10
force.
Supply voltage, current and cos φ are quoted on the
motor plate that has to be kept within the electrical panel.
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The motor must be earthed and connected to
the electric panel.
4.2 Verification of Rotation Direction
When the pump has been connected to the power supply,
establish the current direction of rotation as follows:
1. Start the pump and control the head provided with
gate valve not fully closed.
2. Stop the pump and interchange two of the phase
connections.
3. Start the pump and repeat step 1. with the gate valve
in the same position.
4. Stop the pump.
Compare the results obtained after performing steps 1
and 3. The correct connection is the one that gives the
highest head.
Note:
The pump must not be started until the suction
support has been completely submerged.
5 . PUMP INSTALLATION
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Before starting any work on the pump or on the
motor, make sure that the power supply has
been disabled and that it cannot be accidentally
switched on.
5 .1 Assembling of the pump with the motor
Place the pump on the motor in order that they are
positioned along the same axis and insert the motor shaft
in the pump shaft joint: the coupling must not be forced.
Tighten the screws or the nuts that diagonally fix the
pump-motor flanges with a driving torque as quoted in
the following table.
Motor type
Screw
Driving torque
Nm
Motor 4"
M8
18
Motor 6"
M12
100
Motor 8"
M16
200
5 .2 Delivery piping
If the pump is already coupled to the delivery piping and
you use a chain pipe wrench, tighten the pump, holding it
only by the delivery opening.
The threaded pipes must be connected in such a way as
to support the unscrewing action due to the starting and
stopping of the pump.
The thread of the pipe, which has to be screwed into the
pump, should not be longer than the thread of the pump.
After screwing the pipe into the delivery opening, tighten
the screw assembled to avoid the loosening of the first
section of the pipe, see Fig. 3.
When plastic pipes are used, the pump should be
secured by an unloaded rope to be fastened to the
delivery opening, see Fig. 3.
001
14016 09/2008
001
14016 06/2010
Fig. 3
5.3 Cable fitting
Use cable clips every 3 meters to fix the cable to the
support rope or to the delivery pipe.
Use plastic cable clips as shown in Fig. 4.
Once the cable has been fastened, cut off the remaining
part of the clip.
3mt
3mt
001
14019 09/2008
001
14019 06/2010
Fig. 4
In the case that the tube is plastic, it must leave the
electric cable and the cable support not in tension to
prevent the elongation of the tube, due to the weight of
the water contained in it, tearing the electric cable.
11
When flanged pipes are used, the cable clips must be
positioned before and after each flange.
5 .4 Lowering of the pump
Verify that the well is not clogged along its total length.
Lower the pump into the well, paying attention not to
damage the electric cable.
Note:
Do not lower the pump by means of the electric
cable.
5 .5 Installation depth
The dynamic water level must always be above the
suction support of the pump, see paragraph
3.1
Positioning Limits
and Fig. 5.
The minimum safety margin shall be 1 meter.
Lt
Lc
Ld
La
Lb
Lt
Lc
Ld
La
Lb
001
14015 09/2008
001
14015 06/2010
Fig. 5
La:
Minimum installation depth
(suggested: minimum 1 mt).
Lb:
Static water level
Lc:
Dynamic water level
Ld:
Difference between static and dynamic level
Lt:
Installation depth
Block the delivery pipe with proper hangers on the well
head.
Loosen the support rope and fix it to the groundwork.
6 . START-UP
When the pump has been installed and submerged, it can
be started with the gate valve closed to 1/3.
Check the direction of rotation as described in section
4.2
Verification of Rotation Direction
.
If there are impurities in the water, the gate valve should
be opened gradually until the water becomes clearer. The
pump should not be stopped until the water is completely
clean again, since otherwise the pump parts and the non-
return valve may be damaged.
If the pump flow rate is higher than that of the well,
the use of a protection device against dry operation is
recommended.
Without any protection against dry operation, the water
level falls under the suction support and the pump sucks
air. In the long term, this causes damages due to poor
cooling and lubrication.
7 . MAINTENANCE AND SERVICE
The pumps are maintenance-free.
All pumps are easy to service.
Use the Service Kits and the special tools for maintenance.
The Service Manual is available upon request.
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Before performing any operation on the pump
or on the motor, verify that the power supply
is disabled and that it cannot accidentally be
enabled again.
8 . DISPOSAL
This product or parts of it must be disposed using the
local public or private waste collection service.
