Miele CVA 3650 installation instructions Setting the water hardness, Soft, Medium, Hard, Very hard

Settings: Customising your machine

Setting the water hardness

For trouble-free operation of the coffee machine, and to ensure that the descaling reminder appears in the display at the appropriate time, it is important to set the water hardness level. The water hardness level indicates how much calcium is dissolved in the water. The higher the calcium content, the harder the water, and the harder the water, the more often the machine will need to be descaled.

The machine measures the amount of water which has been taken in (including the amount required for producing steam). The amount of water which the machine can use before it needs to be descaled will depend on the water hardness level set. Less water will be used in hard water areas than in soft water areas.

Your local water authority will be able to tell you the hardness of water in your area. Alternatively, you can measure the hardness yourself using the enclosed test strip:

^Dip the strip in your drinking water for approximately a second, then shake off any excess water. The result will be evident after about a minute.

If the water is harder than

40°d/7.0 mmol/l, limescale will build up more rapidy than with soft water. Descaling will need to be carried out more regularly than stated to prevent limescale damage to the machine.

The machine has four programmable levels:

–Soft:

Local water hardness level 1 0-3°d (0-0.6 mmol/l)

Water through-flow: approx. 100 l

Steam through-flow: approx. 120 min.

–Medium:

Local water hardness level 1 4-7°d (0.7-1.3 mmol/l)

Water through-flow: approx. 80 l

Steam through-flow: approx. 90 min.

–Hard:

Local water hardness level 2 7-14°d (1.3-2.5 mmol/l)

Water through-flow: approx. 60 l

Steam through-flow: approx. 60 min.

–Very hard:

Local water hardness levels 3-4

14-21°d (2.5-3.8 mmol/l) or more Water through-flow: approx. 40 l Steam through-flow: approx. 30 min.

^Select "Settings F" from the Main menu, and then touch the OK sensor.

^Use the arrow sensors to highlight "Water hardness" and then touch the OK sensor.

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