English9fig. 95.3 First switching on- Fill the coffee hopper (ref. 7, fig. 1) with the selected coffeebean blend.ImportantMake sure that the coffee beans don’t contain foreign bodies(pebbles, metallic elements or whatever) which could dam-age the grinders.- Make sure that the all machine’s removable components (ref.15 and 17, fig. 1) are in place and that the front door isclosed (ref. 13, fig. 1).On the contrary, when the machine switches on, the display(ref. 8a, fig. 1) will show which of the components is at fault.- Connect the machine to the mains (either by setting the all-poleswitch to “I” or by plugging).- Switch machine on by way of the main switch (ref. 10, fig. 1);The display will show message “HEATING WAIT”.- When the display shows “READY FOR USE”, it will benecessary to:- Position the dispenser (ref. 23 and 24, fig. 1) so as toobtain a height suitable for the containers in use (see “4.3Coffee dispenser unit”).- Position one or two containers under the dispenser.- Press the key corresponding to the type of drink selected.ImportantEven though initially all keya are programmed with standardvalues, it is necessary to check that the drink dispensed corre-sponds with the desired characteristics. If this is not the case,set again the dispensing keys (see “6.11 Programming ofdispensing keys”).5.4 Serial port connectionDangerOperation falling within the competence of the Maintenancetechnician.Beside the “nation key” connector the RS 232 serial port (ref. C,fig. 9) is found.Through this serial port it is possible to connect the machine to thedevices and equipment deployed by the AUTHORISED SERVICECENTRES for tests and programming operations.CABImportantIt strongly suggested that the machine be supplied with watertreated through a descaling device, especially in cases of waterwith a high content of calcium and magnesium salts (hardwater).5.2 Insertion of Nation keyDangerOperation falling within the competence of the Maintenancetechnician.The “nation key” contains the following data:- Language shown on display.- Setting of software according to the Country where the ma-chine is utilised.ImportantThe machine WILL NOT operate without the “nation key”, soit is important to see to this operation.The machine will only accept a single insertion of the “nationkey”.To insert the nation key it is necessary that the following operationsbe performed:- Disconnect electrical power.- Dismantle the left-hand side panel (ref. 1, fig. 1) and the glass(ref. 2, fig. 1).- Insert the key (ref. A, fig. 9) into the connector (ref. B, fig. 9) ofthe electronic board.- Re-assemble the glass and the side panel.