Due to the small flow cross-section of plate heat exchangers, blockage is prone to occur after scaling, which reduces the heat transfer efficiency of plate heat exchangers and affects the safety of equipment and the normal use of heat by users. In addition, during use, due to improper operation of water treatment equipment and inadequate water quality control, unqualified softened water is injected into the heating system, causing calcium, magnesium, and carbonate in the water to decompose into calcium carbonate and magnesium hydroxide precipitates and bond to the heating surface of the heat exchanger, forming hard scale. Due to the poor thermal conductivity of scale, the heat transfer efficiency of heat exchangers is reduced and thermal energy is seriously wasted, which affects the heating effect and causes serious negative impacts on users.

1. Strictly control the water quality during operation, and conduct rigorous water quality tests on the water in the system and the softened water in the softening tank. Only after passing the tests can it be injected into the pipeline network.

2. When the new system is put into operation, the heat exchanger should be separated from the heating system and cycled for a period of time before being integrated into the system to prevent impurities from entering the heat exchanger in the pipeline network.

3. In the heating system, in addition to regular cleaning of the dirt remover and filter, the pipe network should also be kept clean to prevent blockage of the heat exchanger.