La Marzocco linea Manual De Instrucciones página 14

N.B.
The programs for the first group from the
left will become the default programs for
the remaining groups, although you may
wish to program these groups differently
in which case you need to follow steps
1 to 5 for the remaining control panels.
The leftmost control panel must be
programmed first; indeed, if you were to
program this last, all its settings would
be automatically transferred to the other
groups.
It is recommended that each group be
programmed separately, from left to right.
Each button also works as a switch and,
therefore, you may stop coffee brewing
at any time, whenever you have obtained
the desired quantity, by pressing the same
button.
Fault warnings
If the wheel does not send any signals
to the electronic module for more than
3-4 seconds, the LED of the button which
has been pressed will start flashing. This
means that:
A) water is not flowing over the wheel
and is therefore not reaching the coffee
groups, which may be due to:
1. the ground coffee being too fine
meaning that the coffee gets brewed
too slowly (drop by drop) and therefore
the wheel cannot measure the water
13
flow within the factory-set time of the
electronic module.
2. insufficient water flow through the
groups (i.e. onto the coffee powder)
probably due to a combination of one or
more of the following occurrences:
• partial blockage in one of the pipes;
• a malfunctioning motor pump;
• a malfunctioning solenoid valve;
• partial blockage of the diffuser screen.
B) there are calcium deposits inside the
water flow counter which prevent the
wheel from turning properly.
C) the wheel itself and the sensor (top
part) of the counter, may be faulty.
Coffee brewing
Take a portafilter and place some ground
coffee in the filter itself: 1 dose for the
small filter, 2 doses for the larger filter.
Press down on the ground coffee with
the supplied tamper and engage the filter
holder again into the bottom of the group
and then press one of the buttons with
the symbols for 1 or 2 cups, short or long
You may press the same button again in
order to terminate coffee brewing before
its programmed stop. If you need an
unusual amount of coffee, you may use
the button with the spiral symbol and
press it again once you have obtained the
desired quantity.
Once the coffee has been completely
brewed, the pressure in the filter holder
is discharged automatically, the portafilter
may then be removed to repeat the
operation as needed.