13.3 Descaling - Wega MININOVA CLASSIC DUO 2GR Use And Maintenance Manual

13.3 Descaling

This procedure is designed for use with liquid
descaling "PULYDESCALER espresso".
For the descaling cycle, perform the following
steps:
If the machine is in "Water Mains", mode, it must
be switched to internal tank (see specific paragraph);
• turn on the machine and bring it to working
condition: the gauge should show a pressure of
1-1.2 bar;
• place under all coffee spouts a large pitcher and
make sure the levers of the groups (F) are closed;
• fill the tank with a solution of 125 ml of "PULY-
DESCALER espresso" and 400 ml of water at room
temperature;
• remove the upper grid (H) so as to gain access to
the descaling switch (E);
• set the switch (E) in position 1; the corresponding
LED (G) lights up to indicate that the machine is
configured for the descaling;
• replace the top grid;
• perform a series of 30-second deliveries, al-
ternated by another 30 second pause on both
dispensing units, until the tank containing the
solution of detergent will be emptied completely;
• remove and wash the tank with water;
• fill it with 4 liters (tank full) of clean cold water
and put it back in place;
• perform another series of deliveries on all dis-
pensing units, until the tank will be emptied so
as to perform the complete rinsing;
• remove the upper grid (H) and return the descal-
ing switch to position (0), then replace the grill.
• At this point, the procedure is complete; if you
want, you can reconfigure the machine to be
fed by the water mains; otherwise, if everything
is left unchanged, it will continue to be fed by
the inner tank.
!
Throughout the procedure DO NOT open the water
and/or steam taps.
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If during the dispensing is blocked during the
procedure, check if the LED (G) is on. If it is off, return
the machine to working conditions by performing
these steps:
• make sure that the levers of the groups (F) are in
the closed position;
• remove and wash the tank with warm water,
then fill it with clean cold water and put it back
in place;
• return the descaling switch (E) to position (0);
• return the machine to working condition: the
gauge should show a pressure of 1-1.2 bar;
• repeat the descaling procedure again if not com-
pleted; otherwise, it will be sufficient to carry out
the rinsing only.
!
For perfect cleaning, only use special detergent
that is to be diluted in the amount of cold water
indicated on the package (see installer).
!
All operations must be performed by technical
personnel only.
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User manual
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