WMF Aroma Thermo Stelio Drip Coffee Maker

1. Important Safety Instructions

Please read these instructions carefully before using the appliance and keep them for future reference. Incorrect operation can lead to personal injury and appliance damage.

• This appliance is intended for household use only.
• Do not immerse the appliance, power cord, or plug in water or other liquids.
• Always supervise the appliance when in use, especially when children are present.
• Do not operate the appliance if the power cord or plug is damaged, or if the appliance malfunctions or has been damaged in any way. Contact authorized service personnel.
• Avoid contact with hot surfaces. Use handles and knobs.
• Unplug the appliance from the outlet when not in use and before cleaning. Allow it to cool before adding or removing parts.
• Do not use accessories not recommended by the manufacturer.
• Ensure the appliance is placed on a stable, level surface, away from the edge of the countertop.
• Do not place the appliance on or near a hot gas or electric burner, or in a heated oven.

2. Product Overview

The WMF Aroma Thermo Stelio Drip Coffee Maker is designed for convenient and efficient coffee brewing. It features a durable Cromargan 18/10 stainless steel exterior and a thermal carafe to keep your coffee warm.

Figure 2.1: Full view of the WMF Aroma Thermo Stelio Drip Coffee Maker. This image displays the complete coffee maker, including the water reservoir, filter basket housing, and the thermal carafe.

Components:

• Water Reservoir: Located at the back, with a clear water level indicator.
• Lid: Covers the water reservoir and filter basket.
• Filter Basket: Removable basket for ground coffee.
• Thermal Carafe: Stainless steel carafe with a capacity of 1 liter (approximately 10 cups).
• Drip Stop Mechanism: Prevents dripping when the carafe is removed.
• On/Off Switch: Illuminated power button.

Figure 2.2: Close-up view of the open filter basket. This shows the removable filter holder where ground coffee is placed.

Figure 2.3: The thermal carafe. This stainless steel carafe is designed to keep coffee warm for extended periods.

3. Setup

1. Unpack: Carefully remove all packaging materials and dispose of them responsibly.
2. Initial Cleaning: Before first use, clean all removable parts (carafe, filter basket) with warm soapy water. Wipe the exterior of the appliance with a damp cloth. Run the coffee maker with only water (no coffee) for one or two cycles to rinse the internal components.
3. Placement: Place the coffee maker on a dry, stable, and level surface. Ensure there is adequate ventilation around the appliance.
4. Power Connection: Plug the power cord into a suitable 240V electrical outlet.

4. Operating Instructions

Brewing Coffee:

1. Fill Water Reservoir: Open the lid and fill the water reservoir with fresh, cold water. Use the water level indicator on the side of the machine to measure the desired number of cups. Do not exceed the maximum fill line.

Figure 4.1: Water level indicator. This transparent strip on the side of the coffee maker shows the water volume in cups.
2. Add Coffee Grounds: Place a paper filter (size 1x4 or equivalent) into the removable filter basket. Add your desired amount of ground coffee. A general guideline is one tablespoon of coffee per cup, but adjust to personal preference.
3. Close Lid: Close the lid securely. Ensure the filter basket is properly seated.
4. Place Carafe: Ensure the thermal carafe is correctly positioned on the warming plate. The drip stop mechanism will be engaged when the carafe is in place.


Figure 4.2: Drip stop mechanism. This spring-loaded valve at the bottom of the filter basket prevents coffee from dripping when the carafe is removed.

5. Start Brewing: Press the On/Off switch. The indicator light will illuminate, and the brewing process will begin.


Figure 4.3: Illuminated power button. Press this button to start or stop the brewing cycle.

6. Serving Coffee: Once brewing is complete, the appliance will automatically switch off. Carefully remove the thermal carafe to pour coffee. The carafe's lid is designed for easy one-handed operation.

Figure 4.4: Thermal carafe lid. This image highlights the mechanism for opening and closing the carafe lid for pouring.

5. Cleaning and Maintenance

Regular cleaning ensures optimal performance and extends the lifespan of your coffee maker.

Daily Cleaning:

1. Always unplug the appliance and allow it to cool completely before cleaning.
2. Remove the used paper filter and discard coffee grounds.
3. Wash the filter basket and thermal carafe with warm, soapy water. Rinse thoroughly and dry. The Cromargan stainless steel is easy to clean.
4. Wipe the exterior of the coffee maker with a soft, damp cloth. Do not use abrasive cleaners or scouring pads.
5. Do not immerse the main unit in water or any other liquid.

Descaling:

Depending on water hardness and frequency of use, mineral deposits (limescale) can build up in your coffee maker. Descale regularly (e.g., every 2-4 months) to maintain performance.

1. Prepare a descaling solution according to the descaler manufacturer's instructions (e.g., white vinegar and water, or a commercial descaling agent).
2. Pour the descaling solution into the water reservoir.
3. Place the empty thermal carafe on the warming plate.
4. Start a brewing cycle. Allow about half of the solution to brew through, then switch off the appliance and let it stand for 15-20 minutes to allow the solution to work.
5. Switch the appliance back on and let the remaining solution brew through.
6. After descaling, run at least two full cycles with fresh, clean water to rinse out any residual descaling solution.

6. Troubleshooting

If you encounter issues with your WMF Aroma Thermo Stelio Drip Coffee Maker, refer to the following table:

7. Specifications

8. Warranty and Support

WMF products are manufactured with quality and precision. This product is covered by a manufacturer's warranty against defects in materials and workmanship under normal household use. The specific terms and duration of the warranty may vary by region. Please retain your proof of purchase for warranty claims.

For technical support, spare parts, or warranty inquiries, please contact WMF customer service through their official website or the contact information provided with your purchase documentation.