Backwash Description

With our filtration systems, the backwash is automatically initiated through a timer or in cases of a differential pressure limit being reached.

The purpose of the backwash step is to expand the filter bed to permit the cleaning of the collected contaminants from the media by introducing water at the bottom and discharging it at the top.  Backwash water must be supplied from a source that is filtered or clean and disinfected.  The rate of flow control valve provides the rate and constant flow necessary to achieve proper backwash.  It is imperative to have the proper rate.  Normal backwash time is four minutes.

The filter will always backwash prior to shutdown to clean the collected contaminants from the media.