• RVGO bucket-type coarse cleaning screens (1), which captures large impurities, with gap of 20-35 mm;
• Fine cleaning gratings ERPE with an endless stepped perforated screen (2), catching fine dirt, gap of 2-6 mm.

Waste can be discharged from the ERPE and RVGO screens either into conveyors (3), or directly into squeezing press, or into container. ERPE grid is equipped with system of periodic washing of filter screen, water from which enters conveyor together with the waste, therefore, when using conveyor. Press must be installed after it to dehydrate the waste. When installing a common conveyor under more than three ERPE screens, it is recommended to equip it with an additional water drainage section.