Coffee Preparation; Cleaning And Care - WMF STELIO Aroma Instrucciones De Uso

Start-up
Prior to the initial use and after the device has not been used for an extended period
of time, carry out a brewing process with fresh water and no ground coffee. To do
so, fill the tank (4) to the 8-cup mark (version with glass jug) or to the 6-cup mark
(version with vacuum jug), as otherwise the jug (7) can overflow.

Coffee preparation

Open the water tank (4). To do so, swing open the lid (3) upward. Only pour cold
water into the tank (4). The water level indicator (5) is for the amount of fresh water
that is needed to brew the desired number of cups per 125 ml of coffee.
Open the filter (2) by swinging open the filter lid (1) upward. Place the paper filter
of the 1 x 4 size into the filter (2), but fold the stamped edge before doing so. The
paper filter should not protrude over the edge of the filter, which is why it should be
pushed down slightly with your hand.
Fill with the required amount of ground coffee. Depending on personal taste prefer-
ences, approximately 5-7 g of medium-fine ground coffee is estimated per cup. If it
is ground too finely, the filter (2) may overflow.
Then close the filter lid (1). It will audibly click into place.
Insert the mains plug into the socket and push the Start / Stop button (6). This
illuminates blue and the preparation begins.
You can cancel the preparation at any time by pressing the Start / Stop button (6)
again.
Wait a few minutes until all of the coffee has run into the jug (7). After removing
the jug (7), a drip-stop valve prevents coffee from dripping.
Keep-warm function
(only version with glass jug)
In order to keep the finished brewed coffee at a serving temperature, your device
is equipped with a keep-warm function. After the preparation is complete, the
keep-warm function activates automatically and the Start / Stop button (6) remains
illuminated blue. The keep-warm time is 40 minutes. Then the device automatically
switches off and the Start / Stop button (6) turns off.
You can deactivate the keep-warm function at any time by pressing the Start / Stop
button (6).
Automatic shut-off
(only version with vacuum jug)
After being switched on, the automatic shut-off ensures that the device does not
overheat. Only once the water has completely passed through does the device switch
off and the Start / Stop button (6) is no longer illuminated.
It is possible to shut off the coffee maker early by pressing the Start / Stop button
(6). This could be necessary if you accidentally start the coffee machine without
water. It is necessary to wait for a few minutes before you add more water into the
hot device. Allow the coffee machine to cool beforehand.
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Information about the Cromargan® vacuum jug
(only version with vacuum jug)
The jug is designed as a serving jug and best keeps the content warm when it is full.
When filled partially and for residual amounts, the keep-warm time can be reduced
substantially. It is best if the jug is rinsed with hot water prior to preparing the
coffee.
The seal made by the drip-through lid is not 100% sealed due to technical reasons so
that it is still easy to open, even after the coffee has cooled down. To close, simply
slightly tighten the lid. The filled jug can only be used upright.
To pour, press the pouring button on the handle.
To open the jug, turn the lid slightly counter-clockwise. After closing the lid, ensure
that the pouring button is again over the handle of the jug.
The double-walled Cromargan® jug is absolutely break-proof. Nevertheless, it should
be protected against mechanical stresses.
Rinse the jug regularly. If iron particles from water accumulate on the Cromargan®
surface, they can create pitting at those points. Therefore, remove these deposits
immediately with a stainless steel cleaning agent.

Cleaning and care

Cleaning
Disconnect the mains plug and allow the appliance to cool down.
Do not immerse the device in water, but rather only wipe the outside with a damp
cloth to which some washing-up liquid has been added.
Do not use any harsh and abrasive cleaning agents.
The filter (2), glass jug (7) and vacuum jug (7) are cleaned under running water.
Calcification
Calcium deposits lead to a longer brewing time and a lower quality of your coffee.
In addition, calcium deposits lead to energy losses and affect the service life of the
device.
It switches off prematurely if the limescale layer is too thick. It is then only possible
to remove with great difficulty. You should therefore descale regularly, at the latest
however in the event of significantly longer brewing times or increased noise.
The following data are guide values that refer to a daily use in the household.
Hardness range Hardness Descaling intervals
1 soft 0 - 7° dH Every 6 months
2 medium >7- 14° dH Every 3 months
3 hard >14 - 21° dH Every 6 weeks
4 very hard >21° dH Monthly
1° dH corresponds to approximately 0.18 mmol/l Ca and Mg ions
You can inquire at your local water company or government to find out the hardness
range in your neighbourhood.
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