Water Hardness; Temperature - Rotel U27.25 Mode D'emploi

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4.1 Water hardness

Depending on the hardness of the water in your region your coffee machine must be
decalcified sooner or later. So that the system can show when decalcification is nec-
essary, you must first enter the correct water hardness setting before using the coffee
machine for the first time.
First test your water with the included test strip:
• Insert the strip into the water briefly and shake excess water off.
• After about one minute, you can read the result from the red dots.
• The following can be used to interpret the reading:
– 1 red dot = 1–7° dH / 1-12.6°fH = Level 1 = coffee strength button lights up
– 2 red dots = 8–14°dH / 12.7-25.2+fH = Level 2 =
coffee strength + 1-cup buttons light up
– 3 red dots = 15–21°dH / 25.3-37.8°fH = Level 3 =
coffee strength + 1-cup + 2-cups buttons light up
– 4 red dots = > 22°dH / > 37.8°fH = Level 4 =
coffee strength + 1-cup + 2-cups + steam buttons light up
☛
Set your coffee machine to level 1, if no dots turn red.
The basic factory setting is level 3.
• Turn your machine ON using the on/off button (13).
• Press the steam button (6) for about 4 sec.
• The water hardness is indicated by the number of now illuminated buttons as listed
above.
• Press the steam button (6) until the number of buttons corresponding to your water
hardness light up.
• Press the coffee strength button (3) for confirmation.
• To confirm your setting the appropriate buttons light up twice in succession.
• Programming is completed and the system is in coffee-ready mode again.

4.2 Temperature

You can change the desired temperature of the brewed coffee:
Normal
High
Maximum = coffee strength + 1-cup + 2-cups buttons light up
The factory setting is «high».
• Turn your machine ON using the on/off button (13).
• Press the 1-cup button (4) for about 4 sec.
• The buttons for the current temperature setting light up as mentioned above.
• By pressing the 1-cup button (4), the machine changes to any other temperature setting.
• For confirmation press the coffee strength button (3).
• To confirm your setting, the appropriate buttons light up twice in succession.
• Programming is completed and the system is in coffee-ready mode again.
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= coffee strength button lights up
= coffee strength + 1-cup button light up
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