Bezzera MATRIX Manual De Instrucciones página 59

Coffee flow is excessive
The coffee supplied is too cold
The coffee supplied is warm
The coffee supplied is too hot
Deposit the coffee on the bot-
tom of the cup
The coffee is distributed too
quickly and the cream is lighter
than usual.
Possible causes:
1 - The coffee has been ground
too coarsely.
2 - The coffee in the filter holder
is not pressed down enough.
3 - There is too little coffee in the
filter holder.
4 – The pressure supplied by the
pump is high (> 10 bar – 1
MPa).
Possible causes:
1 - The filter holders are cold.
2 - The coffee has been ground
too finely.
3 – The machine's water circuit is
dirty (limestone).
4 – The boiler's pressure is lower
than 0.8 bar (0.08 MPa).
The coffee supplied is warm if
the pressure is normal, between
1 and 1.2 bar (0.1 – 0.12 MPa).
In this case, the pressure value is
not correct.
Possible causes:
1 – The boiler's pressure is higher
than 1.3 bar (0.13 MPa).
2 – The machine is covered by
something that prevents cool-
ing.
3 – The machine was installed in
a position that does not allow
air circulation
Possible causes:
1 – The grinding of the coffee is
too thin.
2 - The filter holder is dirty inside
or the filter is damaged.
3 – The millstones of the grinder
are worn out.
4 – The pump's pressure is too
high (> 10 bar – 1 MPa).
59
BEZZERA MATRIX-DUO
MOD.
In cases 1-2-3 adjust grinding
and/or dosing of coffee.
In the 4th case, a technician
must be consulted.
In case 1, keep the filter holder
assembled on the unit.
In case 2, alter the coffee
grinding.
In cases 3 - 4, call a specialised
technician.
Call a specialized technician to
check the exhaust valve. Mean-
while, to use the machine,
open the steam tap (Fig. 01;
pos 9); the boiler's pressure will
drop to zero, thus causing the
enabling of the resistor and the
increase of temperature. Per-
form this operation daily when
turning on the machine.
In the 1st case, call a special-
ized technician.
In cases 2-3 reset the ma-
chine's cooling conditions.
The 1st case can be solved by
adjusting the grinder.
In the 2nd case, clean the filter
holder or substitute the filter.
In cases 3-4 call a technician.