Its function is to protect the motor of the vacuum cleaner from moisture and dust, as well as to protect the HEPA filter from moisture.
The position of this filter over the HEPA filter in the XT/XS/PA series noticeably extends the life time of the HEPA filter.
It is recommended to rinse hygiene guard filter under running water and dry it after each cleaning.
The manufacturer recommends to change the filter every year.
