Water Renewal - Astoria 1GR Use And Maintenance Manual

6.6.3 Gas heating
(if a gas system has been installed)
• Turn the power switch (A) to position 1.
• Open the gas valve (B) on the mains.
• Press and hold the button (C) and simultaneously press
the ON button (D). Once the flame has ignited, hold down
the knob (C) for a few seconds, to allow the thermocouple
to activate correctly.
• Then check that the flame has ignited through the win-
dow (E).
• Wait for the operating pressure shown on the pressure gauge
to reach the working value of 0.1-0.12 MPa (1-1.2 bar).
C E
D A
6.6.4 Electric + gas heating
(if a gas system has been installed)
During the
(roughly 20 minutes), the negative pressure
valve will release steam for a few seconds until
the valve closes. Do not open the gas mains when the
heating unit is empty.
• Proceed as indicated in the previous paragraph.
• After checking that the flame has ignited, turn the power
switch (A) to position 2. In this way the heating unit's
heating element is powered and the operating pressure
will be reached more quickly.
• Wait for the operating pressure shown on the pressure
gauge to reach the working value of 0.1-0.12 MPa (1-1.2
bar).
Turning off the machine
6.6.5
Turn off the machine using the main switch or power switch.
TECHNICIANS' manual
machine's heating-up

6.7 Water renewal

When the machine is being installed, the Technician must re-
place the water inside the hydraulic circuits by following these
steps:
• When the installation is complete, the appliance must be
started, brought to the nominal working condition and
left in the "ready-to-operate" status for 30 minutes.
• Next, the appliance has to be turned off and fully emptied
of the first water introduced into the entire hydraulic cir-
cuit, in order to eliminate any initial impurities.
• The appliance must then be filled again with water and
brought to nominal working conditions.
• Upon reaching the "ready-to-operate" status, the follow-
ing dispensing operations must be performed:
Continually dispense from each coffee group, in order
-
to empty at least 0.5 litres from the coffee circuit. If
there are several dispensing points attached to the
same exchanger/coffee heating unit, divide the vol-
ume by the number of dispensing points.
Empty the heating unit of all its hot water by contin-
-
uously dispensing through the specific spout. If there
are multiple dispensing points, divide the volume by
the number of dispensing points.
B
Continuously release steam for at least 1 minute from
-
each steam dispensing point.
If the machine remains inactive for longer than
a week, the Technician must renew 100% of the
water inside the hydraulic circuits, as indicated
above.
phase
Before using the machine, run a few empty dis-
pensing cycles with the filter holder attached
for a few seconds to release any air inside the
circuit and in turn, allow the dispensing groups to fully
heat up.
Before using the machine, dispense a few cof-
fees to test the grind fineness and to check the
operating pressure of the machine.
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