FIELD: heat power engineering; maintenance and repair of heating systems. SUBSTANCE: internal surface of heating system is treated with chemical reagents at their multiple circulation within system. Characteristic feature of method is as follows: water solution of alkali is used as chemical reagent, then use is made of water solution of acid with inhibitor. process of cleaning is performed at temperature of 60 - 80 C. EFFECT: more efficient cleating. 14 cl, 5 dwg
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