La Marzocco Linea EE Betriebsanleitung Seite 14

COFFEE BREWING BUTTON (fig.1 part 5)
CAUTION
DO NOT REMOVE THE FILTER HOLDER WHILE
RELATIVE GROUP IS BREWING HOT LIqUIDS. THE
COFFEE BOILER CONTAINS WATER AT ELEVATED
TEMPERATURE. WATER TEMPERATURE OVER 125°F
/ 52°C CAN CAUSE SEVERE BURNS INSTANTLY OR
DEATH FROM SCALDING.
For EE model - fig. 1
Take a portafilter and place some ground
coffee in the filter itself: the suggested
amounts (in grams) to use are laser-marked
on the actual filters. Press down on the
ground coffee with the supplied tamper and
engage the filter holder in the group and
then press the switch (part 5) thus allowing
coffee to be brewed; when you have obtained
your desired amount of coffee, press the
switch again (part 5), at which point
the machine discharges the pressure built
up in the filter holder. The holder may then
be removed to proceed with making another
coffee, as required.
13
For PADDLE model - fig. 2
Take a portafilter and place some ground
coffee in the filter itself: the suggested
amounts (in grams) to use are laser-marked
on the actual filters. Press down on the
ground coffee with the supplied tamper
and engage the portafilter in the group.
Move the paddle handle of the group from
right to left (part 1) thus allowing coffee
to be brewed; when you have obtained
your desired amount of coffee, return the
paddle handle back to original position
on the right-hand side, at which point the
machine discharges the pressure built up
in the portafilter. It may then be removed
to proceed with making another coffee, as
required. In order to pre-infuse the coffee
in the filter, once the portafilter has been
engaged in the group, move the paddle
handle only half way from the right to left for
a few seconds, then move all the way to the
left in order to brew your espresso/s, until
the desired dose is released in the cup, then
turn off by returning the paddle handle to
its original position on the right-hand side.
For AV model - fig. 3
It is essential to program the quantity of
water delivered by performing the following
operations with the utmost care. In case
of doubt or difficulties, please contact our
technical service.
Introduction
COFFEE BREWING CONTROL PANEL (part. 5 fig 3)
The coffee metering system is based
on the amount of water which will be
delivered onto the ground coffee, already
set in the filter and the portafilter, which is
measured through a water volume control
system, which is located above the group
assembly flange, where the group connects
to the boiler. Inside each counter there is a
paddle wheel (which we shall call wheel for
simplicity) which rotates as water flows by.
The sequence of the water cycle is as
follows:
group counter
counter solenoid valve
solenoid valve diffuser
diffuser coffee brewing spout
The wheel is designed in such a way as to
rotate freely when water is flowing by; it
sends 2 signals, every complete rotation,
to the electronic module which processes
them and activates the solenoid valve relay
of the corresponding group, as well as the
motor pump relay.
Such electronic module also processes the
signal sent by the boiler's level gauge and
consequently activates the relative solenoid
valve relay of the same motor pump.