Brasilia EXECUTIVE - Page 53

ENGLISH / 26
TROUBLE-
SHOOTING
CAUSES
SOLUTIONS FOR
THE TECHNICIAN
SOLUTIONS FOR
THE USER
Irregular doses
are delivered
(dosed version
only).
• There is a leakage in the
infra-red doser
• The doser’s rotor does not
turn freely
• The delivery solenoid valve
loses from the discharge.
• The expansion valves lose
during delivery (except lever
machine, which is not fi tted
with expansion valves)
• The infusor operates ir-
regularly.
• Replace the doser
if there is humidity on
its outside and on the
diode holder fl ange.
• Replace the doser
• Check and replace
if necessary
• Check the calibra-
tion and eventually
the seal. Warning:
Do not fully unscrew
the expansion valve
regulation union with
the boiler under pres-
sure.
• Check and replace
if necessary.
Contact authorized
service agent
Insuffi cient “use”
of the coffee.
• Pump pressure incorrect.
• Expansion valves calibra-
tion incorrect: they lose dur-
ing delivery (except lever
machine).
• The delivery temperature is
incorrect.
• The delivery solenoid valve
loses from the discharge.
• The warming cycle is
clogged.
• The grain size of the ground
coffee is incorrect (grain too
fi ne or too coarse).
• Shower and fi lters partially
obstructed.
• Regulate the pres-
sure checking the
manometer during
de-livery. Exact cali-
bration value: 9 bar.
• Regulate the cali-
bration.
• Check the tempera-
ture with the thermom-
eter during delivery at
the fi lter holder spout
outlets. Intervene if
necessary using the
pressure switch.
• Check and replace
if necessary.
• Check and even-
tually replace the
gicleur.
• Check the deliv-
ery time and regulate
the grinding if neces-
sary.
• Check and clean;
replace if necessary.
Contact authorized
service agent