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4.3 p
ositioning tHe compressor
Once the position in which the compressor is to be installed has been identified ensure that
the compressor is set on a flat surface.
No special foundations or bases are required for the machine.
Lift the compressor using a forklift truck (forks at least 900 mm long) and fit the vibration-dam-
ping feet and block with the nuts under the four resting points where established.
Models on tank are supplied with rubber feet.
Do not secure the compressor rigidly to the floor.
4.4 c
onnecting tHe compressor and relative inspections
c
onnecting tHe compressor to tHe electrical mains power supply
The compressor is to be connected to the electrical mains by the customer, to his
exclusive liability, employing specialised personnel and in compliance with the Accident
Prevention Norms EN 60204.
INSTRUCTIONS FOR CONNECTING TO EARTH
This compressor must be connected to earth while in use in order to safeguard the operator
against electrical shocks.
The electrical connection must be carried out by a skilled engineer. It is advisable never to
dismantle the compressor or even to make any other connections.
All repairs must be carried out exclusively by authorised service centres or other qualified
centres. The earth wire of the power supply cable of the compressor must be connected only
and exclusively to the PE pin of the terminal board of the actual compressor. Before replacing
the plug of the power supply cable ensure that the earth wire is connected.
EXTENSION CABLE
Use only extension cables with plug and earth connection. Never use damaged or squashed extension cables. Ensure that the
extension cable is in a good state of wear. When using an extension cable, ensure that the cross section of the cable is sufficient to
convey the current absorbed by the product to be connected.
If the extension cable is too thin there could be drops in voltage and therefore loss in power and overheating of the equipment.
The extension cable of the three-phase compressors must have a cross section in proportion with its length: see table below:
Valid for max lenght 20 m
HP
kW
230-240 V / 50-60 Hz
5.5
4
7,5
5.5
10
7.5
Avoid all risks of electrical shocks. Never use the compressor with damaged electrical cables or extension cables. Regularly
check the electrical cables.
Never use the compressor in or near water or near a hazardous area where electrical shocks may be encountered
ELECTRICAL CONNECTION
Compressors are supplied without cable and plug. The power supply cable must be fed into the electrical cabinet through the dedi-
cated cable clamps situated on the left side.
The cross section of power supply cable (max. lengths of 4 m, max ambient temperatures 50°C) must be as follows:
Power
Hp / kW
direct start (D.O.L)
5,5 / 4
Star-delta start
5,5 / 4
7,5 / 5,5
10 / 7,5
15 / 11
20 /15
It is advisable to install the connector, magneto thermal switch and fuses near the compressor (max. 3 m away).
380-415 V / 50-60 Hz
4 mm²
2,5 mm²
6 mm²
2,5 mm²
10 mm²
4 mm²
Rated voltage
Magneto thermal switch (A)
20
16
25
25
40
50
4.i
nstallation
HP
kW
15
11
20
15
V 220/240
Fuse(A)
25
20
25
30
40
50
10
230-240 V / 50-60 Hz
16 mm²
25 mm²
Rated voltage
V 380/415
Magneto thermal switch (A)
25
20
32
40
63
80
380-415 V / 50-60 Hz
10 mm²
16 mm²
Fuse(A)
35
25
36
40
80
80
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