AO Smith 4000CARBON REPLACEMENT MANUAL
REPLACEMENT MANUAL
Fresh filters, obsessively engineered to provide you with clean water. Take a few minutes. Change your filters. Whatever your
water need - enjoy the next round of clean
water.
If you need help or have a question,
we’ve got you covered.
Give us a call at
877.333.7108
AO-4000-CARBON
REPLACEMENT
ELEMENT
CARBON & CLARYUM®
REPLACEMENT
for use with AO-US-RO-4000
FRESH
FILTERS.
CLEAN
WATER.
Fresh filters, obsessively engineered
to provide you with clean water.
Take a few minutes. Change your
filters. Whatever your water need –
enjoy the next round of clean water.
If you need help or have a question,
we’ve got you covered. Give us a call
at 877.333.7108.
INSTRUCTIONS:
Remove the plastic wrap from the
1
replacement filter cartridges.
Turn off the cold water valve under the sink.
2
Release the pressure from the system by
turning on the filtration system faucet. When
no water flows from the filtration system
faucet, you will be ready to change the filters.
Remove Stage 1 and Stage 3 sumps from the
3
filtration system by rotating the sump to
the left and pulling down.
Hold each cartridge sump over the sink.
4
Separate the two pieces of the sump by
turning the bottom portion of the sump to
the left. Pour excess water down the drain.
Pull down on each cartridge to disconnect the
filter cartridge from the top half of the sump.
1
3
2
NOTE: If using the undercounter wrench provided
with the original system, follow these steps.
Insert and connect each new filter cartridge
5
to the top half of the sump. Reattach the
bottom of the sump to the top half by
turning to the right and tightening.
Insert the cartridge with clear netting into
Stage 1 sump. Insert the cartridge with
blue netting into Stage 3 sump.
2
1
Reattach each sump to the top housing.
6
Ensure all connection points are aligned.
Push the top of the sump up into the bottom
of the top housing and turn the sump to the
right. Ensure the sump is fully attached and
locked into Stage 1 on the left and Stage 3
on the right.
3
Once both filter cartridges have been changed
7
and sumps are securely attached to the top
housing, slowly turn on the cold water valve.
Confirm the filtration system faucet is closed
and allow the tank to completely fill (this may
take around two hours).
Once the tank has completely filled,
8
inspect for leaks.
If there are no leaks, flush the filter cartridges
9
by opening the filtration system faucet and
allowing the water to run through the filters
until there is no pressure coming out of the
filtration system faucet.
Close the filtration system faucet and allow
10
two hours for the pressure to build in the
system. Your filtration system is ready for use.
The AOS-4000-CARBON filter has been Tested and
Certified by NSF International in model
AO-US-RO-4000 against NSF/ANSI Standard 42 for
material safety only.
The AOS-4000-CLARYUM
Tested and Certified by NSF International against
NSF/ANSI Standards 42, 53, 401 and conforms to
NSF Protocol P473 in model AO-US-RO-4000 for
the reduction of the claims specified on the
Performance Data Sheet and at www.nsf.org.
• Conforms to NSF/ANSI Standards 42, 53, 401 and conforms to NSF Protocol P473
for the specific performance claims as verified and substantiated by test data. See
performance data sheet for individual contaminants and reduction performance.
• Rated capacity: 365 gallons (1,382 liters).
• Systems certified for cyst reduction may be used on disinfected waters that may
contain filterable cysts.
®
post-filter has been
1
2
TIP: Have a towel to catch any water that drips.
TIP: Have a towel to catch any water that drips.
1
2
Do not use tools other than undercounter wrench to remove or
tighten sumps. Over tightening can cause damage and result in leaking.
For use with municipally treated water only. Do not use
with water that is microbiologically unsafe or of unknown
water quality without adequate disinfection before or
after the system.
1
2
1
2
Warranty information can be found at www.AOSmithatLowes.com
A. O. Smith Corporation | P.O. Box 1597
Johnson City, TN 37605-1597 | 877.333.7108
AO-4000-CARBON_20180504
NEED HELP? GIVE US A CALL 877.333.7108NEED HELP? GIVE US A CALL 877.333.7108
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