Control Of Water Temperature In The Boiler (C11 Ita); Controlling Brewing Water Temperature; Coffee Dosage Control O); Measuring The Brewing Pressure (13 Indice) - ELEKTRA INDIE Instruction Manual

6 CONTROL OF WATER TEMPERATURE IN THE BOILER
Water temperature in the boiler is controlled by a sensor that switches the heating ele-
ments through a remotely controlled power switch.
Consequently, it also controls the pressure in the boiler., kept constantly at 1.8 bar.
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CONTROLLING BREWING WATER TEMPERATURE

Each group head is fitted with an instantaneous heat exchanger circuit and heating
resistance of the infusion water, which reaches the dispenser group pre-heated at a
temperature of around 70°C.
A sensor measures the temperature of the quantity of water to be dispensed, immediately
before its entrance in the filter containing the coffee.
Such system, together with design features displaying low inertia and high thermal insula-
tion, allows the brewing water temperature to be maintained equal to the value set in real
time with high precision and high physical variation speed.
8 COFFEE DOSAGE CONTROL
Each group head is fitted with a flow rate sensor, or a volumetric dosage device.
It measures the volume of water being fed through the group, to ensure that the final
volume of coffee in the cup corresponds to the value programmed by the user.
At the end, the final volume of coffee in the cup, in cubic centimetres (millilitres), corre-
sponds to its weight in grams, since the specific weight of the extract being almost the
same of the water.
To achieve this result, the device control system takes account of the quantity of water
necessary to wet the coffee puck, quantity that does not reach the cup during the extrac-
tion, and adds it to the programmed quantity.
The quantity of water necessary to wet the coffee puck is presetted at the factory, with
the quantity of ground coffee as 6/8 grams for singles and 12/16 grams for doubles.
The dispensing capacity corresponding to these parameters is around 1 cc/second, ie
obtained by grinding granulometry required for the Italian espresso.
When using different quantities of coffeeor different grinding granulometry, kindly contact
Technical Support. This system is not requiring complex and unreliable technologies such
as Gravimetric technology, while still allowing a very high precision in determining the
so-called Brew Ratio but with very low production times, for example, is not requiring the
portafilter weighing before and after loading the coffee.
MEASURING THE BREWING PRESSURE
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The device is fitted with a pressure sensor that measures the pressure delivered by the
pump during brewing
The reading of the screen V3 value, enables the technician to set manually the water
pump pressure while is making a coffee.
(C11)
(C8 2GO)
(C14 ITA)
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