Pre-cleaning of plates is in almost all cases a simple high-pressure water cleaning, where all loose scaling and fouling will be removed.
Some scaling is of a very hard nature and requires time in our acid or caustic solution.
A carefully selected cleaning solution will be used to assure the quickest possible cleaning. Different temperatures, agitation, and concentrations will be utilized to assure maximum cleaning efficiency. It is not always possible to reach the required result by using one cleaning solution. Sometimes hours in a agitated acid solution has to be followed by hours or even days in a high temperature caustic solution.