Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
en - Original instructions
• Make sure there is a minimum distance of 3 mm
between the diameter of the pump and the inter-
nal diameter of the well.
• During operation, make sure that the water circu-
lation speed around the motor is at least 8 cm/
sec.
• Make sure that the minimum dynamic level of the
water in the well is at least 1 m above the pump's
delivery flange.
4.4 Electrical installation
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.
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
264). 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
19
(page 254) for the minimum characteristics of the
H07RNF cables in relation to the model of the con-
verter and the length of the cable. Maximum cross-
2
section 4mm
analyzed.
Install or replace the power
cables
For models MMW and
MTW, see
Figure 10
(page 246),
Figure 11
(page 247), and
Figure
12
(page 248).
30
Table 31
(page
(page 252) and
Table
1. Unfasten the 4
screws and open the
REAR cover.
2. Insert the power ca-
bles in the relative
cable glands.
Figure
11
(page 247)
3. First connect the
ground cable to the
For models MMA and
MTA, see
Figure 10
(page
246),
Figure 13
(page
249), and
Figure 14
(page 250).
WARNING:
• The power cable of the motor must
NEVER be laid parallel to the power
cable of the converter, see
(page 246).
• 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
13
(page 249), and
250).
4.4.2 I/O connections
For models MMW and
MTW, see
Figure 10
(page 246) and
Figure 12
(page 248).
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,
Figure 11
(page
247), and
Figure 12
(page 248)
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
(page 251)
2. Insert the power ca-
bles in the relative
cable glands.
Figure
13
(page 249), and
Figure 14
(page 250).
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
(page 247),
Figure
Figure 14
(page
1. Unfasten the 6
screws and open the
FRONT cover.
2. If required, connect
the cable of the level
sensor to the digital
Publicité
Table des Matières
