Miele M 6160 TC Operating Instructions Manual page 31

 Turn the rotary selector anti-
clockwise until   appears in the
display.
  and  appear in the display and
the  symbol flashes.
 Confirm with OK.
  will light up in the display, and 
will flash.
 Turn the rotary selector anti-
clockwise until   appears in the
display.
  will light up in the display, and  will
flash.
 Confirm with OK.
 and   appear in the display and the
 symbol flashes.
After a few seconds the display
changes to the time of day and the
 symbol.
Almost all functions are now locked.
Only the minute minder can be used
when the system lock is activated (see
"Minute minder").
After an interruption to the mains
power supply, the system lock will
need to re-activated.
Cancelling the system lock
 To cancel the system lock, touch OK
for a few seconds until an audible
tone sounds.
The  symbol will go out.
Operation
31