As soon as the drive of the COB is activated, the cleaning starts in order to adjust a difference in water levels which has resulted from a build-up of screenings in the bar rack. By rope suspension on three cables the grab cleaner is lowered to the screen bars in an open position. When it reaches the channel bottom it swings into the screen bars.
During the cleaning cycle the screenings are collected, transported to the discharge position and then pushed by the scraper device into the container, conveyor belt, etc. The screenings cleaning cycle is repeated until the difference in water levels has been adjusted. The grab cleaner then returns to the parking position above the operation floor.
Passavant®
Cable Operated Bar Screen
COB
The Passavant® Cable Operated Bar Screen COB, is used for coarse or fine screening for the mechanical pre-treatment of wastewater.
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