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In the event that the cable should
accidentally
terminal must be the last one to be
disconnected.
The command and control equipment
cannot be installed inside the sump pit.
Remember that the initial input current for direct starting may be
up to 6 times the rated absorption; therefore, make sure that the
fuses or the automatic switches have the adequate setting.
Warning
- Any splicing of the supply cable must
be absolutely water proof.
- Make sure that the mains voltage and
frequency correspond with the pump
rating.
- The supply voltage must agree with the
specifications indicated on the rating
plate, with a 10% tolerance.
- Always check the current absorbed by
the pump.
- Make sure that the setting of the
temperature relay does not exceed the
indicated value at page 4.
ELECTRIC MOTOR
Motor asynchronous squirrel cage type, insulation class H
(180°C). Dry motor, cooled by surrounding liquid. Protection
degree IP 68.
The motor is designed for continuous or intermittent operation,
with a maximum of 15 starts per hour at regular intervals.
The motor is designed for work with 5% maximum voltage
unbalance between the phases (in compliance with norms CEI
EN 60034-1).
DIRECTION OF ROTATION
The direction of rotation must be carefully checked when the
pumps are started.
Warning
If the direction of rotation is wrong the
delivery of the pump is inadequate and
may result in damage to the unit.
The direction of rotation is correct if, at starting, you notice an
counter-clockwise recoil when looking at the pump from the
cable gland side.
Three-phase: if the direction of rotation is wrong you need to
invert any 2 of the 3 phase wires on the terminal board of the
electrical box.
Danger
DO NOT USE THE ELECTRIC CABLE
TO LIFT THE PUMP
Risk of electric
shock
Take good care of the supply cable; replace it immediately if
damaged.
Warning
WARNING! The end of the cable must
not be submerged. The cable terminals
must be securely fastened above the
maximum level of the liquid, to prevent
the water from penetrating inside the
motor through the cable.
ELECTRICAL PANEL*
Danger
Do not connect the pump directly by
means a plug; connect the electric cable
Risk of electric
shock
to
a
protection.
This series of submersible pumps must be equipped with an
electrical control panel. The panel must be designed to allow both
manual and automatic operation.
It should be equipped with at least a low voltage control circuit,
an automatic level control and adjustment circuit, a circuit for
detecting any operating anomalies.
The complete control panel can be supplied upon request.
* not applicable for electric pumps equipped of plug.
AUTOMATIC CONTROL
The automatic pump control is obtained by means of two
automatic level regulators which utilize a single-contact switch
(only on or off).
come
loose,
the
earth
control
box
with
thermal
en
« Translation of the original instructions »
They are installed inside the sump fastened to the bracket which
is secured to the edge of the sump cover.
An automatic alternating system must be provided for in case
more than one pump is installed in a single sump.
The intervention levels are adjusted by loosening the clamps of
the fastening bracket and by lifting or lowering the supply cable.
The pump activation regulator must be positioned at a lower level
than the liquid supply pipe.
The shut-off regulator must be positioned so as to prevent the
pump from sucking air.
An alarm system (flashing or siren) can be connected by means
of another regulator (positioned approx. 10 cm. above the pump
activation level).
Warning
The difference in level between the pump
activation and shutdown must allow for a
maximum of 15 starts per hour.
To ensure proper operation the regulators must float freely, be
positioned away from the walls or any other obstruction; they
must not come into contact with the bottom of the sump or be
directly in the path of the liquid supply stream.
The level regulators must also be periodically inspected to
eliminate any caking due to greasy substances or filaments which
may impede normal operations.
WATER INFILTRATION DETECTOR
For pump equipped with a built-in device that detects water
infiltration in the oil chamber.
The sensor reveals the presence of water in the oil when it
exceeds 30%. If the sensor is activated the oil should be changed.
In the event that the sensor is activated again after a short time
since the oil was changed, we recommend the replacement of the
mechanical seal (see oil change).
AUTOMATIC
DESCENT GUIDING TUBES
The automatic coupling system allows for quick and efficient
inspection operations.
The coupling foot is fastened to the bottom of the sump together
with the delivery pipe; two guiding tubes connect it to the
anchoring bracket secured to the edge of the sump cover.
The pump is lowered along the guiding tubes until it reaches the
exact coupling position; the seal will be tight thanks to the weight
of the pump.
This operation can be repeated any number of times and it makes
checking and inspection operations easier; the pump is simply
extracted from the sump by means of a chain (even if the system
is flooded), checked or repaired and reassembled.
ASSEMBLY
1.
Secure the upper bracket of the guiding tube to the
center of the inner wall below the sump cover, on the
side where the delivery pipe must be installed.
With the help of a plumb line make sure that the
guiding tubes is vertical.
2.
Position the coupling foot at the bottom of the sump in
such a way that the tapered projection on which the
guiding tube will fit is plumb and in line with the upper
bracket.
Mark the fastening holes for the expansion bolts,
remove the foot and drill 4 holes, insert the bolts and
rest the foot on them.
Position the guiding tubes on the special tapered
projection on the foot and determine its final length.
3.
For wells that are more than 6 m deep, intermediate
brackets are necessary for the joining of the guiding
tubes.
4.
Position the guiding tubes between the tapered
projection of the foot and that of the upper bracket;
again make sure that the tube is perfectly vertical.
5.
Fasten the coupling foot using plain washers and nuts;
insert the upper bracket inside the guiding tubes
making sure that there is no verticals lack and fasten it.
6.
Connect the delivery pipe to the coupling foot using a
plain gasket and screws.
9
COUPLING
WITH
TWO
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