Temperature/Pressure Conversion Table; Preparation Of Coffee; Coffee Dispensing With Flow Regulator (For Pid Version Only); Pump Adjustment (Rotary Pump Versions Only) - Bezzera ARIA Manual De Instrucciones

6.2.4. Temperature/pressure conversion
table
Warnings:
The machine allows you to choose which unit of
measurement of temperature is displayed:
°C (degrees Centigrade).
°F (degrees Fahrenheit).
To set a value press the key (Fig. 18; pos. A) the
display will show PRG; press the key again (Fig. 18;
pos. A) the display will show UoM; press the key (Fig.
18; pos. C) to change the unit of measurement of
temperature using the keys (Fig. 18; pos. A/C).
°C 80 85
°F
176 185
bar 0.5 0.7

6.3 Preparation of coffee

1) Remove the filter holder (Fig. 01; pos. 5; Fig.
03; pos. 5) from the group
head (Fig. 01; pos. 4; Fig. 03; pos. 4).
2) Fill the filter holder with ground coffee
and press the coffee in, taking care not
to soil the edge of the filter holder.
3) Reattach the filter holder to the group (Fig. 01;
pos. 4; Fig. 03; pos. 4).
4) Place the cup under the coffee dispensing
spout.
5) Raise the coffee dispensing lever (Fig. 01; pos.
3; Fig. 03; pos. 3; Fig. 05) until the desired
amount of coffee is obtained.
6) Lower the coffee dispensing lever (Fig. 01;
pos. 3; Fig. 03; pos. 3; Fig. 05) to stop dis-
pensing.
NOTE: While dispensing coffee, the display
(PID version only) will feature a stopwatch indi-
cating the duration of the dispensing process.
Warnings:
- Do not remove the filter holder when the appli-
ance is in operation; the group head is under
pressure.
- Do not touch the metal part of the filter holder
directly as it is hot.
- The standard doses for the filters are 10 grams
for one dose and 20 grams for two doses.
90 95 100
194 203 212
1.0 1.3 1.7
MOD.
6.4 Coffee dispensing with flow
regulator (for PID version only)
The flow regulator, where present, allows for the
dispensing pressure to be changed (it is always
less than or equal to the set pump pressure.
See paragraph 6.5).
Turn the adjustment knob (Fig. 18):
- Clockwise to decrease the dispensing pressure
- Counter-clockwise to increase the dispensing
pressure
1) Remove the filter holder (Fig. 01; pos. 5; Fig.
03; pos. 5) from the dispensing group (Fig.
01; pos. 4; Fig. 03; pos. 4).
2) Load the filter-holder with ground coffee, press
the coffee taking care not to make the edge of
the filter-holder dirty.
3) Reattach the filter holder to the group (Fig. 01;
pos. 4; Fig. 03; pos. 4).
4) Place the cup under the coffee dispensing
spout.
5) Raise the coffee dispensing lever (Fig. 01; pos.
3; Fig. 03; pos. 3; Fig. 05) until the desired
amount of coffee is obtained.
6) During dispensing, it is possible to turn the flow
regulator knob (Fig. 17)
7) Lower the coffee dispensing lever (Fig. 01; pos.
3; Fig. 03; pos. 3; Fig. 05) to stop dispensing.
6.5 Pump adjustment (rotary pump
versions only)
Once the preferred water supply mode has been
chosen, it is possible to vary the working pressure,
bringing it back to 9 bar (0.9 MPa) calibrated in
the factory, by screwing or unscrewing the adjust-
ment fitting located in the lower part of the ma-
chine (Fig. 08, pos. A).
Do the following:
1) Insert the filter-holder with a blind filter (Fig.
10; pos. 14) into its slot.
2) Raise the coffee dispensing lever to the hori-
zontal position (Fig. 01, Pos. 3 and Fig. 03, Pos.
03), take note of the pressure shown on the pres-
sure gauge (Fig. 13, Pos. B) and turn the coffee
dispensing lever back to the vertical position.
3) Tighten the pump adjustment screw (Fig. 08,
pos. A) to increase the pressure or unscrew to de-
crease it, performing no more than one complete
turn at a time.
Repeat steps 2 and 3 until returning the pressure
37
BEZZERA ARIA-ARIA PID