If you have been using the inhaler on a regular basis, perform a citric clean at least once every half an year to keep the electro chamber cleaned and free from scale. Refer to the user’s manual for details of performing the citric cleaning. After citric cleaning, make sure to use ONLY 100% distilled or pure water to rinse out the water tank few times so citric acids do not stay inside the machine.

How to do Citric Acids Cleaning: Click Here