Alarm Signals - Iberital Expression Pro Installations- Und Betriebshandbuch

2.3.3. Alarm signals

A. EXCESS BOILER WATER FILLING TIME
The control unit has a waiting time for when the boiler is filling with water.
If the level sensor is not covered with water within one minute (two minutes Expression Pro), the control unit safety
control will stop the water filling process and the motor.
The signal for the control unit alarm is the five LEDs flashing simultaneously. (In all groups).
This alarm signal could be caused by a lack of mains water supply to the machine, an obstruction of the water inlet or a
problem with the control unit that is preventing the signal for automatic water filling from being sent.
Warning
This alarm signal is always activated during the filling process when this immediately follows
machine installation. This is due to the fact that it takes more than 1 minute to fill the boiler. When
this happens, set the switch to zero and return it to the filling position in order to continue filling
the boiler.
Iberital IB7
B. NO IMPULSES FROM THE FLOW METER (5 seconds)
If during feed there are no impulses from the flow meter, the control unit will detect it and the LED for the selection being
dispensed at that moment will light up and flash, but dispensing will not stop.
This alarm signal is produced due to a bypass of the signal from the flow meter cover, or due to a poor connection, or
lastly due to some internal problem in the control unit. If this occurs contact the after-sales service.
C. EXCESS FEED FROM THE FLOW METER
If the coffee feed time is over 2 minutes (3 minutes Expression Pro), the control unit detects an excess in the normal coffee
feed time.
Coffee feed will be stopped automatically and the LED for the chosen selection will remain flashing.
This alarm signal is either due to an obstruction to the flow of water, and the control unit receives slower and more drawn
out impulses than during the normal feed time, or because the coffee is ground very finely or packed in the filter too
tightly, causing excess weight, thus preventing the water from flowing with suitable fluidity.
D. DEPOSIT LEVEL INDICATORS (only portables machines)
This machine has a system for indicating both minimum and maximum levels, which works as follows:
Minimum Level – When the water tank reaches its minimum level, the control unit cuts the current to the
button pad and the heating element, in order to prevent damage to both the element and the pump due
to a lack of water. At that moment the LEDs on the button pad will begin to flash, advising the user that
the deposit must be filled.
INSTALLATION AND OPERATION MANUAL
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