ENGLISH
distribution of the product and returning the doser to idle-on status.
ATTENTION: THE 3d5 MAESTRO DELUXE DOSER CONTEMPLATES THREE DIFFERENT TEA DOSES (ONE FOR EACH GROUP).
TEA + PUMP
It is possible to combine the distribution of tea with the pump. See TECHNICAL LEVEL Programming.
STEAM SPOUT DISTRIBUTION CYCLE
This function and the keyboard for performing it can be activated in the TECHNICAL LEVEL Programming (see paragraph).
Steam is enabled only with the doser lit and when the minimum level has been
reached (probe SLIVMIN covered).
Only at the time of switching on does the doser wait for the boiler to be completely filled.
The temperature of the liquid heated by the steam is measured by means of a temperature
probe positioned on the steam spout and connected to the STLVAP input.
When the button K4GRx is pressed the solenoid valve EVVAP is energised until the
temperature set in Programming for Simulation is reached (see paragraph below).
the display shows:
However it may be interrupted in advance by pressing the steam button again.
Once the programmed temperature has been reached, it is possible to continue distributing steam by holding down the steam button.
If the temperature is not reached within 120 seconds, steam distribution is ended automatically.
The system allows the simultaneous distribution of coffee, tea and steam.
In case of simultaneous operation of two or more of the above, the display shows the respective messages alternately.
DISTRIBUTION
CYCLE (IF MANAGED BY SLAVE BOARD)
This function and the keyboard for performing it can be activated in the
TECHNICAL LEVEL Programming (see paragraph). Steam is enabled only with
the doser lit and when the minimum level has been reached (probe SLIVMIN
covered). The doser waits for the boiler to be completely filled at the moment
of switching on only. The temperature of the liquid heated by the steam is
measured by means of a temperature probe positioned on the steam wand
and connected to the STLVAP input. When the button K6GRx is pressed the
solenoid valve EVVAP is activated until the temperature set in Programming for
Simulation is reached (see paragraph below).
the display shows:
However it may be interrupted in advance by pressing the steam button again.
Once the programmed temperature has been reached, it is possible to continue distributing steam by holding down the steam button. Once steam
dosing is complete, steam wand washing commences automatically (for the washing time given in the paragraph TECHNICAL LEVEL PROGRAMMING).
If the temperature is not reached within 120 seconds, steam distribution is ended automatically. The system allows the simultaneous distribution of
coffee, tea and steam. In the event of simultaneous distribution, the selections are displayed in succession from the first to the last.
STOP STEAM DISTRIBUTION IN PROGRESS
It is possible to interrupt the distribution in progress even when the programmed temperature has not been reached by re-pressing the same
button as used to start distribution of the dose of steam. This operation immediately de-energises the solenoid valve EVVAP , interrupting
distribution of the steam and returning the doser to idle-on state.
LEVEL MANAGEMENT AND REGULATION
MINIMUM LEVEL PROBE
At Power-on, the doser detects the status of the minimum level probe. If there is no water, the ON/OFF control (which the customer will have
connected as he prefers to the heating resistance remote control switch or other actuator) is kept de-energised to protect the heating resistance
against dry operation.
NOTE: When the system is switched on, the control of the minimum level probe is enabled after about 6 seconds.
Whenever the minimum level probe in the boiler does not detect the presence of liquid for 3 seconds, the ON/OFF switch is de-energised to protect
the heating element and this is shown on the display.
the display shows:
When the minimum level probe again detects the presence of water for 3 consecutive seconds, the ON/OFF actuator is re-enabled and consequently
the heating, and the alarm disappears from the display.
Note: the minimum level probe does not control or manage filling, as this function is performed by the level probe.
Vapore
FROM
STEAM
Brewing
Steam
Boiler
Empty
WAND
Gr:x
55
START DISTRIBUTION