Culligan US-2 User manual

2-Stage Filtration System
Installation and operating instructions
Model US-2
Sistema de filtración
de dos etapas
Instrucciones de instalación y uso
Modelo US-2
Système de filtration
en deux phases
Guide d’installation et d’utilisation
Modèle US-2
DRINKING WATER | AGUA POTABLE | EAU POTABLE

2
PRECAUTIONS
WARNING: Do not use with water that is microbiologically unsafe or of unknown source/quality without
adequate disinfection before or after the system.
CAUTION: Filter housing must be protected against freezing temperatures, frost, snow, sleet, and ice.
Exposure to these elements can produce cracks and product failures.
CAUTION: This product has a limited service life. We recommend that a record be kept regarding the
date of install and any other performed maintenance. Because of the product’s limited service life and
to prevent costly repairs or possible water damage, we strongly recommend that the head of the filter
be replaced every ten years.
CAUTION: Turn off water supply to head and remove cartridges if it must be left unattended for an
extended period of time.
•For cold water use only. Do not use on hot water line.
• After prolonged periods of non-use (such as during a vacation) it is recommended that the system
be flushed thoroughly. Let water run for 5–6 minutes before using.
• The lters recommended for use with this system carry a limited service life. Changes in taste, odor,
color, and/or flow of the water being filtered indicate that the cartridge should be replaced.
• Make certain that installation complies with all state and local laws and regulations.
• The contaminants or other substances removed or reduced are not necessarily in your water.
TOOLS & MATERIALS
REQUIRED
• Screwdriver
• Adjustable Wrench
• Utility Knife
• Drill and 1/8˝ Drill Bit
• Plumbers Tape
• Tape Measure
• Safety Glasses
• Pencil
• Pan or Bucket
• Masking Tape
• Towels
PARTS
INCLUDED:
• System Head with Built-in Bracket
• Filter Life Indicator Faucet
• Filters (US-2-R)
• Water Supply Adapter
• Black Rubber Gasket
• Metal Lock Washer
• Faucet Stem Nut
• Mounting Screws
• 1/4˝ Plastic Tubing
• Battery
SPECIFICATIONS
Pressure Range: 30 –100 psi (207–689 kPa)
Rated Service Flow: 0.5 gpm at 60 psi
(1.9 Lpm at 4.1 bar)
Temperature Range: 40 –100°F (4.4 – 37.7°C)
English
18007217360 MONDAYFRIDAY 8:00AM4:30PM CST

3
PARTS INCLUDED:
System Head with Built-in Bracket
US-2-R Filters
Filter Life Indicator Faucet
Water Supply Adapter
Black Rubber Gasket
Metal Lock Washer
Faucet Stem Nut
Mounting Screws
1/4˝ Plastic Tubing
2-STAGE FILTRATION SYSTEM

4
INSTALLATION
• Consult your local plumbing codes and install accordingly.
• If your sink does not have a water sprayer hole, go to step 1, if your sink does have a dedicated faucet hole,
go to step 3.
NOTE: The filter life indicator faucet should be positioned with function, convenience and appearance in
mind. An adequate at area is required to allow faucet base to rest securely. Most sinks have pre-drilled
1-3⁄8˝ or 1-1⁄2˝ diameter holes that may be used for faucet installation. If these pre-drilled holes cannot
be used or are in an inconvenient location, it will be necessary to drill a hole in the sink to accommodate
the faucet.
NOTE: DO NOT DRILL THROUGH AN ALL-PORCELAIN OR CAST IRON SINK. If installing on an
all-porcelain or cast iron sink, the faucet must be mounted in a pre-drilled sprayer hole or through
the countertop next to the sink. If the countertop must be drilled, make certain that the area below the
drilling location is free of wiring and pipes. Also, make sure that there is sufcient room to make the
proper connections to the bottom of the faucet mount.
NOTE: Consult with a plumber or the countertop manufacturer for assistance with drilling through
countertops more than 1˝ thick or if it is made of tile, marble, granite, or similar material.
CAUTION: The use of safety glasses and
respirator for this procedure is recommended.
In order to prevent parts and materials from
falling down the drain, line the sink with
newspaper or a towel.
Place masking tape over the area to be drilled
to prevent scratches if drill bit slips.
Using a pencil, mark the drill hole. Drill a hole
for faucet (most sinks have 1-3⁄8˝ or 1-1⁄2˝
diameter holes).
Drill completely through the sink
or countertop.
2
1

5
Guide the black rubber gasket onto the threaded
faucet stem. Lower faucet stem through hole in
sink. Make sure the faucet sits flat on top of the
sink or countertop surface.
From underneath the sink, guide the metal lock
washer onto stem, then screw the plastic faucet
stem nut all the way up the faucet stem and
tighten with fingers to secure faucet to sink.
Remove spare battery and put inside the slot just
below the Culligan logo (positive side facing out).
Turn off cold water shut-off valve then turn on
the kitchen faucet and allow all water to drain
from line.
Disconnect the cold water line from the
cold water shut-off valve.
NOTE: If rigid plumbing pipe (metal or plastic)
is used, you may need to shorten the pipe using
a hacksaw or pipe cutter to accommodate the
water supply adapter.
6
3
5
4

