Does the device have an auto-cleaning function?
The document does not explicitly mention an 'auto-cleaning' function. However, the manual describes a filter maintenance procedure: open the service hatch, extract the filter by turning it counter-clockwise, remove impurities, then replace the filter.
How to perform the maintenance of the device filter?
Open the service hatch and extract the filter by turning it counter-clockwise. Clear any impurities or debris from the filter before placing it back into its original position.
Does the device have an auto-cleaning function and how is the filter maintained?
The manual does not specify an automatic cleaning function, but the filter should be maintained by opening the service hatch, turning the filter counter-clockwise to remove it, cleaning out impurities, and reinstalling it.