High Performance Precision Scanning
Rain Bird’s IME-Series Suction Scanning Screen Filter provides worry free high-flow rate filtered water quality. Powered by source line water pressure and an electrical drive motor, the filter’s backwash system produces a concentrated high velocity reverse water flow to precisely clean the screen of any entrapped contaminants. Unique to this design, Rain Bird has eliminated potentially troublesome limit switches (for reversing the drive mechanism) and implemented a reversing mechanism that is simple and higher in reliability than other units on the market today. Models are available as a filter unit only, or as a filter assembly including bypass plumbing and valves for fast and easy installation on site.
The unit consists of two stainless steel stages of filtration, a coarse pre-filter and a fine screen. The fine screen presents a positive barrier to all particles larger than the openings in the screen. The unwanted solids accumulate on the inner surface of the fine screen, building up a filter cake which filters out even finer particles, creating a pressure differential.
Once this pressure differential reaches a preset level, a rinse cycle is activated by the factory supplied control system. The rinse valve is opened to atmosphere dropping the pressure in the backwash chamber and dirt collector assembly. The pressure drop creates a backflush stream at each nozzle that aggressively sucks the dirt off the screen, similar to a vacuum cleaner.
The backwash water and debris is carried through the collector and ejected out the rinse valve to a drain. At the same time, the drive assembly rotates the dirt collector at a constant low speed and moves it linearly at a fixed rate, ensuring that the nozzles sweep the entire screen surface for 100% cleaning. The process takes a matter of seconds without interrupting system flow.
The standard Rain Bird control system consists of a programmable logic controller, a differential pressure switch, electric drive motor, and a solenoid actuated flush valve. The differential pressure switch monitors inlet and outlet pressures and comes factory preset to 7 psi. The housing mounted solenoid actuated flush valve and electric drive motor are activated by the controller when the differential pressure exceeds 7 psi. The filtration system is automatically monitored and controlled either on elapsed time since the last cleaning cycle or pressure differential (user definable). If timed cleaning cycles are utilized, the system will automatically default to a backwash based on differential pressure if a 7 psi differential pressure is reached before the next timed cleaning cycle. Standard Rain Bird automatic controls are available for 115 VAC and 230 VAC, 50 / 60 Hz (user-configurable) single phase power.
Rain Bird IME-Series filters are built for years of durable, trouble-free service. The housing and covers of standard filters are made from thick wall high-grade, low-carbon steel. All exposed surfaces, both inside and out, are polyester powder coated over a zinc phosphate primer coat. Easy maintenance access to the the internal components of the filter is through a removable front cover with handles that is secured to the front end of the filter housing. All wetted components are constructed of either engineered plastics or non-corrosive metals. All Rain Bird IME-Series filters are also available in Stainless Steel construction, for the most demanding water quality applications.
|Model Number||Flange Size (in.)||Max. Flow Rate (gpm)||Open Screen Area