6
Remove the cap from the top of the system head.
Choose an easy-to-access area under the sink to
mount the filter system.
NOTE: Allow 2˝ of clearance below system to
allow space for filter changes. The filter system
must be mounted in a vertical position.
NOTE: Filter head should be mounted on a stud
or firm surface.
Hand-tighten the water supply adapter to the
cold water shut-off valve as shown.
Hand-tighten the lower end of cold water line
onto the top of the water supply adapter.
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9
Using the built-in bracket on the back of the
system head, mark with a pencil the holes for
the mounting screws on the wall surface.
Using a 1/8˝ drill bit, drill two pilot holes
for the mounting screws. Insert mounting
screws into the wall with a screwdriver,
leaving approximately 3/8˝ of each mounting
screw exposed.
Hang the system head on the eyes of the bracket
and replace the system head cap.
10
2˝

7
NOTE: Routine maintenance and cartridge
replacement will not require that you disconnect
the tubing from the system head; however, tubing
may be quickly and easily removed from the
fitting if necessary. First, turn off the water supply
to the filter. Open kitchen faucet, then press in
the grey collar around the fitting while pulling the
tubing with your other hand.
Determine the length of 1/4˝ plastic tubing
needed to connect the system head inlet to the
water supply adapter (reference image above
for inlet and outlet location). Make sure to allow
enough plastic tubing to prevent kinking in
the line.
Cut the 1/4˝ plastic tubing squarely on both ends
with a utility knife, making sure not to crimp the
plastic tubing during cutting.
Wet one end of the 1/4˝ plastic tubing with
water and push it into the water supply adapter
approximately 5/8˝ until it stops.
Wet the other end of the 1/4˝ plastic tubing with
water and push it into the system head inlet
approximately 5/8˝ until it stops.
NOTE: Do not bend or crimp 1/4˝ plastic tubing
when inserting.
11 12
Determine the length of 1/4˝ plastic tubing
(attached to the faucet) needed to connect the
threaded faucet stem to the system head outlet.
Make sure to allow enough plastic tubing to
prevent kinking in the line.
Cut the 1/4˝ plastic tubing squarely on both ends
with a utility knife, making sure not to crimp the
plastic tubing during cutting.
13 14
INLET OUTLET
COLLAR

8
Turn on the cold water shut-off valve.
Check for leaks.
Turn on drinking water faucet and and allow
water to run for 10 minutes to ush air and
carbon nes (very ne black powder).
Check for leaks before leaving installation.
If it leaks, see troubleshooting.
For both cartridges line up arrow on cartridge
with unlocked position on head, insert cartridge,
and turn to locked position.
When looking at the system from the front the
US-2-R1 should be on the left and the US-2-R2
should be on the right.
Wet the end of the 1/4˝ plastic tubing with
water and push it into the system head outlet
until it stops.
NOTE: Do not bend or crimp 1/4˝ plastic tubing
when inserting.
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9
FILTER CARTRIDGE REPLACEMENT
• Replace your US-2-R lters every 6 months for best results.
• Replacement cartridges available at store where purchased.
For both new cartridges, line up arrow on
cartridge with unlocked position on head, insert
cartridge, and turn to locked position.
When looking at the system from the front the
US-2-R1 should be on the left and the US-2-R2
should be on the right.
Turn on drinking water faucet and and allow
water to run for 10 minutes to ush air and
carbon nes (very ne black powder).
3
Turn off the cold water shut-off valve to the
filter system and dispense water from
kitchen faucet until water flow stops
to relieve pressure.
Turn arrow on each cartridge from locked to
unlocked position.
Gently pull down to remove cartridge and discard.
NOTE: Place a pan or bucket under the lter
system to catch any water drips.
12
Remove and change battery (#1632) located in
the slot just below the Culligan logo on the faucet.
Once the battery is inserted correctly (positive
side facing out), the LED will blink red for about
30 seconds then it will shut off. To indicate the
filter needs to be changed soon it will flash yellow.
When the filter needs to be changed immediately,
it will flash red.
NOTE: The battery will need to be changed every
time a lter is changed (battery sold separately).
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10
TROUBLESHOOTING
LEAKS BETWEEN THE SYSTEM HEAD AND THE FILTERS:
1. Turn off the water supply to the lter and dispense water from kitchen faucet until water and
airflow stops.
2. Remove cartridge and inspect o-rings to make sure they are in place and clean.
3. Install cartridge, turn on water supply and check for leaks.
LEAKS AROUND THE FITTINGS:
1. Turn off the water supply to the lter to relieve pressure.
2. While pulling the 1/4˝ plastic tubing with one hand, press in on the grey collar around the inlet and/
or outlet tting. Check to make sure that the 1/4˝ plastic tubing is cut squarely and that it is not
scratched or crimped. If the 1/4˝ plastic tubing is unevenly cut or scratched, cut off 1/2˝ to 5/8˝ and
re-install the tubing.
3. Turn on water supply and check for leaks.
LEAKS ON THE WATER SUPPLY ADAPTER CONNECTION:
1. Turn off the water supply to the lter to relieve pressure.
2. Locate the water supply adapter.
• If the 1/4˝ plastic tubing is leaking, follow the previous steps (“Leaks around the ttings”).
• If the thread between the water supply adapter and the cold water line is leaking,
tighten more securely.
3. Turn on water supply and check for leaks.
If leaks persist, or if there are other leaks on system, turn off water supply. Call technical support
at 1-800-721-7360.
PRODUCT REGISTRATION
Please be sure to go online within 30 days of purchase and register your product at
www.register.culligan.com.