EVOCA Kalea - OPERATION; BREWER UNIT

28 01-2018 5035 01
OPERATION
brEwEr uNit
If a coee-based selection is requested,
the grinder is activated until the coee
doser chamber is full.
When the doser is full, the coee dose is
released into the infusion chamber which is
located vertically inside the coee unit.
The gear motor engaged on the pinion lets
the cranks rotate, which cause the infusion
chamber to rotate as well.
The upper piston aligns itself with the infu-
sion chamber and descends inside it. The
position where the piston stops for the infu-
sion will depend on the quantity of coee
inside the chamber.
2
1
3
4
5
6
7
Fig. 22
1. Upper piston
2. Coffee outlet nozzle
3. Scraper
4. Rods
5. Cranks
6. Pinion
7. Exhaust pad slide
At the end of the coee dispensing phase,
the upper piston goes down in order to me-
chanically squeeze the coee pod, facilitat-
ing the expulsion of excess water through
the 3rd route of the dispensing solenoid
valve.
At the end of the cycle the gear motor 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 gear motor inverts its rotation direction
again, bringing the infusion chamber back
to the idle position.
The scraper holds the coee pod and lets it
fall, while the lower piston returns to the idle
position.
8
1
3
2
7
5
4
6
Fig. 23
1. Upper piston
2. Coffee outlet nozzle
3. Scraper
4. Rods
5. Cranks
6. Pinion
7. Infusion chamber
8. Lower piston