Installation Guide

ChecktheTDSlevelatleastonceamonthtomonitorthesystem’sperformance.TheTDSrejection
rateshouldbe90%+.Tocalculatetherejectionrate,dividetheROwaterTDSintoyourtapwaterTDS
andsubtractfrom1.Forexample,20(ROTDS)/200(TapwaterTDS)=0.110.1=0.9sotheTDS
rejectionratewouldbe90%.(NSF/ASINSTANDARD58forROwaterfilter).
HowtoChangetheReverseOsmosisMembrane

Figure11

Figure12
1. TheROmembranetypicallylastsabout2–3years.Themembranelifespandependsonthe
sourcewaterquality,yourwaterusage,andhowoftenthethreeprefiltersarereplaced.To
ensurethesystem’sperformanceandwaterpurity,itisimportanttoreplacetheprefilter
cartridgesonschedule.UseaTDSmetertoperiodicallytochecktheROwaterpurity.
2. Shutoffthecoldwatersupplyvalveandtankvalve,andopentheROfaucettodepressurizethe
system.Placeabucketortowelunderthesystemtocatchanywaterspills.
3. Removethetubingfromthequickconnectfittingonthemembranehousingcap.Usethe
membranehousingwrenchtotwistoffthehousingcapinacounterclockwisedirection.
4. Pullouttheoldmembrane.Usescissorsorplierstoapplyleverageifnecessary.
5. Cleanthemembranehousingusinghotwaterandscentfreedishsoap(optional).Rinse
thoroughly.
6. CutopenthesmallendofthevacuumsealedpackagingcontainingthenewROmembrane.
Holdthenewmembranethroughthepackaging,andinsertitintothehousingwithouttouching
themembanewithyourbarehandstoavoidcontaminationofthemembrane.
7. MakesuretheOringisproperlyseatedontheendofthemembranehousingasshowninthe
previousimages.WerecommendreplacingtheOringevery3yearstopreventleakingdueto
anexpiredordriedoutOring.
8. Placethemembranehousingcapbackonandhandtightenit,thenusethehousingwrenchto
tightenitanother¼½ofaturn.Donotovertighten.

Stage5FT15InlinePostCarbonFilterandStage6InlineAlkalineFilter
(ifyoursystemhasone):ReplacetheFT15every12monthsandtheAlkalinefilterevery6months
1. RemoveallquickconnecttubingconnectionsfromtheFT15PostCarbonFilter.
2. UnscrewthefittingsfrombothendsoftheoldPostCarbonFilter.Wrapthethreadofeachfitting23times
withTeflontape,andscrewthemintotheirrespectivesidesonthenewPostCarbonFilter.
3. ReconnectthequickconnecttubingconnectionstothenewPostCarbonFilter.

PreFilterandMembraneHousingORings:Replaceevery3years
TopreventpossibleleakingduetoanexpiredOring.
Thepackagecomeswith3spareOringsfortheprefilterhousings,and1spareOringforthemembranehousing.
Savethemwiththismanualforfutureuse.
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