Necessary maintenance intervals of plate type heat exchanger depending upon diversity of media used. Soft deposits on plates may be removed with circulating hot fresh water and a soft brush directly when the plate type heat exchanger is opened. To remove more stubborn deposits a high pressure clear can also be used. Care should be taken to ensure the surface of SS plates are not be damaged by cleaning. Therefore, abrasive cleaning or polishing agents and metal brushes etc should not be used.