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Pentair PRF-RO Manuel D'installation Et De Maintenance page 15

Systeme d'osmose inverse

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4 - TO CARE FOR THE RO SYSTEM
The components of the RO system are designed to function with minimal maintenance. However, the
membrane elements and filters will need to be replaced on a regular schedule.
For optimal performance the system should be flushed for 2 minutes if periods of inactivity extend past six
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hours.
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Replacement of prefilter and postfilter
The carbon/sediment prefilter reduces sediment and certain chemicals, such as chlorine, from the water.
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Depending on water use and the amount of impurities, this filter should be replaced every six to twelve
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months for point-of-use applications.
Whenever the prefilter is replaced, the postfilter should also be replaced.
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Installations using more than 75,7 liter (20 gallons) product water per day should install external filters (not
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supplied) to reduce chlorine and sediment larger than 10 microns.
Replacement of RO membrane elements
The functional life of the RO membrane elements will vary based on feed water quality. Product water
should be tested periodically to verify the membrane elements are performing properly. For most point-of-
use applications, the RO membrane elements should be replaced every two to four years.
NOTE: Softened water is recommended for optimal system performance and RO membrane element life.
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