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Next it will be necessary to check the expansion valve. As the integrated brew group heats to operating temperature the
pressure in the integrated brew group will rise. There is an expansion valve behind the drain tray that allows some water
to escape during this process to limit the maximum pressure in the integrated brew group to 12 bar. Please monitor
the integrated brew group pressure gauge during the initial heating process. You should notice the gauge approach 12
bar and stop. If the pressure gauge does not reach 12 bar or if the pressure gauge rises above 12 bar, then it will be
necessary to adjust the expansion valve. Please follow the next step to properly adjust the expansion valve.
6
Steam boiler
pressure gauge
Integrated brew group
pressure gauge
Summary of Contents for linea mini
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