We advise you to follow the instructions for descaling, at least every 2 to 3 weeks, even more often in areas with hard to very hard water such as Southern Europe. It may even be necessary to check for limescale every 3 to 4 days! See blog 1 for a good and a broken electrolysis unit.
If you wait too long with proper maintenance, you may have to replace the complete electrolysis unit, which is a costly affair.
Limescale removal: Unscrew the lid and remove the hose with the electrolysis unit with cell core from the tank. Disconnect the power supply, hang the hose with the electrolysis unit in a bottle filled with approx. 6 cm of cleaning vinegar or citric acid. (You can reuse this again!) After about 30 minutes, the electrolysis unit with cell core is completely clean and limescale-free. (with cleaning vinegar heated to 60 to 70 °C it goes faster!)
Put power back on the system and TIP: Check whether there is ozone production by dipping the electroysis unit with cell core in a glass of water. Now you can see it better than in the tank!
Replace the tube with the electrolysis cell back into the tank and tighten the lid again.