Astoria 1GR Use And Maintenance Manual page 19

2.9.13 Automatic Water Entry
The Automatic Water Entry system is designed to check the
water level in the heating unit. It consists of:
• A probe inserted into the heating unit (1) consisting of a
stainless steel rod.
• The standard control unit (2) on SAE versions and the elec-
tronic level regulator on the other versions (3).
• A hydraulic circuit with a solenoid valve controlled by the
regulator.
The electronic control unit controls the level of water in the
heating unit. When the level of water in the heating unit
drops, the contact with the probe is interrupted. The control
unit sends an impulse to the inlet solenoid valve and the mo-
tor pump, which are then activated until the normal level of
water in the heating unit has been restored.
To avoid any flooding caused by machine malfunctions or
water leaks in the circuit, the electronic control unit has a
"Timeout" feature which cuts off the automatic water filling
function after a certain time (2 minutes). The LED (4) located
on the front of the machine body comes on to indicate acti-
vation of this system. When installing machines with three
or four groups, the initial water filling time may exceed the
established timeout limit. Should this occur, simply turn the
machine off and then back on to restore normal operating
conditions.
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2.9.14 Volumetric dosing
The volumetric dosing device that is installed on the SAE ver-
sions, measures the quantity of water sent to the group in
order to dispense coffee.
The dispenser generates elec-
trical impulses which are sent
to the electronic control unit.
These impulses are read by
the control unit and counted
while the dose is being pro-
grammed.
The flashing LED light (4) in-
dicates that the electrical im-
pulse has been sent from the
dosing device to the control unit.
2.9.15 Electronic pushbutton panels
The electronic pushbutton panels on the SAE versions allow
the coffee doses to be selected and programmed. They are
connected to the electronic control unit.
To use and programme these, please consult the user manual.
2.9.16 Cup warmer
The cup warmer device warms the cups before they are used.
In some versions it is possible to adjust the temperature by
following the instructions on the user manual.
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