From time to time, the iron should be cleaned of scale. If this is not done, then the steam will come out worse and will contaminate things.
It is very easy to clean the iron by hand if there is no special function. Plaque must be dealt with, if only because it can spoil things during ironing. Limescale build-up often leaves dirty stains on the items you iron.
To clean the iron, it is enough to pour ordinary mineral water into it. Then you need to turn on the iron at maximum power and turn on the mode of automatic cleaning of the tank.
If there is no such mode, then after waiting for the iron to heat up, switch the regulator to the maximum steam supply and press the steam supply button. It is desirable to do this over a rag, so that it is more convenient to collect dirt. The scale will fall off in pieces.