Culligan US-600A Installation And Operating Instructions Manual

Under-Sink Water Filter

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Installation and Operating Instructions
Model US-600A

Before proceeding with installation, choose the appropriate filter cartridge and install in
housing according to the cartridge replacement instructions (p. 2). See Filter Cartridge
Selection Guide on p. 3 to determine the best cartridge for your filtration needs.

Specifications

Pressure Range: 30–125 psi (2.1–8.6 bar)
Temperature Range: 40–100°F (4.4– 37.7°C)

Parts Included

• filter housing assembly with built-in mounting bracket and quick-connect fittings

• 3⁄8 inch (10 mm) tubing

• (2) quick-connect elbows

• SW-5A housing wrench

• D-20A cartridge

Tools Required

• screwdriver

• file

• pencil

• pipe cutter or hacksaw

Optional Materials

• faucet (FCT-1) for use with D-40A filter
cartridge

Precautions

Do not use with water that is microbiologically unsafe or of unknown
quality without adequate disinfection before or after the system. Systems certified for
cyst reduction may be used on disinfected waters that may contain filterable cysts.

Filter must be protected against freezing, which can cause cracking of the

filter and water leakage.

The rubber O-ring provides the water-tight seal between the cap and the
bottom of the housing. It is important that the O-ring be properly seated in the groove
below the threads of the housing or a water leak could occur.

Because of the product’s limited service life and to prevent costly repairs or
possible water damage, we strongly recommend that the bottom of all plastic housings
be replaced every ten years. If the bottom of your housing has been in use for longer
than this period, it should be replaced immediately. Date the bottom of any new or
replacement housing to indicate the next recommended replacement date.

NOTE:

• For cold water use only.

• Make certain that installation complies with all state and local laws and regulations.

• The contaminants or other substances removed or reduced by the selected cartridge

are not necessarily in your water. Ask your local water municipality for a copy of
their water analysis, or have your private well tested by a reputable water testing
lab.

• 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 filter cartridge used with this system has a limited service life. Changes in

taste, odor, color, and/or flow of the water being filtered indicate that the cartridge
should be replaced.

• Some harmless bacteria may attack cellulose media cartridges (such as the D-10).
If your cartridge seems to disintegrate or develops a musty or moldy odor, switch to
a synthetic media cartridge or call Technical Support.

The US-600A with D-20A has been tested and certified by NSF International against
NSF/ANSI Standard 42 for the reduction of Aesthetic Chlorine Taste and Odor.

Systems tested and certified by NSF International with cartridges D-10, D-20A, D-30A,
and D-40A. See Performance Data Sheet, in manual, for specific claims.

Installation

NOTE:

• For standard under-sink installation on 3⁄8 inch (10 mm) cold water line (copper or
PVC pipe).

• Please read all instructions and precautions before installing and using your
US-600A under-sink filter.

• Install filter cartridge in filter housing before proceeding with installation (see Filter
Cartridge Replacement on p. 2).

• Numbered diagrams correspond with numbered steps.

1. (A) Turn off cold water supply and open nearest faucet to release pressure in pipes
before starting installation. Place a tray or towels under the cold water line to catch
excess water. (B) Select location under sink where filter is to be mounted. Use
mounting bracket as a template to mark screw locations. Mount filter in marked
location using mounting bracket.

NOTE: (C) Allow 11⁄2 inches (33 mm) clearance below housing to enable filter

cartridge changes.

2. Using a pipe cutter or hacksaw, remove a 3-inch (76 mm) section of pipe (A) from
the 3⁄8 inch (10 mm) cold water line. Deburr ends of remaining pipe with a file. (B)
Push a quick-connect elbow onto each end of remaining cold water line. Be sure to
push elbow onto pipe until you hit a hard stop.

3. Determine the lengths of tubing needed to connect the inlet and outlet sides of
filter to the quick-connect fittings on the cold water line. Measure tubing short
enough to prevent kinking. Cut the tubing squarely between the closest set of
black guide arrows. Assemble as shown in Figure 3 on page 2, inserting tubing into
appropriate inlet or outlet quick-connect fitting until it stops (inlet and outlet are
marked “IN” and “OUT” on cap).

NOTE: When cut between a set of black guide arrows, the tubing should be pushed

1

A

B

C

1 1⁄2"

2

B

A

Technical Support: 1-800-721-9243 (M-F 8:00 am - 4:30 pm CST)

01020691 REV A 06/09

into the fitting so that the entrance of the fitting falls between the next set of guide arrows (approxi­mately 5⁄8 inch [16 mm]).

