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EN
24
Next it will be necessary to check the expansion valve. As the coffee boiler heats to operating temperature the pressure in the
coffee boiler 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 coffee boiler to 12 bar. Please monitor the coffee boiler 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.
9
Steam Boiler
Pressure Gauge
Coffee Boiler
Pressure Gauge
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