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• 3 - HORIZONTAL INSTALLATION IN SHROUD FOR
PRESSURE INCREASE -
In this case, when the electropump is supplied by the manufacturer, it is
already assembled with the shroud; it is a seal pipe with, at its ends, 2
bolted flanges for the connection to the pipelines.
The pump is fixed to the inner part of the flange trough the bolts; the motor
has to stand in suspension and is radially secured by 3 adjustable nuts at
120°C.
The shroud is equipped with 2 welded 4-hole-supports to be fastened to the
concrete floor through Fischer GM type anchors, or equivalents, suitable
for the hole of the shroud support (if hole has Ø 18, then use M12 anchors).
The set handling has always to be carried out by lifting equipment having a
suitable capacity for the set itself (see weights on the cases).
If the pump has large dimensions and has to be installed near residential
property, you are advised to insulate the pump from the pipeline by means
of pieces of antivibration pipes on the suction and on the delivery of the
pump (provided by the installation's manufacturer).
Proceed with cable connection outgoing from the pump and with electrical
system finishing.
• DELIVERY AND SUCTION PIPES
ATTENTION! Always ensure that the pipes can withstand the maximum
working pressure of the pump (see rating plate). DANGER OF EXPLOSION!
Pipes must be completely sealed and sized according to the usage conditions.
Use wide curves in order to avoid sudden head losses.
• ELECTRICAL SYSTEM
Motor connection and its related electrical system has to be executed by a
skilled and qualified personnel in accordance with the electrical normes in
force.
The power supply cable must be sized according to the input of the motor
and to the length of the cable itself ( please refer to the tables in our technical
catalogues ).
The connection between the motor cable and the power supply cable must
be performed according to the instructions described in Figure 16 - 17 .
ATTENTION!
Connect the earth cable
ELECTRIC SHOCK HAZARD !
ATTENTION!
ATTENTION! The motor must always be protected against overloads
through a set thermic relay according to the current of the motor rating
plate.
• STARTERS FOR ELECTRIC MOTOR
In case the starters are not supplied by the manufacturer, it advisable to use
suitable equipments.
Direct starters are advised up to a 7,5 Kw. power; for higher powers we
recommend to use impedance, resistence, either with autotransformer or
star-delta starters.
In any case the electric installator has to comply with the normes of the
country where they are installed and with the characteristics of feeder mains.
In any case the motors must be protected against:
– Overload
– Lack of phase
– Voltage drop
ATTENTION! The personnel is obliged and responsible to carry out
final tests in accordance with the regulations, tests for input and insulating
grade of the motor with its respective installation. He must then draw
up Declaration of Conformity concerning the electric system.
Figure 15
12
14
INSTALLATION
«
« « «
3
1) Submersible pump
2) Non return valve
4) Supports
5) Panel
ELECTRICAL CONNECTION TABLE OF THE THREE-
PHASE MOTORS FOR
/
CONNECTION
– For rated voltage at 230 V. with
motor of 230/400 V.
– For rated voltage at 400 V. with
motor of 400/660 V.
R
S
T
U V W
X Y Z
U
V
W
U
V
W
1
1
1
2
2
2
U
V
W
U
V
W
1
1
1
2
2
2
U V W
X Y Z
CONNECTION
– For rated voltage at 400 V. with
motor of 230/400.
R
S
T
U
V
W
U
V
W
1
1
1
Connect them
and insulate
through the
junction outfit
U
V
W
U
1
1
1
2
U
V
W
Z
ELECTRICAL CONNECTION TABLE OF THE SINGLE-PHASE
BROWN
B L A C K
B L U E
Fig.15
OFF
ON
5
1
« « «
2
3
4
3) Sluice gate
6) Submersible pump-
motor set.
/
STARTING
CONNECTION
– For rated voltage at 230 V.with
motor of 230/400 V.
– For rated voltage at 400 V.with
motor of 400/660 V.
R
S
T
U
V
W
U
V
W
1
1
1
U
V
V
W
W
U
1
2
1
2
1
2
U
Z
V
X
W
Y
U
V
W
U
V
W
1
1
1
2
2
Current initialling
U V W X Y Z
Previous initialling
V
W
2
2
X
Y
MOTORS
R
230V
50 Hz
T
Fig.16
4
2
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