Miele B 3312 Operating Instructions Manual page 53

 Add descaler
 Press the OK button to display the
next step.
The message 
now appear in the display.
Fit water container
 Fit water container
 Fit the water container back in the
tower.
After about 10 minutes (the time it takes
for the descaling tablet to dissolve), the
descaling process begins automatically.
Messages in the display will tell you
when to empty the residual water
container or when to fill the water
will
container.
If the water container becomes
empty during descaling or if it is
removed from the tower
unprompted, the message 
refill water container
During the descaling process, water is
pumped into the steam generator at
various times and is drained back
again into the residual water drawer.
Some steam will escape and
splashing noises can be heard during
this process.
Cleaning and care
will appear.
Fit or
53