Technical Principles
1ª review – UK 12 – 2020
4
1.
INTRODUCTION
The semiautomatic machines of the Vitro X1 series are destined for the elaboration of
espresso coffee and soluble drinks consisting of the mixing of warm water with product in
powder or granulated.
In the rest of the book, and for major briefness, the elements that are
indicated will be named like:
The machines of the series Vitro X1: machine or machines.
The coffee brewer or coffee group: group or brewer.
The electroválvulas: EV.
1.1. DEFINITIONS
Espresso coffee: Infusion of coffee elaborated according to the following conditions:
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7 g of ground coffee.
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The temperature of the infusion water between 92º C and 96º C.
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The water pressure at 8 kg/cm²La presión del agua de erogación a 9 kg/cm².
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The infusion time of the coffee between 12 and 20 seconds.
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The volume of water in the infusion 50 ml.
Infusion: this is the name given to the process of passing hot water through the ground
coffee to extract its oils and essences.
-
Volumetric infusion: when the process of infusion uses a constant volume of
water.
Coffee tablet: the residual compressed coffee grounds after the infusion process.
Programming mode: when the machine is ready for any of its functions or parameters to be
programmed.
Working mode: when the machine is in the working state and ready to prepare any of the
services it offers.
