1. Fill the kettle with white vinegar up to one quarter of the MAX indicator.
2. Add water up to the MAX indicator.
3. Press the green tea button (Image 1) to heat up the water to 80˚C and then press the KEEP WARM button.
4. Empty the kettle after 30 minutes and rinse the inside thoroughly.
5. Repeat the descaling procedure if there is still some scale in the kettle.