Grasselli NAB M, Technical Manual

Page: 24 / 92

NAB M
2.5. ELECTRICAL CONNECTION
The electric wiring and connections above the machine must be to the
local and national electrical standards.
1) The machine must be connected to the electric mains only if the voltage given on the rating
plate ( on the right side of the machine it the low right corner ) corresponds to that of the
electric mains.
2) The machine must be
connected to earth
correctly by means of the
yellow-green lead.
3) Check that the infeed belt turns towards to the into the machine otherwise reverse the polarity .
4) It is compulsory to have the connection made by skilled personnel.
If the above mentioned points are not observed, the manufacturer shall not be held responsible for
damage caused to persons or things.
The standard motor fitted may be used for voltages included between 220
volts and 460 volts indistinctly at 50 Hz or 60 Hz.
If the machine is connected at different voltages to the one indicated on
the rating plate, it is necessary to replace the transformer, motor cut-out
thermal relay.
For voltages outside the range 220-460 volts, in addition to the transformer
and the thermal relay, replace the motor as well.
2.6. PNEUMATIC CONNECTION
see Pict. 2.7.1
Connect the machine air inlet ( 20 ) to the pneumatic network by means of the 1/4 GAS fast union.
Supply pressure must be between 6 and 10 Bar.
The air supplied must be free from humidity, otherwise it is advisable to insert a check filter.
If there is a manual condensation drainage filter, it is advisable to drain it off every time the level
reaches 3/4 of the capacity of the container.
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