WMF BUENO Serie Instrucciones De Uso página 11

Decalcifying
Limescale and calcium deposits result in a loss of energy and impair
the service life of the appliance. The appliance will switch off prema-
turely if the deposit is too excessive. It is then very difficult to remove
the deposit. We therefore recommend you to decalcify the appliance
regularly, but at the latest when the brewing time increases signifi-
cantly or there is more noise during the brewing process.
The following values are offered for guidance and are based on daily
use in a household.
Hardness range Hardness
1 soft 0 - 7° dH
2 medium >7- 14° dH
3 hard >14 - 21° dH
4 very hard >21° dH
1° dH corresponds to approximately 0.18 mmol/l Ca and Mg ions
You can ask the responsible waterworks or community administra-
tion about how hard the water is in the region where you live. We
recommend using durgol® universal. It is highly effective and gentle
on material with no additional acting time.
You can find it where you purchased the unit, in select specialist
trade, or order it directly from wmf consumer electric.
To remove lime, place a paper filter in the unit and set the pitcher into
the unit. Any more substantial amounts of limescale residue collect on
the filter paper and thus prevent the spout becoming clogged. Pour
1-2 cups of durgol® universal into the water tank and fill up with tap
water to the 10-cup mark. Turn the unit on using the on/off switch to
start the lime removal process.
Then rinse by running through a full tank of tap water.
Absolutely do not use vinegar or vinegar essence, since this may
damage materials in the unit.
When using citric acid based lime removers, lime removal may lead to
the formation of deposits which seal the lime coating or plug the lines
in the unit. Lime removal with citric acid is also too slow – complete
lime removal can therefore not be guaranteed.
Attention, there are no guarantee claims for damage caused by non-
compliance with the lime removal instructions.
Decalcification
every 6 months
every 3 months
every 6 weeks
every 4 weeks
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