Instructions / Assembly

3. Twistoffthefilterhousinginacounterclockwisedirectionwhenlookingfromthebottom.
Useahousingwrench(thebiggerone)ifnecessary.
4. RefertoInstallationStep1.1toinstallanewverticalfiltercartridgesandtwistthehousings
backon.Remembernottoovertightenoritwillbehardtoopennexttime.
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Stage4ROmembrane:Replaceevery2–3yearsorsoonerifTDSlevel
startsincreasing. 
ChecktheTDSlevelatleastonceamonthtomonitorthesystemperformance.Therejectionrate
shouldbeabove90%(NSF/ASINSTANDARD58forROwaterfilter).
Howtochangereverseosmosismembrane
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1. Reverseosmosismembraneusuallylastabout2–3years,dependingonthesourcewater
qualityandthereplacementscheduleofthethreeprefilters.
2. Toensuresystemperformanceandwaterpurity,filtercartridgesmustbereplacedonschedule.
UsetheTDSmeterperiodicallytocheckwaterpurity
3. Shutoffthewatersupplyvalveandtankvalve,openthefaucettodepressurize
4. Placeabucketortowelundertheunittocatchwaterspills.
5. Removethetubingfromtheinletfittingonthemembranehousingcap.Useahousingwrench
orbyhandtotwistoffthehousingcapinacounterclockwisedirectionlookingfrominlet.
6. Pullouttheoldmembrane.Usescissorsorplierstoapplyleverageifnecessary.
7. Cleanthehousingusinghotwaterandoptionalscentfreedishsoap.Rinsethoroughly.Cut
openthesmallendofthesealedbagofanewROmembrane,holdthenewmembranewiththe
bag,andinsertitintohousingwithouttouchingthemembanewithyourbarehand,whichmay
contaminateit.
8. ChecktheOringontheopenendofthemembranehousing.Itisrecommendedtoreplaceit
every3yearstopreventleaks.
9. Twistthemembranehousingcapbackonbyhand.Useawrenchforafinal¼turnifnecessary.
DONOTovertighten.
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Stage5FT15finecarbon:Replaceevery12months
Unscrewtheelbowfittingsonbothends,putthemonthenewcartridge,andusenewTeflonifnecessary.
Orings:Replaceevery3yearsorsoonerifleakhappensatOring.
Thepackagecomeswith3spareOringsfortheprefilterhousing,and1spareOringforthemembranehousing.
Pleasesavethemwiththismanual.
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