The installed water filter at the water inlet located in front of the unit must be cleaned regularly, and especially after pipe work on the water supply system in the enterprise
If the system is operating on a partly blocked filter, the pump will be damaged. It is recommended to check the filter at least once a year and change it when needed.
When cleaning the filter - the ball valve that is installed in front of it must be closed, and the water pressure must be cut off the system by opening one of the taps. Hereafter the filter can be disassembled and cleaned.
How to clean water inlet filter
13 mm socket wrench
How to clean strainer
Pipe wrench or polygrip plier