As soon as the operator initiates the cleaning cycle by turning the top hand wheel, a valve in the bottom of the filter unit is released and from there a vacuum is generated in the cleaning arms and jet nozzles.
The majority of the sieves surface is still able to process the contaminated water flow through its mesh surface processing clean uncontaminated water into the inner chamber of the sieve.
The suction through the jet nozzles then pulls the “cleaned” water back through the sieve pushing the contaminants off and out of the sieve’s mesh.
The offset cleaning arms are designed that with three complete turns of the top hand wheel the entire surface of the sieves mesh will be covered and then as an extra precaution, and to de-activate the cleaning cycle, the hand wheel which by then would have reached a stop is reversed with three turns to the right to ensure the best cleaning possible with the smallest wastage of water.
No chemicals or salts are used in the back washing cycle so even the “waste” water can be reclaimed for irrigation or other such usages.
Offset Point of Rotation cleaning arms travelling around the sieve mesh, sucking off contaminants.