15
2016/01 Rev. 0.0
OptiFresh (Bean) NG 2.0
EN
2.4.2 Grinder (OptiFresh Bean)
• There are two factors that affect the output of the
coffee grinder. The set grinder duration (
2.1 Quick
recipe pro / Coffee)
and the
grinding fineness
of
the coffee grinder.
• When the coffee grinder is set coarser, the volume of
the grind increases.
• When the coffee grinder is set finer, the volume of
the grind decreases.
• Only increase the coffee grinder fineness when the
grinder is running! Adjustment from fine to
coarse can be done when the grinder is stationary.
• Only adjust the grind setting in steps of 1/4 turn.
Note: only the 3rd cup of coffee is 100% made
with the changed grind fineness! (do not taste or
measure the first 2 cups).
Grinding Ideal
If the brewer piston runs down in the
start 3
position a
beige foam layer is (briefly) creates on the coffee.
The grinding adjustment is ok, the brewing process runs
perfectly.
Grinding to coarse
Weak coffee, High coffee dose. The grain size is too
large to get a good extraction. The coffee will be under
extracted. To get a good cup of coffee the coffee
dosage must be extreme high (too much) There is the
danger of overdose.
Adjust the coffee grinder finer (turn adjustment
shaft clockwise). Reduce the coffee dosage in
de recipe menu.
Grinding to fine
The brewer piston is pulled up the
pause 3
due to
a high vacuum in the brewer cylinder. The coffee is
grinded too fine, the flavour extraction is too extreme
(too many bitter substances). The brewer is overloaded,
and can brake down!
Adjust the coffee grinder coarser (turn
adjustment shaft counterclockwise).
Pauze 3
Start 3
Vacuüm
Start 3