The KM-series is a rear screen type automatic bar screen designed for screening wastewater. It is fully constructed from 304 stainless steel. One or two rakes move on the screen bars that are located at the rear side of the unit. It has an innovative dry chain mechanism by which the chain or sprocket does not get contact with the liquid. In addition, the use of a small output motor enables to save the electricity. It is suitable for use in a waterway where there is little change in the liquid level.