2ª 10028 – E 03 - 2016
3
1.
INTRODUCTION
The automatic vending machines in the Zensia range are designed to elaborate and vend
espresso coffee and instant drink powder mixed with hot water. The final product is served to
the customer in a plastic cup.
In the rest of this document, the names of the following components
indicated below will be abbreviated as shown below:
The machines in the Zensia range, as “machine or machines”.
The coffee infusion group, as “group”. The electro-valves, as “EV”.
1.1. DEFINITIONS
Espresso coffee: infusion of coffee elaborated according to the following conditions:
-
7 g of ground coffee.
-
The temperature of the water the infusion is between 92º C and 96º C.
-
The pressure of the infusion water is at 9 kg/cm².
-
The time of infusion of the coffee is between 15 and 20 seconds.
-
The volume of water in the infusion is 40 ml.
Volume dosage: this dosage system measures the volume of water that is used in the
infusion.
Water pump: an electro-mechanical system used to pump the infusion water and to apply the
necessary water pressure.
Infusion: In coffee terms it means to pass hot water through the ground coffee to extract its
oils and essences.
Volumetric infusion: during the infusion process the volume of water used is always
constant.
Tablet: in coffee terms it means the pressed coffee residue that remains in the group after the
infusion.
Programming status: when the machine is ready to be programmed.
Working mode: when the machine is in ready for the user to request any of services that the
machine offers.
