Miele DA 424 V Operating And Installation Instructions page 16

Use
Reading the filter operating hours
counter
To check the percentage of time set
already used:
^ Press the On/Off touch control to
switch the fan on.
^ Press and hold the grease filter touch
control.
One or more of the indicator lamps for
the – / + touch controls will flash.
The number of flashing lamps shows
the percentage of the operating time
which has already been used up.
1 lamp = 25 %
2 lamps = 50 %
3 lamps = 75 %
4 lamps = 100 %
The number of operating hours used
remains in the memory, even when the
appliance is switched off or there is a
power cut.
16
Altering the grease filter operating
hours counter
You can set the operating hours
counter to suit the type of cooking you
do.
– Select a short time if you roast or fry
a lot.
– If you use very little fat for cooking,
select a longer time.
– If you only cook occasionally we
recommend that you still select a
short time, because grease which
has built up gradually over a long
period of time will harden on the
grease filter and make cleaning more
difficult.
The operating hours counter for the
grease filter is set at 30 hours. The time
set can be lengthened or shortened:
you can choose 20, 30, 40 or 50 hours.
^ Press the On/Off touch control to
switch the fan off.
^ Press the run-on option touch control
and the grease filter touch control at
the same time.
The indicator lamp for the grease filter
touch control and one of the – / + touch
control lamps will flash.