How to disassemble and repair a bathroom faucet with a Kran therm Termostatic cartridge maintenance

The battery requires cleaning from time to time. The scale prevents smooth regulation of the water temperature.
Currently, I bought the entire battery cheaper than the thermostat itself on the Allegro. See here: https://s.click.aliexpress.com/e/_AAsA4U
See also my other films:
https://www.youtube.com/watch?v=boGxWnmJu7M&t=4s
https://www.youtube.com/watch?v=gKgu-cKBstA
https://www.youtube.com/watch?v=iSFjk_pK94Q&t=25s
https://www.youtube.com/watch?v=oqqDZifFcpY&t=25s
https://www.youtube.com/watch?v=yYLXYE6QBx8&t=14s

Видео How to disassemble and repair a bathroom faucet with a Kran therm Termostatic cartridge maintenance канала Moto Serwis