La Marzocco Strada AV, Руководство по эксплуатации

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will be switched on, activating the auto-fill
solenoid valve and the motor pump. This
will fill the steam boiler to a predetermined
level and will shut off when full.
Note: Air inside the steam boiler may build
up pressure (which may be detected
through the pressure gauge).
Once the pump stops, check the display,
the message “Coffee Boiler Filled?”
should be displayed. Press
to
confirm that the preceding procedures are
complete.
The installation is now complete and the
espresso machine should be heating to
operating temperatures.
2) Waiting for the Espresso Machine to Heat to
Operating Temperature
During this time, it may happen that
the pointer of the coffee boiler pressure
reaches as high as 14-15 bar. This may
happen anytime that the heating element
is in the “on” condition. In this case, it
is necessary to adjust the expansion valve
(see the picture below about the three
coffee boiler expasion valves) in such a
way that the pressure never exceeds 13
bar.
In normal operating conditions, the coffee
boiler pressure transducer, while brewing,
can read anywhere from 0-12 bar when
brewing.
When the steam boiler reaches operating
temperature, the light on the Tea dispense
button will switch on.
3) Brewing after first installation
Once the first installation procedures are
finished, before proceeding with brewing
coffee, hot water and steam, please follow
these steps:
• Engage the portafilters by inserting
them into each group, brew water
through each group for at least two
minutes.
• Being careful to avoid burns, turn
on each steam wand for at least one
minute.
• Turn on the hot water valve for the
time necessary to allow the following
quantities of water to be brewed:
- At least 1 liter for a 1/2 group machine
- At least 2 liters for a 3 group machine
4) Installing the portafilters
Install the portafilter(s) by inserting them
into the group and rotate the handle from
left to right. When the portafilters are
inserted properly, you can press any of
brew buttons to start the flow of water
through the portafilter. You should allow
hot water to pass through the empty
portafilter(s) for a few seconds each time,
in order to preheat the portafilter.
Note: It is important to leave the portafilters
installed in the espresso machine when
not in use. The portafilter must remain
heated for the brew process to function
correctly.
Display
Expansion
Valve