Grundfos CMV, Инструкция по установке и эксплуатации

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English (GB)
9
6.2.1 Pipe connection
Fig. 2 Suction and discharge ports
Torques
7. Electrical installation
Check that the mains voltage and frequency
correspond to the values on the motor nameplate.
7.1 Supply cable
In order to comply with the EN 60335-1 standard,
the supply cable must as minimum be rated for an
operating temperature of +105 °C (+221 °F).
7.2 Motor protection
Single-phase motors, 1 x 115/230 V, 60 Hz , do not
incorporate motor protection and must be connected
to a motor-protective circuit breaker which can be
manually reset. Set the motor-protective circuit
breaker according to the rated current of the
motor (I
1/1
). See nameplate.
Other single-phase motors have built-in current-
and temperature-dependent motor protection in
accordance with IEC 60034-11 and require no further
motor protection. The motor protection is of the
TP 211 type which reacts to both slow- and
quick-rising temperatures. The motor protection is
automatically reset.
Three-phase motors must be connected to a
motor-protective circuit breaker which can be
manually reset. Set the motor-protective circuit
breaker according to the rated current of the
motor (I
1/1
). See nameplate.
7.3 Electrical connection
Carry out the electrical connection as shown in the
diagram inside the terminal box cover.
Fig. 3 Wiring diagram
7.4 Frequency converter operation
All three-phase motors can be connected to a
frequency converter.
Depending on the frequency converter type, this may
cause increased acoustic noise from the motor.
Furthermore, it may cause the motor to be exposed
to detrimental voltage peaks.
* MG 71- and MG 80-based motors with phase
insulation are available on request.
The above disturbances, i.e. both increased acoustic
noise and detrimental voltage peaks, can be
eliminated by fitting an LC filter between the
frequency converter and the motor.
For further information, please contact the frequency
converter supplier or Grundfos.
Caution
Take care to avoid damaging the pump
when connecting the suction and
discharge pipes.
The torques in the table below must not
be exceeded.
T
M
0
5
0
5
3
0
1111
Suction and discharge ports
Torque
[Nm]
1" 50-60
1 1/4" 50-60
Warning
The electrical connection must be
carried out in accordance with local
regulations.
Before starting work on the pump,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
The pump must be connected to an
external mains switch with a contact
gap of at least 3 mm in all poles.
Discharge port
Suction port
T
M
0
5
0
5
2
9
1111
Caution
MG 71- and MG 80-based motors have
no phase insulation* and must
therefore be protected against voltage
peaks higher than 650 V (peak value)
between the supply terminals.