connected to an
external mains switch
with a minimum contact
gap of 3 mm in all
poles.
Earthing or
neutralisation can be
used for protection
against indirect
contact.
If the pump is
connected to an electric
installation where an
earth leakage circuit
breaker (ELCB) is used
as an additional
protection, this circuit
breaker must trip when
earth fault currents with
DC content (pulsating
DC) occur.
The earth leakage
circuit breaker must be
marked with the first or
both of the symbols
shown below:
8
Warning
It must be possible to
lock the mains switch
in position 0. Type and
requirements as
specified in EN 60204-1,
5.3.2.
Warning
Input voltages (control
signals) coming from
external equipment
must be separated from
live parts by reinforced
insulation.
7. Operation
Warning
At high liquid
temperatures, the pump
may be so hot that only
the buttons should be
touched to avoid burns.
The surface of the
pump may be so hot
that it may cause burns
or personal injury.