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12 User settings
Mains synchronisation
Mains synchronisation synchronises the appliance clock with the mains fre-
quency. Irregular mains frequency can cause the clock to not run correctly. A
pulse generator inside the appliance is used when mains synchronisation is
switched off.
12.7 Notifications
Acoustic signals and instruction messages can be switched off or disabled.
12.8 Descaling the appliance
This function can be used to descale the appliance or read the remaining op-
erating time until the next descaling process.
See Descaling (see page 89).
12.9 Water hardness
The appliance features a system that automatically indicates when it is time to
descale. The system can be optimised for households with soft water (also
through using a water softening appliance) and medium water hardness by
changing the user settings to the relevant range of water hardness.
There are three settings for water hardness:
Type Water hardness
[°fH]
Water hardness
[°dH]
Water hardness
[°eH]
▪ Hard
36 to 50 21 to 28 26 to 35
▪ Medium
16 to 35 9 to 20 12 to 25
▪ Soft
1 to 15 1 to 8 1 to 11
12.10 Volume
The acoustic signal can be set at one of two levels of loudness or can be
completely switched off.
An acoustic signal is emitted in the event of a malfunction even if the
setting is set to «off».
A short acoustic signal is emitted when the appliance is switched off
even if the setting is set to «off» (safety function).
81
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