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ERO335 MAINTENANCE
To keep the RO water system operating and making high quality water, the RO, prefilter, and postfilter
cartridges need replacement at regular intervals. Depending on water supply quality, the prefilter and postfilter
cartridges may last for 6 months to 1 year. RO cartridge life normally ranges between 36 and 60 months.
This reverse osmosis system contains a replaceable
treatment component critical for effective reduction
of total dissolved solids (TDS). The water should be
tested periodically to verify the system is performing
satisfactorily.
Prefilter Cartridge:
You must replace the prefilter
cartridge often
to protect the RO membrane from
being destroyed by chlorine,
and/or from plugging
with sediments in your water supply. If the water
supply contains both chlorine and sediments,
replace the prefilter cartridge at least every 6 - 12
months. Replace more often than 6 months if it
begins to plug with sediments.
If the water has sediments only, with no chlorine,
you may notice a slower making of product water as
the prefilter collects the sediments. When this
occurs, replacement is needed to restore full flow.
Postfiliter Cartridge:
The carbon postfilter removes
any
remaining taste and/or odors from the product
water before it goes to the RO faucet. Replace the
cartridge when the taste and/or odor returns in the
RO water, typically every 6 to 12 months.
RO Membrane Cartridge:
The life of the RO
cartridge depends mostly on properly treated supply
water and regular maintenance of the prefilter
cartridge. The membrane has a self-cleaning feature
that, under typical conditions, extends life to
between 18 and 36 months. Replacement of the RO
cartridge is made when testing indicates TDS
rejection is not within specifications. Product water
may begin to taste different or bad, indicating solids
and organics are passing through the RO
membrane. To be sure it is the RO cartridge, always
replace the prefilter and postfilter cartridges first.
