Power Supply Connection - Xylem LOWARA ResiBoost MMW Manuel D'installation, D'utilisation Et D'entretien

Precautions
WARNING:
• Make sure that all connections are
performed by qualified installation
technicians and in compliance with
the regulations in force.
• Before starting work on the unit,
make sure that the unit and the con-
trol panel are isolated from the power
supply and cannot be energized.
NOTICE:
According to the installation, for the Resiboost with
A1 class (EMC), the installer will have to assess
whether additional measures are necessary to miti-
gate possible radio interference.
Grounding (earthing)
Electrical Hazard:
• Always connect the external protec-
tion conductor to ground (earth) ter-
minal before making other electrical
connections.

4.4.1 Power supply connection

WARNING:
Always turn off the power supply and
wait a minimum of 2 minutes before
making any connections.
The converter comes with a mains power cable and
a motor power cable. Some models have a power
supply cable with mains plug. See
271. Install the pump making sure that the plug and
socket can be easy to access for deactivating the
converter + pump system.
If the power cable of the motor needs to be re-
placed, fit a new one of a cross-section suited to the
maximum current consumption of the electric motor
and taking into account also the maximum voltage
drop (≤4%). Refer to Table 17
ble 19 on page 261 for the minimum characteristics
of the H07RNF cables in relation to the model of the
converter and the length of the cable. Maximum
2
cross-section 4mm analyzed.
Install or replace the power cables
For models MMW and
MTW, see Figure 10 on
page 253, Figure 11 on
page 254, and Figure 12
on page 255.
Table 31 on page
on page 259 and Ta-
1. Depending on the
model, unscrew the
screws and open the
REAR (4 screws) or
FRONT cover (6
screws).
2. Insert the power ca-
bles in the relative
cable glands. Figure
11 on page 254
3. First connect the
ground cable to the
relative terminal and
then the other ca-
bles. It is good prac-
tice for the ground
cable to be longer
For models MMA and
MTA, see Figure 10 on
page 253, Figure 13 on
page 256, and
Figure 14
on page 257.
WARNING:
• The power cable of the motor must
NEVER be laid parallel to the power
cable of the converter, see
on page 253.
• Models MTW and MTA: although the
converter has a single-phase power
supply, the pump motor always has a
three-phase power supply at 230 V.
The missing phases are created by
the converter. For additional informa-
tion, see Figure 11
ure 13 on page 256, and
on page 257.
4.4.2 I/O connections
For models MMW and
MTW, see Figure 10 on
page 253 and Figure 12
on page 255.
en - Original instructions
than the other ca-
bles, Figure 11 on
page 254, and Figure
on page 255
12
4. Check that all the ca-
bles are secured,
close the REAR cov-
er and fasten the
screws.
1. Unfasten the 8
screws and open the
FRONT cover mak-
ing sure not to dam-
age the connecting
cable of the display
and the connector.
Figure 15 on page
258
2. Insert the power ca-
bles in the relative
cable glands. Figure
13 on page 256, and
Figure 14 on page
257.
3. First connect the
ground cable to the
relative terminal and
then the other ca-
bles. It is good prac-
tice for the ground
cable to be longer
than the other ca-
bles.
4. Check that all the ca-
bles are secured, in-
cluding the connect-
ing cable of the dis-
play, and close the
FRONT cover and
fasten the screws.
Figure 9
on page 254, Fig-
Figure 14
1. Unfasten the 6
screws and open the
FRONT cover.
2. If required, connect
the cable of the level
sensor to the digital
input to prevent dry
running of the pump.
The electrical con-
31