Every group is independently thermoregulated, with its own separate
“THERMOSIPHON CIRCULATION”.
The following devices are found on the front of the machine where the
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for the themosiphon circulation water and for the coffee.
The three group valves perform the following functions:
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and allows the passage of water to the ground coffee.
The valve is closed when the group is not operating and allows the
thermosiphon circulation.
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on the pressure.
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lever cam wheel.
HOW THE GROUP FUNCTIONS
A. Group at rest.
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INFUSION TIME
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the 4 perforations in the central head.
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to reach the pump delivery head value.
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16. The Group
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ground coffee has reached the pump delivery head, dispensing of the
“coffee cream” commences and continues until the group is halted.
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coffee grounds.
Upon completion of the dispensing, the group drains automatically to remove
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1. All the group components return to the point A position.
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