AOSmith AO-US-RO-4000 Manual Del Propietário página 16

Nitrate/Nitrite Test Kit:
This system is acceptable for treatment
of influent concentration of no more
than 27 mg/L nitrate and 3 mg/L nitrite in
combination measured as N.* This system
is supplied with a nitrate/nitrite test kit.
Product water should be monitored
periodically according to the instructions
provided with the test kit.
Drain Flow Restrictor
The restrictor is vital for proper operation of
RO Membrane Cartridge as it keeps water
flowing through the membrane at the
proper rate ensuring the water produced
is the best quality. It is recommended the
restrictor assembly be periodically inspected
to be sure it is clean and unrestricted.
If service is required on the drain flow
assembly, disassemble and reassemble as
outlined in Step 6.
Flow rate and output are determined
by 3 factors:
1 Incoming water temperature
2 Total dissolved solids (TDS) present
in supply water
3 Incoming water pressure
Lower temperatures are directly
proportional to slower flow rate. All
membranes are tested at 77°F. Incoming
water temperature should not exceed
90°F (32° C). The RO Filter System
should also not be installed in a location
susceptible to freezing. The more TDS in
the supply water, the more filter time is
required. Incoming TDS should not exceed
1000 ppm. Higher water pressure enables
a higher flow rate. Pressure must be above
40 psi for proper system operation. You
may consider installing a booster pump if
your pressure is below 40 psi.
CARE AND MAINTENANCE
Carbon Pre-Filter and Claryum
Change every 6 months*
The Carbon and Claryum
are replaceable activated carbon
cartridges located in Stages 1 and 3. It is
recommended to replace these cartridges
at least every 6 months. You may need to
replace more often with high water usage
or high sediment level. Timely replacement
of these cartridges will protect the RO
Membrane from high levels of chlorine
and/or sediment. As these filters build up
with sediment, you may notice slower
water output.
RO Membrane Cartridge
Change every 12 months*
The RO Membrane is located in Stage 2.
This membrane reduces the dissolved solids
and organic matter. Most municipally
treated water has a 7.0-7.5 pH, in this
case you would need to replace your RO
Membrane every 12 months. Membrane
life depends on pH and supply water
hardness. Higher pH shortens membrane
life by causing pin-hole leaks. When
output, water quality, and production rate
decrease, it is time to replace the filter.
Remineralizer
Change every 12 months*
The Remineralizer is Stage 4. It is designed
to provide healthy amounts of calcium,
magnesium and potassium for great-
tasting water.
*Filter life depends on water usage and
water supply quality.
NEED HELP? GIVE US A CALL 877.333.7108
Post-Filter
®
®
filter cartridges
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