Before heating after the shutdown, the overhaul and maintenance of the heat station supporting plate heat exchanger is a key task. During maintenance, removable ones need to be removed from the plates and descaled for cleaning. There are some cleaning and maintenance methods that can share the experience with you.

Generally speaking, the heat station supporting plate heat exchanger heat supply operation for five to six months. The working medium is softened water, with a maximum temperature of 140. although softened water, but can not avoid the scale attached to the plate. If the scale is high, it will not only affect the heat transfer effect, but also cause damage to the plate. Therefore, during maintenance, the plates must be disassembled and descaled.

Check the scale condition of the plate sheet. If the scale is golden yellow and the scale is serious, it is not easy to clean just with physical cleaning and must be cleaned with chemical cleaning; if the scale is uneven and yellow, physical cleaning can be considered. The method is as follows: chemical cleaning steps: soak with 5% safe descaling cleaning solution for 15 hours to ensure soaking time. If it is too short, the scale removal is not complete, if it is too long, it affects the service life of the plate. Then take out the soaked plate and clean it with a soft brush, while rinsing with water. Physical cleaning steps: Firstly, according to the degree of scale, choose a high-pressure water gun with suitable pressure, and rinse with the water gun along the grain of the plate repeatedly to ensure that the stubborn scale is washed away. When using the high-pressure water gun, strictly observe the safety operation specification of the high-pressure water gun. Then lift the high-pressure water gun washed plate to two high and low chairs, one with water and one with a soft brush to scrub the remaining scale.

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