The Senseo Coffee Maker, which is manufactured by Phillips, brews coffee in a different way than many commercial coffee makers. Instead of a traditional filter and basket, the Senseo uses pods that hold precisely measured amounts of coffee. In order to keep the unit working at maximum efficiency, it must be descaled every three to six months. This process involves using special cleaning agent, in this case citric acid, to remove any build-up from the unit.
Pour one litre water into a plastic container.
Pour approximately three and one half tbsp powdered citric acid into the container. Stir the mixture until the citric acid is completely dissolved.
Add the descaling mixture to the water reservoir until the MAX fill line is reached.
Place a medium sized bowl, or one that can hold at least 798ml of liquid, under the coffee outlet. This will collect the citric acid mixture.
Turn the unit on and press the buttons that contain one coffee cup symbol and two coffee cups symbols at the same time to begin the descaling process.
Allow the machine to sit for 30 minutes and repeat the descaling process again.
Fill the water reservoir to the MAX fill line with fresh tap water. Press the buttons that contain one coffee cup symbol and two coffee cup symbols at the same time. This will rinse out any remaining descaling mixture from the unit.
Repeat the rinsing procedure a second time.