Basically, it is sufficient to clean and check your BWT pool robot regularly during daily use.
.
Be sure to disconnect the device from the power supply during cleaning
Clean the filters thoroughly after each use.
Check the drive system and the suction motor regularly and, if necessary, free them from impurities/foreign bodies
Unplug the floating cable at the transformer and lay it together starting from the robot. Occasionally, lay the cable out in the sun and leave it for a few hours before reassembling it
.