3.1.1 Commissioning
Switch the machine on using the ON/OFF switch. The display illuminates with the text; ‘Position drip
tray and press start’. The inlet valve [KW1] opens, the water ows via the Pressure reducer [PR], Flow
meter [FL1], Pump [KW2] to the Pressure boiler [H2-3], which is lled. Inlet valve [KW1] closes when
Flow meter [FL1] has measured 1.3L. The excess water (approx. 0.2 litres) ows via Pressure relief
valve [DV1] to the coffee outlet and drip tray. When the boiler has reached temperature, the machine
is ready for use. Once the commissioning menu has been activated, the control remembers that the
water system has been lled. If the machine must be taken out of use for an extended period, the
water system must be drained, See chapter 7. Shut down.
boiler filling out of order out of order plaece cup
place empty container
press enter (v)
stop? press x
75 %
boiler filling
90 C
boiler heating 12:00 06-09-15
3.1.2 Shut down
Activate the shut down menu in the service menu and following the instructions on the display. To
drain the boiler, an Ø 8 mm drain hose must be connected to the boiler supply. To do this, remove the
rear panel of the machine. The control now knows that the water system is empty and reconnection
will automatically activate the commissioning menu.
Shut down Shut down Shut down Shut down Shut down
remove
supply hose
press enter (v)
stop? press x
Boiler
depressurising
moment please
remove
drain plug
press enter (v)
stop? press x
boiler
draining
moment please
boiler
is empty
switch off
machine
3.1.3 No preparation
When no drinks are dispensed by the machine, the pressure in the pressure boiler [H2-3] is main-
tained at 3 bar. Any expansion water from the boiler drains away via valve [DV6] which is switched
as an NO valve. The 3 bar overpressure relief valve OVP1 drains any boiler expansion water to the
drainage reservoir.
3.1.4 Coffee preparation
When a coffee is chosen, the coffee grinder measures approx. 7.5 g coffee (9.5 g OptiBean XL) into
the espresso group, which then turns to the set position (brew). Inlet valve [KW1], coffee valve [DV1]
and expansion valve [DV6] are activated. Note; the expansion valve [DV6] is connected as an NO
valve (normally open). Once activated, the pressure relief valve [OPV1] is closed, as a result of which
it is possible to increase the pressure to 10 bar while the coffee is made. The ground coffee is rst
(PI-time) moistened with a small quantity of water (Pre-infusion). This is done at a low water pressure
of 2 bar. After a short soak interval (PI-pause) the water pump [KW2] starts, the pressure is increased
to 10 bar and the actual coffee-making process begins. Depending on how ne the coffee is ground
and the addition of water, the coffee-making process takes between 15 and 25 seconds. After the ow
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