Recycling System: Dirty water is pump by the roll round pump, throght the 1st filter, which seperates bigger particles, to the 2nd cyclone filter, where the dirty water is cleaned. Contaminated water and its particles, is led back to the sludge chamber, at the exit side of the dirty water. There will be also a activating valve can maintains the constant pressure in the 2nd cyclone filter. At the end, cleaned water is transported to the clean water chamber for jetting purposes. The filtering is effected by rotating slot screen drum. A scraper system keeps the drum free of clogging.