Grundfos MAGNA 25-100, Инструкция по установке и эксплуатации

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4.5 Frost protection
If the pump is not used during periods of frost,
necessary steps must be taken to prevent frost
bursts.
5. Electrical connection
The electrical connection and protection must be
carried out in accordance with local regulations.
• The pump requires no external motor protection.
• Check that the supply voltage and frequency
correspond to the values stated on the pump
nameplate.
5.1 Supply voltage
1 x 230-240 V – 10 %/+ 6 %, 50/60 Hz.
5.2 Connection to the supply
Note
Additives with a density and/or
kinematic viscosity higher than those/
that of water will reduce the hydraulic
performance.
Warning
The pump must be connected to an
external mains switch with a contact
separation of at least 3 mm in each
pole.
Earthing or neutralisation can be used
for protection against indirect contact.
Megging must be carried out as
described in section 10. Megging.
If the pump is connected to an electric
installation where an earth leakage
circuit breaker (ELCB) is used as
additional protection, this circuit
breaker must trip out when earth fault
currents with DC content (pulsating
DC) occur.
The earth leakage circuit breaker must
be marked with this symbol:
Step Action
1
TM0
3
089
8 070
5
7 mm
12 mm
2
TM
03
08
99
07
05
3
TM
03 09
00 07
05
4
T
M
03
09
01
07
05
5
TM
03
09
02
07
05
6
T
M
03
05
20
01
05
Step Action