Philips Saeco Exprelia Series, Руководство по обслуживанию

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EXPRELIA 04 OPERATING LOGIC
Saeco International Group Rev. 00 / June 2010 Page / 11
4.9 Dose self-learning (SAS)
08
The aim of this function is to automatically regulate the average dose of ground coffee (SELF-
LEARNING); this takes place with an algorithm based on three pieces of data that the machine
receives via the card:
1. Number of coffee grinder pulses during the grinding cycle
2. Max. average value of the power consumed by the group motor during the coffee brewing cycle
3. Aroma selected by the user
The algorithm compares the maximum average value of the power consumed by the group motor
with the value listed in the table for the selected aroma, in order to calculate the new grinding
pulse value for the next coffee produced.
If the value of the power consumed is lower than the value of the min. current, the grinding
pulses will be increased by 2.
If the power consumption value is greater than the maximum current value, the grinding pulses
will be decreased by 4.
If the power consumption value falls within the “over-torque” interval, the product will be
dispensed and the grinding pulses will be decreased by 10.
If the power consumption value falls within the “abort cycle” interval, the pad will be expelled and
the grinding pulses will be decreased by 10.
If the “pre-ground” fl avour is selected by the user, no modi fi cation will be made.
This guarantees that, regardless of the coffee type used, the grinding level setting
and the wear on the grinders always remains constant.
Important:
For perfect operation, machine adjustment should take place in the area of the fi elds
highlighted in green (A, B, 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 power consumption (mA), with resulting excessive or insuf fi cient doses (until the necessary
adjustments have been made to compensate for this change).
Caution: In the case of excessive dosage, powder may be expelled into the dreg
drawer. This is not a fault, but can occur during preliminary operation or after a
service.
Setting/Status
Power consumption
in mA
Pulses corrected in the next grinding process
Exceeded by De fi cient by
A Mild aroma 200 - 300 mA - 4 +2
B Medium Aroma 301 - 450 mA - 4 +2
C Strong Aroma 451 - 600 mA - 4 +2
D Over-limit 601 - 800 mA - 4
E Overwork 801 - 1000 mA - 10
F Pad expulsion > 1000 mA - 10