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Idiomas disponibles
Idiomas disponibles
5.0
DESCRIPTION OF OPERATION
Foreseen use
The automatic distributor is exclusively for the dispensing of drinks, pre-
pared mixing food substances with water (by infusion as far as concerns
espresso coffee).
For this purpose use products declared as suitable by the manufacturer for
automatic distribution in open containers. The drinks are made in specific
plastic cups automatically dispensed by the machine. Where foreseen, also
the spoon for mixing the sugar is dispensed.
The drinks must be consumed immediately and in no case are to be kept for
subsequent consumption.
Basic operation concepts
During the normal functioning the distributor remains in standby status.
Introducing the necessary amount, according to the set price, and after
pressing the key relative to the desired drink, the drink dispensing cycle is
activated and can be divided different processes:
CUP DISTRIBUTION
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the cup translation device shifts from idle/dispensing position to the "cup
dispenser" station (Fig. 5.1)
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the motor inside the cup dispenser moves the volutes which separates
the cup making it fall into the special holder fork (Fig. 5.2).
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the cup translation device shifts again to collect the sugar
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the cup translation device then moves to return to idle position.
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The presence of the cup is detected by a sensor that enables the dispensing
operations.
SUGAR DISPENSER
Where set and requested , an amount of sugar in the preset maximum dose
is dispensed with the possibility of stopping the latter at the desired dose.
The sugar is dispensed directly in the cup in the E versions whereas for the
I versions it is pre-mixed with the instant drinks.
The dispensing procedure occurs according to the following phases:
1. the geared motor activates the helicoidal screw conveyor of the sugar
product container, dispensing the desired quantity into the product chutes
(Fig. 5.3).
2. The electromagnet is engaged which will empty the sugar from the flange
into the chute which will deliver it to the cup (Fig. 5.4).
ESPRESSO COFFEE
This process functions only the models equipped with the coffee espresso
group (brass or plastic), after the cup and sugar dispensing processes have
been effected.
– the grinder is activated until it reaches the dose of ground coffee set by
the doser (Fig.5.5)
– the doser electromagnet is activated , causing the opening of the door
and consequent fall of the coffee into the brew chamber
– the rotation group geared motor brings it into the dispensing position and
simultaneously compresses the ground coffee (Fig.5.6 - Fig.5.7).
– the pump that dispenses the quantity of programmed water and that is
controlled by a specific electronic device, (volume meter), extracting the
water from the coffee boiler(Fig.5.8).
– the coffee group geared motor is activated again so as to bring again
into standby position ; during this movement the used coffee grounds
are expelled
The sequence of these operations (grinding and coffee dispensing) could
occur in inverse order according to the type of programme used.
SPOON DISPENSING
This process is activated only in the versions where the spoon dispenser is
foreseen; In these versions it is possible to select the spoon in the selections
without sugar and/ or in the instant selections.
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the geared motor that operates the spoon release device is activated
making the spoon fall into the cup. (Fig.5.9).
INSTANT DRINKS
This process is activated when the cup and spoon dispensing processes (when
requested) have been completed.
According to the type drink requested and to the distributor model, several
of the various processes described here below can be activated.
– If present, the whipper motor is activated (Fig.5.10).
– The solenoid valve fixed to the coffee boiler (fig.5.11) or on the soup
boiler (fig. 5.12), is engaged in order to deliver the required quantity of
water into the mixer;
– the pump that delivers the required amount of water is activated; and
controlled by a special electronic device (volumetric counter), which
withdraws from the coffee boiler (Fig. 5.8)
– The instant product geared motor activates the helicoidal screw conveyor
so as to dispense the quantity of product programmed into the mixer (in
some versions more than one product can be conveyed into the same
mixer) (Fig. 5.13)
– once the preset quantity of water and powder is dispensed, the whipper
motor is switched off.
5.1
VACUUM SYSTEM (optional)
The Lei300 machines can be equipped with a vacuum system for the storage
of coffee beans (Fig. 5.14), which helps preserve their organoleptic properties
and avoid deterioration of espresso coffee.
The vacuum system consists of:
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a bell that is hermetically sealed with a cap and lock (Fig. 5.15 - posn.1),
connected to an air suction system placed inside it; the bell interfaces
with the doser/grinder by means of snap fittings and a valve body (Fig.
5.15 - posn.3) with gaskets (Fig. 5.15 - pos.2), thanks to which the coffee
grains are fed to the doser/grinder without coming into contact with the
external environment, thus guaranteeing the preservation of vacuum over
time.
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The suction system consists of a pump that sucks in the air from the bell
and expels it outside (Fig. 5.16 - posn.5), the vacuum created is main-
tained within a set maximum and a minimum range by two vacuometers
(Fig. 5.16 - posn. 6), which activate or deactivate the pump according
to the value of vacuum. The negative pressure value is maintained over
time thanks to the presence of a check valve on the suction circuit.
The presence of vacuum and its value can be monitored via the vacuometer
mounted on the bell (Fig. 5.15 - pos.4).
FEED HOPPER LOADING:
Once the door and the upper cover of the machine have been opened, open
the hermetically-sealed cap to load the coffee beans into the hopper; in the
presence of a vacuum system, the cap does not open easily, and you need
to restore the air pressure in the bell as follows:
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Disable the vacuum system in the maintenance menu (vacuum recovery
system disabled)
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Restore the air pressure inside the coffee bell by pressing the reset valve
situated at the bottom of the bell (Fig. 5.17); hold the valve pressed until
it is fully reset (the vacuometer on the bell shows 0 bar – Fig. 5.18).
When the air pressure has been zeroed, you can open the hermetically-
sealed cap by releasing the lock with the key provided (Fig. 5.19) and
rotating the cap.
When the coffee has been loaded and the cap has been closed, exit the
maintenance menu and re-enable the vacuum system.
To facilitate bell loading, you can remove the bell unit from the doser/
grinder and secure the bell to the support in the machine (Fig. 5.20)
BELL ASSEMBLY REMOVAL
The vacuum bell can be removed from the machine by removing the fixing
knob (Fig. 5.21) and lifting the bell unit.
The system has been designed in such a way as to maintain the vacuum
unaltered even when the bell has been removed.
ESPRESSO DISPENSING
This process only takes place with models equipped with a vacuum system.
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The machine activates the coffee grinder until the amount of coffee set
by the doser has been reached (Fig. 5.22).
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The doser electromagnet is enabled, which causes the door to open and
the coffee to drop into the infusion cup.
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If the coffee in the doser is insufficient, the valve in the vacuum system
activates and starts to rotate (Fig. 5.23).
This valve continues to rotate until the correct amount of coffee beans is
loaded into the grinder.
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At this point the machine repeats the grinding process until the set dose
is reached.
If the set dose is not reached, the system repeats the operation three
times, if on the third run the dose is not reached, the machine will display
a coffee Empty state.
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If the set amount of coffee is reached in the doser, the electromagnet
activates and causes the door to open and the coffee to drop into the
infusion cup.
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The gear motor activates and rotates the unit to the dispensing position
and simultaneously tamp the coffee pod (Figs. 5.6 and 5.7).
– The pump (Fig. 5.24) that supplies the set amount of water and is control-
led by an electronic device (volumetric meter) activates, picks up coffee
from the boiler.
– The gear motor activates again and returns to the home position, while
the used coffee pod is ejected.
The sequence of these operations (coffee grinding and release) can take place
in reverse order, depending on the type of programming.
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ENGLISH
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