Section 8 - Espresso (B2C) System
Genesis B2C machines are capable of producing high quality espresso based drinks
through the unique CoEx® brewer unit either independently (Espresso, Americano),
or in conjunction with the soluble product (Cappuccino, Caffe Mocha etc). The
machine can also vend high quality freshbrew coffee from pre-ground product.
8.1 Example Vend
When an Espresso drink is selected the following sequence occurs:-
1. The customer selects an espresso drink. Fresh beans are delivered into the
grinder and the grinder is operated for a pre-determined time. Ground coffee is
deposited into the CoEx® brewer.
2. The brewer moves to the vend position. The brewer motor starts running clockwise,
causing the filter assembly to cover the piston chamber and the piston to move
upwards, forming the ground coffee into a compressed cake as it does so.
3. When the heater reaches the correct temperature the inlet valve is opened and
the 3 bar pressure relief valve closed. At the same time the pumps will start
pumping water through the system and into the brewer.
4. While water is passing through the system a water flow meter will send pulses
back to the main controller and the espresso selection will be delivered into the
cup.
5. Once the required amount of water has been pumped through the system, the
inlet valve closes and the pumps stop pumping water through the system. The
brewer compresses the used coffee pellet, the pressure relief valve is opened and
the espresso valve switched on.
6. The brewer motor reverses and drives the piston back up to the top of the
chamber. The wiper mechanism ejects the used coffee cake into the dry waste
container and the brewer piston moves back to the stand-by position.
8.2 System Overview
Note: A diagram illustrating the water system fitted to Genesis B2C machines is
included at the end of this section.
Important: The machine must be operated in conjunction with a water filter of food
grade quality, capable of removing temporary hardness (scale), heavy metals (lead,
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Technical Manual
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