Taf 3" 750

How the TAF Filters Work General Amiad’s TAF Series consists of easy-to-operate 2” and 3” automatic filters constructed of high quality plastic and driven by either an electrical or electronic self-cleaning mechanism. The various types of TAF screens are designed to cover a filtration degree range of 500-10 micron and flowrates up to 50 m³/h (220 gpm). The Filtering Process Water enters the inner area of the screen cylinder (1) through the filter inlet (2) and flows through the screen to the filter outlet (3). The dirt particles are trapped on the inner screen surface and form a “filtration cake” that causes a differential pressure across the screen. The Self-Cleaning Process During the self-cleaning process, while filtered water continues to flow, the filter’s Exhaust Valve (4) is opened and the Drive Unit (5) spirals the Suction Scanner (6) back and forth. The spiral rotation of the suction scanner nozzles across the inner surface of the screen vacuums the filtration cake out the exhaust valve. The Control System The control system consists of an Amiad Electronic Flushing Controller (7), a 3-way Solenoid Valve (8) that controls the filter’s exhaust valve and a Pressure Differential Switch (9) that senses the pressure differential across the screen and sends a signal to the controller when it reaches a pre-set value (usually 0.5 bar/7 psi). The controller begins a self-cleaning cycle under any of the following conditions: 1. On receiving a signal from the Pressure Differential Switch 2. On reaching a time interval parameter set by the user 3. Manual Start function at the controller keyboard Models Amiad’s TAF product-line consists of electric filters with 220/110 VAC drive unit: • 2” TAF 500 for flowrates of up to 25 m³/h (110 gpm) • 2” TAF 750 for flowrates of up to 25 m³/h (110 gpm) and higher dirt loads • 3” TAF 750 for flowrates of up to 50 m³/h (220 gpm) (8) (7) (9) (2) (5) (1) (3) (6) (4) Contact Tech.