Service manual

OPERATION
EN
11
Service Manual
P0055 Coffee Machine - 2006
Edition
2006.08.28
Language
English
SBS valve functional check
To check the correct operation of the SBS valve
make a lungo coffee and, while it is being prepared,
check the difference in the rate of delivery from the
maximum to the minimum positions.
The difference in delivery rate is approx. 2.5 times
(and therefore VERY obvious!!).
Knob in MAX position Knob in MED position Knob in MIN position
-> Coffee dispensing -> Coffee dispensing -> Coffee dispensing
fast medium slow
-> Effi cient coffee extraction -> Effi cient coffee extraction -> Effi cient coffee extraction
-> Medium counterpressure -> Medium-high counterpressure -> High counterpressure
(Light coffee) (Medium-strong coffee) (Strong coffee)
CREME COFFEE ESPRESSO RISTRETTO
SBS SBS SBS