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1.3 Electric connection
As prescribed, the electrical system must have an efcient earth
system, as required by the regulations in force. The electrical safety of
the appliance can only be ensured when the electrical system is conform.
Before making the electrical connection, check the mains voltage
and frequency to ensure that they conform to the requirements of the
appliance, as indicated in its data plate.
For direct connection to the mains, you should place between the
appliance and the network a device, sized according to the load, which
ensures disconnection. Its contacts should have a minimum opening
distance that enables complete disconnection under the conditions of
overvoltage category III, according to installation rules; this device
should also be located so that it can be easily used by the operator at
any time.
Turn the master selector, to which the power supply plug will be
connected, to position 0 (zero). Have the socket cable section checked
by qualied staff to make sure it suits the power absorbed by the device.
The machine is usually supplied with a connected electric power supply
cable. In the case of particular machine congurations, this is not
mounted, the cable must be at least type H05 RN F and have suitable
section for the appliance (see tab. I).
The connection terminal board is in the power supply box, inside the
casing, in the front rear part.
Pass the cable through the cable gland, connect the wires to the
corresponding terminal of the terminal board and x them.
The earth wire must be longer than the others so that, if the
cable holder breaks, the earth cable detaches after the voltage
cables.
The supply voltage of the appliance in operation must not
deviate from the nominal voltage by ±10%.
1.4 Equipotential
The appliance must be included within an equipotential
system whose efciency is checked in compliance with the
standards in force.
For connection there is a clamp, located on the frame and
marked with the symbol of Fig. 3.
Fig.3
