Publicidad
Idiomas disponibles
Idiomas disponibles
caused by vibrations during operation, to prevent people from tripping over
hoses or the power cable. Make the connections without damaging the
pump.
Never hang or fix the pump using the power cable.
- Fill the pump body with liquid to be pumped through one of the ports,
preventing the liquid from leaking out either through this port or the other
port; as the pump is self-priming, this operation is only necessary the first
time, or if the pump has been emptied; in fact, when it stops sufficient
liquid remains inside for subsequent priming.
Traces of lubricant (cutting fluids, greases) may be present on the inner
walls of the pumping body. If these substances can pollute the liquid to be
pumped (i.e. food substances), initial pumping must be performed
following the cleansing procedure described in Chapter 4.3.
Do not operate the pump dry.
4.2.2 – ASSEMBLING THE HOSES
- As shown in Fig. 5 or Fig. 6, screw the hose fittings to the ports; these
are provided standard with brass pumps, on request (in nylon or stainless
steel) for series AL pumps, after checking that the gaskets are present in
the fittings; the assembly shown is only indicative, the two fittings, straight
and curved, can be inverted.
- Provide a pair of hoses of suitable length and with the same internal
diameter as the external diameter of the fittings. The hose must be flexible
spiral, made of a material suitable for the type and temperature of the
liquid to be pumped, resistant to the internal vacuum and with a higher
operating pressure than the pressure generated by the pump (equal to
Hmax in Table A).
Insert the ends of the hoses into the hose fittings; secure the connection
using a hose clamp. It is not necessary to install a check valve; if the
liquid can contain hard suspended particles install a suitable filter in the
suction hose to retain them; the hose must not exert excessive forces on
the pump. Avoid excessive bending of the hoses to avoid kinks.
Insert the free end of the suction hose into the receptacle from which liquid
is to be drawn, at a depth at least twice the diameter of the hose and at the
same minimum distance from the bottom. Insert the free end of the
discharge hose into the receptacle to receive the liquid.
The discharge hose must be fixed, without compressing it,
to prevent extraction from the collection receptacle during
start-up or operation, which would wet and contaminate the
surrounding environment. In the event of use with dangerous
liquids, wear personal protective equipment selected according to
the specifications of the liquid, to prevent danger of contamination
or contact with exposed body parts.
4.2.3 – ELECTRICAL CONNECTION – GENERAL INSTRUCTIONS
The inverter box (ref. 20) and the terminal box (ref. 21)
contain electrical parts; they must be disassembled
exclusively by a qualified technician, in compliance with
safety regulations.
Before making the electrical connections, check cables, plugs and sockets
for damage. Electrical connections must be protected against dampness
and sprays of liquid. Only use cables and components in conformity with
the safety provisions of Directive 2006/95/EC and suitable for the
current absorbed by the motor.
Pumps with three-phase and direct current motors are not provided with
overload protection; pumps with single-phase motors are provided with an
internal overload protection device and automatic reset only if the words
"Protetta da sovraccarico - Overload protected" appear on the yellow label
affixed to the pump.
4.2.3.1 – CONNECTION OF SINGLE-PHASE AND THREE-PHASE PUMPS
Required specifications of the power supply
network
voltage and frequency coinciding with those indicated on the pump
•
ratings plate (tolerances: 10% on voltage and 2% on frequency);
provided with an efficient earthing system and equipped with a high
•
sensitivity differential switch (30 mA) installed in line;
protected against overcurrents
•
(if the pump is not already equipped with this) equipped with overload
•
protection system calibrated to the current (A) indicated on the pump
ratings plate;
(for models with cable without plug and models with terminal block)
•
equipped with a power isolation device.
Models with switch, cable and plug
select a power socket compatible with the plug, equipped with earthing
•
device, away from possible sprays of liquid and in an accessible
position.
Make sure the switch is positioned to off (0).
•
Arrange the cable so that it cannot be knocked or tripped over.
•
Insert the plug into the power socket.
•
If an extension cable is required, it must be selected according to the
•
current regulations and the data indicated on the pump ratings plate; the
electrical connection must be protected against possible sprays of liquid.
Models with switch and cable, without plug
Connection to the power supply network must be performed
exclusively by qualified technicians, in compliance with the
regulations regarding electrical installations and with all the safety
rules applicable to the type of operation.
The power supply must be disconnected before making the
connection. First connect the earth conductor, followed by the line
conductors.
Models with terminal block
Connection to the power supply network must be performed
exclusively by qualified technicians, in compliance with the
regulations regarding electrical installations and with all the safety
rules applicable to the type of operation. The power supply must be
disconnected before making the connection. The power cable must be
provided with earth conductor. Connection of the cable to the partly
completed machinery is described below with reference to Fig. 9.
Remove the cover of the terminal box (ref. 21) after having
•
unscrewed the fixing screws.
Insert the power cable through the ring nut (ref. 27), the conical
•
gasket (ref. 28), the threaded sleeve (ref. 29) of the terminal box
and clamp the ring nut.
Connect the earth conductor to the motor casing at the stud ref. 23
•
identified by the symbol
Connect the power conductors to the terminal block (ref. 22)
•
following the instructions indicated in the label inside the cover of
the terminal box.
Use the cable clamping bracket ref. 24 to fix the power cable, the
•
right way up or overturned depending on the diameter of the cable;
check that it is secured effectively against pulling and twisting of
the cable.
Replace the cover of the terminal box and fasten it using the
•
screws removed previously.
4.2.3.2– CONNECTION OF DIRECT CURRENT PUMPS
Required specifications of the power supply network
voltage coinciding with that indicated on the ratings plate of the partly
•
completed machinery (tolerances +5% - 10%);
protected against overcurrents;
•
equipped with overload protection system;
•
equipped with a power isolation device.
•
the partly completed machinery is designed to be supplied by a battery;
•
if another type of generator is used, assess the risk of dangerous
voltages being present on accessible metal parts of the partly
completed machinery; in particular, bear in mind that the negative pole
of the terminal block supplying the partly completed machinery is
connected to the casing of its motor.
Connection instructions
Remove the terminal box (ref. 21), after having unscrewed its fixing
•
screws.
Insert the power cable through the cable grommet.
•
Connect it to the terminal block complying with the polarity (+, -)
•
indicated.
If it is necessary to secure the cable against pulling or twisting, take
•
the necessary measures.
Replace the terminal box and fasten it using the screws removed
•
previously.
40
, using the bolts provided.
Publicidad
