Miele KM 6520 FR Operating And Installation Instructions page 37

Activating the safety lock
 Touch and hold the  and
 sensors at the same time for
6 seconds.
The seconds can be seen counting
down in the timer display. When this
time has elapsed  will appear in the
timer display. The safety lock is
activated.
Deactivating the safety lock
 Touch and hold the  and
 sensors at the same time for
6 seconds.
 will appear briefly in the timer display
and then the seconds will count down.
Once the time has elapsed, the safety
lock is deactivated.
Safety features
37