Filling Boiler Manually; Pressure Switch - Nuova Simonelli Aurelia II 2 GR S Libro De Instrucciones Para El Usuario

5. ADJUSTMENTS TO BE MADE BY A QUALIFIED TECHNICIAN ONLY
5.1 FILLING BOILER
MANUALLY
NOTE: this operation must be carried out with
the machine turned off.
All models are equipped with a level
gauge to keep the water level inside the boiler
constant. When using the machine for the first
time, it is advisable to fill the boiler by hand to
avoid damaging the electrical resistor and turn-
ing on the electronic protection.
If this should happen, just turn the machine off
and then start it up again to complete its loading
procedure (see chapter
FUNCTIONS MESSAGE – LEVEL ERROR").
To fill the boiler manually for the first time, pro-
ceed as follows:
remove the worktop grid;
turn the manual "A" level tap so that water
will enter the boiler;
once the maximum level has been reached,
as indicated by the optical level, turn tap "A"
off;
A
MAX
MIN
switch the machine on by placing the gen-
eral switch on "I"; this will activate the level
gauge which will automatically maintain the
water level inside the boiler.
54
5.2

PRESSURE SWITCH

(version S and V) /
PUMP (version S, V,
Digit and T3)
ADJUSTMENT
NOTE: this operation can be carried out while
the machine is turned on.
To adjust the service pressure of the boiler,
thus regulating the water temperature, accord-
ing to the various functions and needs of the
coffee desired, proceed as follows:
remove the worktop grid cover;
remove the plastic protection, unscrewing
"MACHINE
the two side screws (A), as shown in the
following figure;
A
use the pressure switch adjustment screw
to INCREASE (anticlockwise) or REDUCE
(clockwise) the pressure;
Fig. 13
Advisable pressure: 1 - 1,4 bar
(according to the kind of coffee).
Pressure can be adjusted directly from the pro-
gramming function on the Digit and T3 versions.
To adjust pump pressure, use the adjustment
dial of the pump to INCREASE (clockwise) or
REDUCE (anticlockwise) the pressure;
Advisable pressure:
The set pump pressure is shown on the
lower part of the gauge.
T3 and Digit versions
Fig. 14
S and V versions
Fig. 15
Fig. 16
9 bar.
MAX
MIN
Fig. 17
MAX
MIN
Fig. 18