During what condition should the membrane cleaning with citric acid be performed?

Membrane cleaning with citric acid should be performed when there are signs of scaling. Scaling typically occurs when mineral deposits accumulate on the membrane surface, impacting its efficiency and performance. When scaling is detected, it is crucial to use citric acid because it effectively dissolves these mineral deposits, restoring the membrane's functionality and prolonging its service life.

Regular maintenance intervals, such as monthly cleaning or after backwashing, may not address the urgent need for cleaning that arises specifically from scaling. Waiting for an established schedule could lead to a significant decrease in system performance if scaling is present and untreated. Therefore, cleaning when scaling is evident is a proactive approach to maintaining optimal operation in water and fuel systems.