DUPONT FILMTEC RO-4040-FF Membrane

DUPONT FILMTEC RO-4040-FF reverse osmosis membrane elements deliver high flux and exceptional quality water for applications requiring sanitary grade membrane elements. The full-fit configuration minimizes stagnant areas and is an ideal choice for applications requiring a sanitary design. All components comply with U.S. Food & Drug Administration standards.

Advantages

• High flux rates
• Full-fit design
• Consistent quality from automated rolling
• FilmTec performance and quality

Important Information

Proper start-up of reverse osmosis water treatment systems is essential to prepare the membranes for operating service and to prevent membrane damage due to overfeeding or hydraulic shock. Following the proper start-up sequence also helps ensure that system operating parameters conform to design specifications so that system water quality and productivity goals can be achieved. Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed. Please refer to the application information literature entitled “Start-Up Sequence (Form No. 609-00298) for more information.

Operation Guidelines
Avoid any abrupt pressure or cross-flow variations on the spiral elements during start-up, shutdown, cleaning or other sequences to prevent possible membrane damage. During start-up, a gradual change from a standstill to operating state is recommended as follows:

• Feed pressure should be increased gradually over a 30-60 second time frame.
• Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
• Permeate obtained from first hour of operation should be discarded.

General Information

• Keep elements moist at all times after initial wetting.
• If operating limits and guidelines given in this bulletin are not strictly followed, the limitedwarranty will be null and void.
• To prevent biological growth during prolonged system shutdowns, it is recommended thatmembrane elements be immersed in a preservative solution.
• The customer is fully responsible for the effects of incompatible chemicals and lubricantson elements.
• Maximum pressure drop across an entire pressure vessel (housing) is 60 psi (4.1 bar).
• Avoid permeate-side backpressure at all times.