Mobile Jumpers; Alarm Signalling; Absence Of Pulses Of Volumetric Counter; Pre-Brewing - Laranzato GREEN Serie Gebrauch Und Instandhaltung

9.2.1.4. Mobile jumpers

The electrinic board dosing is provided with a mobile
jumper suitable for the following function:
- P1 mobile jumper
a HIGH level sensitivity
OPEN:
(approx. 1,4 M)
CLOSED: a NORMAL level sensitivity
(approx. 400 k)
NOTE: the status relevant to the mobile jumper
(open/closed) is detected by 3d5 dosing upon
switching on. Do not carry out any variation with
board in ON (power supplied) as the modification is
detected only after a further Power OFF/ON.

9.2.1.5. Alarm signalling

Level time out (filling) in the boiler
Whenever the level probe detects lack of water (pro-
be uncovered) the filling phase is enabled (EVCAR +
PUMP) while the microcontroller activates an internal
timer for the duration of this phase.
If EVCAR+ PUMP remain excited continuously for a
time longer than time-out (x seconds) set by means
of WIZARD of through the TECHNICAL PROGRAM-
MING, dosing is inhibited in all its main functions.
Keyboards are disabled and all actuators inhibited
in every operation
All leds installed on the push button panels start
flashing (½ ON, ½ OFF) to visually signal the alarm
phase to users.
The display will show:
To exit from alarm signalling, perform a Power OFF/
ON of the machine (switching off/on).

9.2.1.6. Absence of pulses of volumetric counter

(5 seconds)
After starting a coffee cycle with volumetric control
(EVx + PUMP in both dispensing and programming
phase), dosing will check the proper running of the
volumetric counter by measuring the pulses sent by
the microcontroller.
If no pulse is measured for a period longer than 5
consecutive seconds, the led related to the selected
dose will start flashing (½ ON, ½ OFF).
After 1 minute (volumetric counter Time-out) of ab-
sence of pulses of the volumetric counter, the dose
under way will be automatically stopped.
9.2.1.7. Pre-brewing (Mod.ME without display)
Dosing can be configured so that the dispensing of
doses 1 Espresso and 2 Espresso is preceded by
pre-brewing. When the dose is started, after time t1,
the group solenoid valve switches off and is kept off
for time t2.
PRE-BREWING ENABLING:
Start up the machine by keeping button A pressed
to enable pre-brewing. The correct enabling of the
PRE-BREWING function is confirmed when the
leds of buttons A and B are lit.
PRE-BREWING DISABLING:
Start up the machine by keeping button B pressed
to disable pre-brewing. The correct disabling of
the PRE-BREWING function is confirmed when
the leds of buttons C and D are lit.
Switch off the machine and switch it on again and
check the desired setting.
When the pre-brewing function is enabled, the regular
dispensing cycle is preceded by a short timed water
jet used to moisten the coffee tablet before the actual
dispensing.
WARNING: If the function is enabled, the
pre-brewing will be enabled also in the dose
programming phase; wait for the end of
this phase before programming the coffee
dispensing doses.
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