Written by Thamara

How do I descale the Senseo Latte Duo?

If the CALC light on your Senseo Latte Duo lights up, it is time to descale the machine. A complete descaling process consists of 1 treatment with descaler and 3 rinses with clean water. In total you are doing this for about an hour. In this article I explain how you do this step by step.

What you need

Descale Senseo Latte Duo
  • Sachet Senseo descaler or 50 grams citric acid powder
  • sump with a capacity of at least 1.5 liters
  • Measuring cup
  • Used coffee pad


  1. Mix 1 liter of water in a measuring cup with a sieve of Senseo descaler or 50 grams of citric acid.

  2. Stir until the powder is completely dissolved in the water.

  3. Pour the mixture into the water reservoir and place it back on the machine.

  4. Turn the Latte Duo on by pressing the on / off button. The machine starts warming up.

  5. Place the 1-cup pod holder in the machine and place a used coffee pad here.

  6. Remove the drip tray and place a drip tray of at least 1.5 liters under the coffee and milk spout.

  7. Make sure the coffee and milk spout remains in place.

  8. If the on / off button remains lit constantly, the machine has warmed up sufficiently.

  9. Press the CALC button until you hear a beep twice. The machine now starts descaling.

  10. The mixture is taken out of the water reservoir and comes out of the machine at intervals. This process takes about 45 minutes.

  11. After this process, the machine will let the remaining descaling mixture run out of the spout for 7 minutes.

  12. When the water tank is empty, the on / off button will blink and the machine has finished descaling.

  13. Remove the used coffee pad.

  14. Empty the drip tray and place it back under the coffee and milk spout.


  1. Rinse the water tank and fill it to the MAX indication with clean water.

  2. Put the reservoir back on the machine.

  3. Briefly press the CALC button to start rinsing. The clean water flows continuously through the machine into the container.

  4. Now repeat steps 14 to 17 twice to perform the 2nd and 3rd rinse.

  5. When the 3rd rinse is complete, the machine switches itself off automatically.

Article by:
Thamara Coffee Machine Expert.

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