Self Cleaning Filters Model E With Piston Operated Scanner
Minimum operating pressure: 14.5 psi
Maximum operating pressure: 145 psi
Clean filter pressure loss: 1.45 psi
Maximum water temperature: 149ºF
Filtration range Model E: 50 – 3000 micron
Filtration range Model EC: 400 – 3000 micron
Electric motor: 3-phase 0.5 Hp
Flush water consumption (at minimum working pressure): 18.5 gallons
Filter housing materials: carbon steel coated with baked on epoxy
Filtration Water enters the filter through the "Inlet" (1) and passes through the coarse screen (2) that functions as a "fist stop" for rough particles. Water then reaches the fine screen (3), which further purifies the flow by separating smaller particles from the water. As more water flows through, impurities build up on the fine screen. As impurities on the screen accumulate, a pressure imbalance is built up between the internal screen of the fine screen (3) and its external section.
Operation Information for Model EC Self Cleaning Electric Screen Filter The process is the same as the above however there is no pre-filtration with a coarse screen (2) as the filtration grade is 400 – 3000 microns.
Cleaning Process When the difference in pressure reaches the preset value on the differential pressure indicator, a series of events is triggered while water continues to flow to the systems units. The controller transmits a signal for a 10 second flushing cycle. The flushing valve (4) opens, pressure is released from the hydraulic piston (5) and water flows outside. Pressure in the hydraulic chamber (6) and the dirt collector (7) is significantly lowered resulting in a suction process via the suction nozzles (8) to the dirt collector and from there to the hydraulic chamber through the flushing valve (4) outside. The electric motor (9) simultaneously rotates the dirt collector (7) around its axis. The pressure is released from the piston (5) and the high pressure inside the filter causes linear movement of the dirt collector. The combination of the linear movement and rotation efficiently cleans the entire internal screen (3) surface.
At the end of the 10 second cycle the flushing valve (4) closes and the operation of the electric motor(9) is stopped. The increased water pressure returns the hydraulic piston (5) to its initial position. The filter is now ready for the next cycle, with clean and filtered water flowing through the "Outlet" (10).
The 10 second flushing cycle resumes operation whenever the difference in pressure reaches the preset pressure value set on the differential pressure indicator. If the pressure difference remains unchanged after one cycle, another cycle will start after a delay of 10 seconds.
Special Options and Features of Self Cleaning Filters
High Pressure Rating psi: 232, 352, 580
Electric Current: 110V, 220V, 3 phase, single phase, 24V and solar energy
High Temperature Range: Withstands temperatures up to 203ºF
Anti Frost: Special control system for cold climate conditions
Stainless Steel Grades: 304 and 316
Available Controls: Electronic, timer, air-actuated, computerized and custom designed
Special Coating – Prevents deterioration from exposure to sale/sea water
Sectors Served Self Cleaning Filters are used in a wide range of applications in the Agricultural, Industrial, Municipal and Commercial sectors. The main industries include: steel mills, petroleum, plastics, chemicals, electronics, textile, paper mills, food, beverage and power stations.
Typical applications of Self Cleaning Filters include: cooling towers, heat exchanger protection, ion exchange protection, industrial wastewater recycling, effluent polishing water supply and filtration for micro irrigation.
