2, check the location of the plug hole: carefully check all parts of the equipment, especially the location of piping, valves and other locations involved in the flow of liquid to determine the specific location of the plug hole.
3, clean up the plug hole: according to the different locations of the plug hole, try to use professional tools, cleaning liquid path, self-cleaning function and other ways to clean up.
4, repair or contact the supplier: If the above methods can not solve the problem of plugged holes, it is recommended to contact the supplier of the equipment or maintenance service providers, and in accordance with their recommendations for repair or replacement of related components.