WMF Coup AromaOne Mode D'emploi page 21

Scaling indicator
Scale deposits result in an extended brewing time and lower quality coffee.
Limescale deposits also lead to energy losses and impair the service life of the
appliance.
The automatic scaling indicator determines the time for the next descaling cycle.
Depending on the coffee consumption, the On/Off button (5) will flash blue/
white to prompt you to descale the appliance after 4 to 6 weeks.
Descaling - Anti-limescale program
Descaling agent
We recommend using Cromargol®. This product is highly effective, food safe and
is neutral in taste and smell. Thanks to its special care formula with six high-
quality and protective additives, Cromargol® is also very gentle on materials.
You can usually purchase Cromargol® from the store where you purchased your
appliance or from your chosen dealer.
You can also use a commercially available descaling agent that is suitable for
filter coffee machines.
Do not use vinegar or vinegar concentrate, as this can damage materials in
the appliance.
When using descalers based on citric acids, precipitates could form during
descaling that seal the limescale layer or clog the lines in the appliance. Descaling
with citric acids also takes too long, and therefore complete descaling cannot be
guaranteed.
Damage caused by the use of an unsuitable descaling agent or through non-
compliance with the descaling instructions is not covered by our warranty claim.
Handle the descaling agent carefully to ensure that no furniture or clothing
is damaged.
Descaling programme
Your coffee machine has an automatic descaling programme.
Note: Once the descaling programme has started you must not interrupt
it. This is for the safety of all users. It prevents coffee from being brewed
accidentally while the descaling solution has not yet
been fully rinsed away. In case of emergency, you can interrupt
the descaling programme by pressing the On/Off button (5). In this case you
should
rinse out the water tank (3) and then perform a rinse cycle (see "Rinse cycle"
section).
▪ Connect the mains plug to an earthed wall socket and press the On/Off button
(5) to switch the appliance on.
▪ Insert the paper filter and place the Aroma glass jug (4) in the machine. Any
more substantial amounts of limescale residue collect on the filter paper and
thus prevent the outlet valve from clogging.
▪ Fill the water tank (3) with one portion (100 ml) of Cromargol® and fill with
tap water up to the MAX marker.
Note: The descaling programme can only be started if there is enough water
in the water tank (3) for 4 cups; the start buttons (6–9) must light up.
▪ Dose other descaling agents according to the manufacturer's instructions.
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