Section 8 - B2C (Espresso) 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
pellet 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. Whilst 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 pellet into the
dry waste container and the brewer piston moves back to the stand-by
position.
8.2 System Overview
N.B. A diagram illustrating the water system fitted to Genesis B2C machines is
included at the end of this section (see page 85).
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, copper, iron, cadmium), chlorine and any organic pollutants/discolouration.
Crane Merchandising Systems recommend the Brita AquaQuell compact water filter
for use with Genesis B2C machines.
Technical Manual
83
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