Gaggia Accademia, Service Manual

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ACCADEMIA 04 OPERATING LOGIC
GAGGIA Rev. 00 / March 2010 Page / 11
4.9 Auto-learning dose (SAS)
08
The aim of this function is to automatically adjust the average dose of ground coffee (AUTO-
LEARNING); this occurs by means of an algorithm based on three pieces of information detected
by the machine board:
1. Number of coffee grinder pulses during the grinding cycle
2. Max average value of the power consumed by the gearmotor during the coffee brewing cycle
3. Flavour selected by the user
The algorithm compares the maximum average value of the power consumed by the gearmotor
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grinding pulse value for the next coffee product.
If the consumption value is less than the minimum current value, the grinding pulses will be in-
creased by 2.
If the consumption value is greater than the maximum current value, the grinding pulses will be
decreased by 4.
If the consumption value falls within the "excessive stress" range, the product is dispensed and
the grinding pulses will be decreased by 10.
If the consumption value falls within the "expel" range, the pad will be expelled and the grinding
pulses decreased by 10.
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This guarantees that regardless of the coffee type used, the grinding adjustment
and any wear on the grinder blades always remains constant.
Important:
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green (A, B and C). When the type or brand of coffee is changed, there may be variations
in the size of the beans and their stickiness or roasting level. This leads to variations in
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compensates this change).
Caution: In case of an excessive dose, ground coffee can fall into the dreg drawer.
This is not a fault, but can occur when the machine is switched on or following a
service.
Setting / Status
Power consumption
in mA
The pulse is corrected in the next grinding process
Exceeded in excess Exceeded in default
A 0LOGÀDYRXU 200 - 300 mA - 4 +2
B Medium Flavour 301 - 450 mA - 4 +2
C Strong Flavour 451 - 600 mA - 4 +2
D Stress 601 - 800 mA - 4
E Excessive stress 801 - 1,000 mA - 10
F Pad expulsion > 1000 mA - 10