LAVAZZA BLUE LB 4200 Gebrauchs- Und Wartungsanleitung Seite 41

!
During descaling, never open the unit lever.
i
Performing the descaling cycle resets the counters
and the warning disappears.
!
For perfect cleaning of the thermoblocks, only
use special detergent that is to be diluted in the
amount of cold water indicated on the package
(see installer).
!
Descaling can be carried out voluntarily, even in
the absence of warnings.
!
You can delete the warning but not the count.
instructions for the user
41