La Marzocco Strada, Руководство пользователя

Страница: 23 / 23

power switch
A three-way switch that applies power to the espresso machine. During start-up, the first
position provides power to the dosing and fill system. When the machine is full, the second
position is engaged to provide electricity to the heating elements.
pressure gauge, double scale
Measures the steam and brewing pressure in bars. The top scale relates to the steam vessel and
the bottom scale relates to the brewing boiler. Typically steam pressure maintains a level of
1.5 bars. The coffee boiler typically measures 9 bars while brewing.
pressure, tamping
The amount of force the barista must apply to the coffee in the portafilter to achieve the
desired shot time.
Scale
A dissolved mineral solid, usually calcium or lime that can accumulate on the inner workings of
the espresso machine and eventually causing damage.
sight glass
A clear glass that allows the operator to view the water level in the steam boiler
solenoid coil
Converts electrical energy into a magnetic field that moves the plunger in the valve.
solenoid plunger
a rubber sealed piston that seals against a valve seat to control the flow of water through the
valve
Tamper
A small hand held device used to apply pressure to the ground coffee prior to brewing to slow
the extraction time.
Thermostat
A device used to regulate temperature by controlling the flow of electricity to the element in
the brewing boiler.
tip, steam wand
A stainless steel nozzle used to direct the flow of steam into milk.
valve, expansion
A device that relieves excess pressure from the brewing system.