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ENGLISH<br />
ADJUISTMENTS TO BE MADE BY QUALIFIED TECHNICIANS<br />
Having followed all the above safety precautions<br />
and after having provided for the installation and<br />
connection of the electric and plumbing systems<br />
the Qualified Technician can proceed with the initial<br />
adjustment.<br />
Inside the machine (behind the coffee grounds<br />
drawer, see Fig. 1) a double-scaled pressure<br />
gauge can be found (fig. 6), which measures the<br />
coffee boiler pressure (scale 0-2,5 Bar) and the<br />
volumetric pump pressure (scale 0-15 Bar).<br />
38<br />
Pressure gauge (fig. 6)<br />
Pressostat adjustment<br />
Service boiler<br />
To increase or decrease the pressure of the service<br />
boiler water-steam mixture (thus regulating the<br />
corresponding temperature), the qualified technician<br />
must:<br />
- remove the upper cover dish<br />
- turn the registration screw (fig. 8), turning it<br />
clockwise to decrease and counter clockwise<br />
to increase.<br />
The correct value is between 0,8 bar and 1,4 bar.<br />
Pressostat (fig.8)<br />
Grinding adjustment<br />
- Turn the machine off by switching off the<br />
SPINA button (main switch); the following operation<br />
must be carried out with dry hands.<br />
- By opening the control panel, the grinding adjustment<br />
ring nut can be located (Fig. 8).<br />
Following the direction indicated by the arrow,<br />
the coffee grinding texture can be regulated to<br />
a finer texture (clockwise) or to a coarser texture<br />
(counter clockwise).<br />
Close the panel.<br />
Pump adjustment<br />
To adjust the pump the qualified technician must:<br />
- open the coffee grounds drawer<br />
- loosen the blockage bolt<br />
- turn the registration screw<br />
- turn clockwise to increase<br />
- turn counter clockwise to decrease, correct<br />
value is 7-9 bar<br />
- secure the safety bolt<br />
(fig. 9)<br />
pump (fig.9)