La Pavoni Diamante DIA2S, Руководство по эксплуатации

Страница: 29 / 72

English
29 28
( U ) : by reducing the pressure, you obtain a temperature reduction,
whereas by increasing the pressure, the water temperature also
increases. The regulation sense is shown in the picture and also on
the pressure switch itself.
Pressure varies by approximately 0.1 atm for each complete turn
of the screw.
Caution! Disconnect power supply before carrying out
this operation.
U
6.2 – PUMP PRESSURE SETTING
Insert in the brewing unit the filter-holder filled with properly
ground, dosed and pressed coffee. Activate the switch or the unit
control keyboard ( 17 ) and read the pressure on the pump mano-
meter ( 12 ).
N.B. The correct pressure is 8/9 bar.
If the pressure displayed by the manometer should not prove cor-
rect, operate the pump pressure regulation screw ( Z ), by turning
it clockwise to increase pump pressure or anticlockwise to reduce
pressure.
Once regulation is complete, check the pump setting by delivering
one or more coffee servings.
Z
Z = Pump pressure regulation screw
Caution! When the machine is new, the filter-holder
may not prove aligned (perpendicular to the machine
itself) as shown in the picture; this however does not
affect proper operation of the machine itself.
After a brief period of use the filter-holder will
gradually settle on the correct position
A
B
A. Position of the closed filter-holder when the machine is new.
B. Position of the closed filter-holder after the machine has been in
use for a brief period.
7 – COFFEE PREPARATION
In order to obtain an excellent Espresso coffee, it is important to use
a top quality coffee blend, properly roasted and ground; grinding
is correct when the coffee delivery time is of 15-18 seconds for one
serving and of 30-35 seconds for two servings. Grinding must take
place at time of use, in that, once ground, coffee loses its fragrance
within a short time; if grinding is too coarse you will obtain light-
coloured and week coffee, without froth; if grinding its too fine you
will obtain dark coloured and strong coffee, with little froth.
Warm cups contribute to maintaining freshly delivered coffee at
the right temperature; it is therefore advisable to place the cups on
the spacious cup-holder grid before use ( 19 ), which will make it
possible to take advantage of the heat emanating from the boiler.
On machines provided with an electric cup-warmer, cups are pre-
heated by pressing the yellow button (1): the button warning light
will switch on to signal that the cup-warmer is on. To switch off the
cup-warmer, pressed the yellow button (1) again.
Caution! Do not place cloths, felt covers or the like on
the cup holder. Once you have placed the filter into the filter-holder
( 22 ), fill the filter with the amount of coffee required for 1 or 2 cups
(7 gr. - 14 gr.), level off, and press the coffee down with the presser,
manually clean the filter edge from any coffee residues and fit the
filter-holder into the brewing unit ( 21 ) moving it rightward until it is
tightly in place.
Place the cups under the spouts and start the brewing by means of
the unit control ( 17 ).
Once you have obtained the desired amount of coffee, stop delive-
ry by means of the unit control ( 17 ), whilst leaving the filter-holder
in place.
To prepare additional cups of coffee, remove the filter-holder ( 22 )
from the unit, by moving it leftward, empty the coffee grounds into
the drawer provided and once again follow the steps listed above.
Caution! We recommend that you do not touch the
brewing units or the steam and hot-water nozzles when
the machine is running, and that you pay the utmost
attention not to place your hands under the units or
nozzles during delivery, to avoid possible scalds.
It is advisable to leave the filter-holders, with their own filters and
coffee grounds, fitted into the unit throughout your days’ work, to
ensure the filter-holder always preserves an optimal temperature.