Initial Operation; Coffee Preparation; Cleaning And Care - WMF Bueno Pro Gebrauchsanweisung

Initial operation

Prior to the first use and after the appliance has not been operated for an extended period of time,
carry out 2–3 boiling processes with fresh water without coffee grounds. To do this, fill the tank (4) up
to the 10-cup mark, as otherwise the jug (3) can overflow. After each brewing cycle, turn the coffee
machine off by pressing the Start/Stop button (6) and leave the appliance to cool down for 5 minutes
before you fill the tank (4) again with fresh water to the 8-cup mark.

Coffee preparation

Open the water tank (4). To do so, swing open the lid (1) upward. Only pour cold fresh water into the
tank (4). The water-level indicator (5) applies to the amount of fresh water needed to brew the desired
number of cups of coffee @ 125ml. Take a size 1x4 paper filter, fold over the stamped edge and
place it into the filter (2). The paper filter should not protrude over the edge of the filter. If necessary,
push it down slightly with your hand. Add the required amount of ground coffee. Depending on your
personal taste, use approx. 5–7 g of medium-fine ground coffee per cup. If the coffee is ground too
finely, the filter (2) may overflow. Close the lid (1). It will audibly click into place. Plug the mains plug
into the socket and push the on/off button (6). This illuminates and the preparation begins. You can
cancel brewing at any time by pressing the on/off button (6) again. Wait a few minutes until all of the
coffee has run into the jug (3). When you remove the jug (3), a drip-stop valve prevents the coffee
dripping.
Keep-warm function
(only version with glass jug)
Your appliance is equipped with a keep-warm function to maintain brewed coffee at serving
temperature. After the preparation is complete, the keep-warm function activates automatically
and the Start/Stop button (6) remains illuminated. Coffee is kept warm for 40 minutes, after which
the device automatically switches off and the light on the on/off button (6) is extinguished. You can
deactivate the keep-warm function at any time by pressing the on/off button (6).
Automatic switch-off
(only version with thermal jug)
The automatic shut-off function prevents overheating when the device is in use. The device switches
off only once all of the water has passed through the filter. It is possible to shut off the coffee maker
early by pressing the start / stop button . This could be necessary if you accidentally start the coffee
machine without water. Before filling a hot appliance, you must wait a few minutes and allow the
coffee machine to cool down.
Information about the Cromargan® thermal jug
Important: Do not use the jug to keep milk products or baby food warm due to the risk of the build-
up of bacteria. Do not heat the jug up in the microwave or the oven. Do not use the jug to store or
transport carbonated drinks. After cleaning, rinse out carefully with clean water. The jug is designed as
a serving jug and best keeps the content warm when it is full. The time the content is kept warm may
be reduced significantly if the jug is only partially filled or almost empty. It is best to rinse the jug with
hot water before preparation. For technical reasons, the seal from the brewing lid is not 100% tight
so that it can be easily opened, even after the coffee cools down. Therefore, never lie the jug down to
transport it, otherwise coffee could spill out. To close, only slightly tighten the lid. Only use the filled
jug standing upright. The double-walled Cromargan® container 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 cause pitting at those points. These deposits must
therefore be removed immediately with a stainless steel cleanser. Do not clean in the dishwasher or in
rinsing water.
Note: Stubborn deposits can be removed using soda, dishwasher granules or denture cleansing tablets.
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(only version with thermal jug)

Cleaning and care

Cleaning
Pull out the mains plug and allow the appliance to cool down. Do not immerse the appliance in water.
Outer surfaces can be cleaned using a damp cloth and a little washing-up liquid if necessary. Do not
use harsh or abrasive cleaning agents. The filter (2) and glass jug (3) are cleaned under running water.
Limescale
Limescale deposits extend brewing times and lower the quality of your coffee. They also lead to energy
losses and impair the service life of the appliance.
If too much limescale has accumulated, the appliance switches off prematurely. The limescale is then
very difficult to remove. You should therefore descale regularly or at the latest when brewing times
are significantly longer or the noise level increases.
The following specifications are guidelines based on daily use
in the home.
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 about 0.18 mmol/l Ca and Mg ions
You can ask your local water company or government about the water hardness range in your
neighbourhood.
Descaling
Please descale your appliance regularly using a high-quality commercial descaling agent. Follow the
manufacturer's instructions, particularly with regard to the subsequent cleaning with clear water,
which is essential! Suitable descaling agents contain inhibitors that protect appliances against damage
to seals and surfaces, do not cause additional deposits and have no taste. Do not use descaling agents
that are unsuitable for your appliance (such as substances based purely on vinegar or citric acid). Our
warranty does not cover damage caused by using unsuitable descaling agents or failure to follow the
descaling instructions. Please keep descaling agents out of reach of children and make sure you do not
inhale any of the steam given off during descaling.
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