Gaggia Brera Service Manual

Also see for Brera: Operating instructions Operating instructions Manual Operating instructions Operating instructions

Gaggia Brera Service Manual Manual pdf 21 page image

Rev. 00 OCTOBER 2009 Page / 06GAGGIA 04 OPERATING LOGIC4.8 Dose self-learningWith an algorithm based on three pieces of information (listed below) detected by the machinecomputer, the average dose is adjusted automatically (SELF-LEARNING).1. Number of coffee grinder pulses taking place during the grinding cycle2. Max. average value of the power consumed by the gearmotor during the cycle for coffeebrewing3. Aroma selected by the userThe algorithm compares the maximum average value of the power consumed by the unit with thevalue listed in the table for the selected aroma, in order to calculate the new grinding pulse valuefor the next coffee produced.If the value of the current absorbed by the gearmotor is lower than the value of the minimum cur-rent, the grinding pulses will be increased by 2.If the value of the power consumed by the gearmotor is greater than the value of the maximumcurrent, the grinding pulses will be decreased by 4.If the "pre-ground" aroma is selected by the user, no modification will be made.Min. current (mA) Max. current (mA) Aroma (pulses)200 300 Mild (- 10% of the average value)301 450 Average (nominal)451 600 Strong (+ 10% of the average value)– – pre-groundIf the gearmotor power consumption value falls within the “overwork” interval,the grinding pulses will be decreased by 10 and the product will be dispensed.If the gearmotor power consumption value falls within the “expulsion” interval,the grinding pulses will be decreased by 10 and the pad will be dispensed.Min. current (mA) Max. current (mA) Aroma (pulses)800 1000 Overwork1001 - - Pad expulsion06