Pentair PRF-RO Manuel D'installation Et De Maintenance page 17

5 - REPLACEMENT OF THE PREFILTER,
POSTFILTER, AND RO MEMBRANE ELEMENTS
10. Replace the postfilter.
a. To unlock the fittings from the tubing, push down on the collet sleeves and pull the tubing out.
b. Discard the exhausted postfilter.
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c. To prevent leaks, cut the tubing back approximately 1/4" prior to connecting the new postfilter. Make sure
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flow direction arrow aligns with water path. Reinsert tubing and collect locks.
11. Re-connect the fittings to the manifold and lock in position with locking bar.
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12. Re-position the assembly and turn the water supply on. Check the system for any leaks.
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CAUTION: When the faucet is opened, water may sputter from the air gap until the trapped air is purged.
13. Open the faucet and run water for two minutes.
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NOTE: Carbon fines may be present until the postfilter element is flushed out.
S 14. Shut off the faucet and allow the system to stand idle for 20 to 30 minutes.
15. Open the faucet and run water for five minutes.
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16. Check for any system leaks.
NOTE: If the two RO membrane elements were replaced the system must be flushed according to Step 6
the system startup procedure as stated above.
The RO system is now ready for use.
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