Miele B 1312 Operating Instructions Manual page 46

Cleaning and care
Preparing for the descaling process
46
The descaling process can only be started when the k
indicator light flashes red or lights up constantly.
^ Disconnect the steam hose of the iron or the steamer from
the steam connection.
Do not connect the iron or the steamer during descaling.
This would interrupt the descaling process by switching
off the appliance. If it is switched on again without the iron
or steamer attached, the descaling process is continued.
^ Press the On/Off button s to switch on the appliance.
The ring around the s button lights up yellow.