Bezzera BZ07 DE Manual De Instrucciones página 24

BEZZERA BZ07
MOD.
7 - TROUBLE SHOOTING
Problem
The coffee dispenses
too abundantly
The coffee is too cold
The yellow light
always off
The coffee is tepid
The coffee is too hot
Coffee deposit on the
cup bottom
Diagnostics/solution
The coffee dispenses too quickly and the
cream is clearer than usual.
Possible causes:
1- The grind of the coffee is too coarse.
2- The coffee into the filter holder is not
pressedenough.
3- The coffee dose into the filter holder
is insufficient.
Possible causes:
is 1- The filter holders are cold.
2- The coffee grind is too fine.
3- The water circuit of the machine is dir-
ty (milestone).
4- The boiler pressure is lower than 0,8
bar (0,08 Mpa).
The coffee is tepid, although the pres-
sure is normal between 1 and 1,2 bar
(0,12 Mpa). In this case, the pressure
measurement is dummy.
Possible causes:
1- The boiler pressure is higher than 1,3
bar (0,13 Mpa).
2- The machine is covered with some-
thing that prevents its cooling.
3- The machine has been installed in a
position that prevents air circulation.
Possible causes:
1- The coffee grind is too fine.
2- The filter holder is dirtyinside, or the
filter is damaged.
3- The grinder mills are worn, call a te-
chnician to replace them.
24
Suggestions
In cases 1-2-3, it is neces-
sary to adjust the grinder
correctly
In case 1, keep the filter hol-
der mounted on the group.
In case 2 change the coffee
grind. In cases 3 -4 call a
skilled technician.
Call a skilled technician to
check the relief valve.Mean-
while, in order to use the
machine, open the steam
valve, (Fig. 01; pos. 9 the
boiler pressure will drop to
zero: in this way, the heat
elements will be connected
and the temperature will in-
crease. Carry on this opera-
tion every day when turning
on the machine.
In case 1 call a skilled tech-
nician In cases 2-3 reset
the machine cooling condi-
tions.
In case 1, it is necessary to
adjust the grinder correctly.
In case 2, clean the filter
hol-der or replace th filter.
In case 3 the technician's in-
tervention is required.