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01-2018 5035 01
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Every time the appliance is switched on,
the brewing unit carries out a full rotation
before performing the normal cycle in order
to ensure that the device is in the correct
initial position.
The brewing unit can dispense espresso-
type beverages (high pressure infusion)
and fresh brew beverages (low pressure
infusion).
DispENsiNg
cyclE
This requires:
-A coffee-based selection that requires
grinding; the grinder operates until the cof-
fee doser chamber is full.
When the doser is full, the ground dose
is released into the unit's vertical infusion
chamber.
or
-A selection that uses pre-ground coffee;
the pre-ground product dose is dispensed
directly into the brewing unit.
The gearmotor grafted on the pinion,
makes the cranks rotate which causes the
infusion chamber to rotate 30°.
The upper piston aligns itself with the infu-
sion chamber and descends inside it.
The stop position of the piston for infusion
will be:
-For espresso-type selections, this de-
pends on the quantity of ground coffee
inside the infusion chamber.
or
-For fresh brew selections, this is fixed and
at the highest possible position inside the
infusion chamber (low pressure infusion).
According to the desired selection, the
drink will be respectively released from the
espresso nozzle or the fresh brew nozzle.
When the beverage has been dispensed,
the upper piston lowers in order to me-
chanically compress the coffee pod which
causes excess water to be drained via the
3rd route of the dispensing solenoid valve.
At the end of the cycle the gearmotor is
activated in the opposite direction, lifting
the upper piston and rotating the infusion
chamber towards the emptying side, on the
opposite side of the dispensing side; the
lower piston rises.
Once the emptying position is reached,
the gearmotor inverts its rotation direction
again, bringing the infusion chamber back
to the idle position.
The scraper holds the coffee pod and lets it
fall, while the lower piston returns to the idle
position.
2
3
5
6
7
1
4
Fig. 24
1. Upper piston
2. Fresh Brew nozzle
3. Espresso nozzle
4. Scraper
5. Connecting rods
6. Cranks
7. Pinion
