Espresso Machines

Variations

Semi-automatic, automatic, and super automatic

There are primarily three variations of Espresso machines, Semi-automatic, Automatic and Super Automatic. Here we will provide a brief description of each.

Machines which contain the addition of pumps, sensors, valves, and grinders to automate the brewing process generally are referred to as automatic.

• Semi-automatic machines are automatic in the sense water is delivered by a pump, rather than manual force and remaining brew pressure in the basket is dissipated with a three way valve.
• Automaticmachines add a flowmeter inline with the grouphead. When the programmed amount of water has flowed through the flowmeter, the pump is automatically turned off and brew pressure released through a three way solenoid valve.
• Super-automatic machines operate by automatically grinding the coffee, tamping it, and extracting; all an operator needs to do is fill the bean hopper, and if the machine is not connected to a water line, add water to a reservoir. Additionally, models contain an automated milk frothing and dispensing device.

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