Conti TWIN STAR 2, Technical Documentation Manual

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If the required temperature is not reached within 60 seconds, the steam delivery will be stopped
automatically.
When steam is delivered, the display of the left group shows:
Steam
in Progress
In case of simultaneous delivery on the left group of espresso, tea & steam, the display will show
the information alternately.
7.4 Others functions
7.4.1 Safety level of steam boiler :
The water level is controlled by the sensor SS.
The sensor (SS) is not activated when the machine is OFF.
When the machine is ON and if the sensor does not detect the presence of water within 1 sec:
an alarm is activated,
the machine will turn off automatically and the left display will show:
Steam boiler
empty
To suppress this alarm, the machine must be turned off and on again.
Remark: If the machine is turned on with the steam boiler empty, the automatic water filling will
start without activating the alarm.
If the boiler fails to fill, the filling Time Out (sensor SN) will activate the alarm.
7.4.2 Automatic filling up of the steam boiler: :
The water level of the steam boiler is controlled by the level sensor SN.
When the sensor does not detect the presence of water within the time T ON, the solenoid valve
of the water supply EE will be activated.
When the sensor detects the presence of water within the time T OFF, the solenoid valve of the
water supply EE will be deactivated.
Both times, T ON and T OFF can be adjusted in the programming mode.
While the steam boiler is filling up, the left display will show:
Filling up
In Progress
The steam boiler can be filled up using the pump MP and the solenoid valve EE simultaneously -
see programming mode.
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