4. Slowly turn on the water supply (A) to allow filter to fill with water, then press the red pressure-relief
button (B) on top of filter to release trapped air. Check for leaks before leaving installation.

NOTE: A drinking water cartridge may contain carbon fines (very fine black powder). After installation,

flush the cartridge for 15 minutes to remove the fines before using the water. It is recommended that
you run the tap at least 20 seconds prior to using water for drinking or cooking purposes.

5. NOTE: Disconnecting the Tubing from the Quick-Connect Fittings.

Routine maintenance and cartridge replacement will not require that you disconnect the tubing from

the filter cap; however, tubing may be quickly and easily removed from the fittings if necessary. First,
turn off the water supply to the filter and open faucet to drain the pipes. Then simply depress the gray
collar (A) around the inlet fitting of the housing while pulling the tubing (B) with your other hand.
Repeat for the outlet fitting.

Filter Cartridge Replacement

A. (1) Turn off water supply to filter and place a tray or towel under the system to catch any water that

spills during removal of the filter cartridge.
(2) Depress red pressure-relief button, then
(3) unscrew and remove bottom of filter housing (See Fig. A.)
NOTE: If turning off water supply to filter will also turn off water supply to the rest of the home, be

sure to fill a bucket of water first to allow you to clean housing after it has been removed.

B. Locate and remove large O-ring (1), wipe clean of lubricant, and set aside. Discard used filter cartridge

(2). Rinse out bottom of filter housing and fill 1⁄3 full with water. Add 2 tablespoons of bleach and

scrub bottom of housing with nonabrasive sponge or cloth. Rinse thoroughly. Lubricate O-ring with
clean silicone grease. Insert O-ring in groove and press into place.

NOTE: This step is important to ensure a proper housing seal. Make certain the O-ring is seated level

in the groove.

Insert new filter cartridge in bottom of housing. Cartridges with one gasket should be inserted with

the gasketed end toward the threads of the housing (gasketed end would point upwards if housing is

mounted as shown in Fig. B).
C. (1) Screw bottom of housing onto the cap and hand-tighten. DO NOT OVER-TIGHTEN.
(2) Slowly turn on the water supply to allow filter to fill with water, then
(3) press the red pressure-relief button on top of filter to release trapped air. Check for leaks before

leaving installation.

NOTE: A drinking water cartridge may contain carbon fines (very fine black powder). After installation,

flush the cartridge for 15 minutes to remove the fines before using the water. It is recommended that

you run the tap at least 20 seconds prior to using water for drinking or cooking purposes.

3

4

4

A

B

A

A

B

2

1

3

Replacement Parts

1 01020827 OR-233 O-ring
2 01020823 SW-5A housing wrench not shown
For replacement parts, contact your nearest retailer or call

Culligan Consumer Services at 1-888-777-7962.

Maintenance

Contact your area retailer or local water treatment professional for replacement cartridge pricing.

1

2

B

1

2

C

2

2

3

1

Filter Cartridge Selection Guide

Select the right cartridge for
your water needs

sediment • •
bad taste & odor • • • •
aesthetic chlorine: taste & odor • • • •
Giardia • •
Cryptosporidium • •
Lead/Mercury •
Lindane/Atrazine •
Particulate Class II •
Particulate Class I • •

filter life in gallons (months)*

service flow rate gpm (Lpm)** 1.0 (3.8) 1.0 (3.8) 0.9 (3.4) 0.6 (2.3)
* Filter cartridge life varies depending on filter type, usage and water conditions.
** Flow rates measured at 60 psi (4.1 bar).

† If not plumbed into separate tap, flow rate may be less than 0.5 gpm for direct connect systems.
NOTE: Substances reduced are not necessarily in your water. Filter must be maintained according to
manufacturer’s instructions, including replacement of filter cartridges.

D-10 D-20A D-30A D-40A†

250

(3)

1000

(12)

1000

(12)

600

(6)

Troubleshooting

Leaks between cap and bottom of filter housing

1. Turn off water supply and press the red pressure-relief button. Remove bottom of

housing.

2. Clean O-ring and O-ring groove (located directly beneath threads of housing). Lubri-

cate O-ring with silicone grease and replace securely into groove. Screw bottom of
housing onto cap and hand-tighten. DO NOT OVER-TIGHTEN.

Leaks on inlet/outlet connections

1. Turn off water supply and turn on faucet to release pressure in pipes. Remove

tubing from fitting (see #3 under Installation) and make sure end of tubing is cut
squarely and free of burrs. Reinsert tubing into quick-connect fittings, making sure
to push securely until tubing hits a hard stop.

2. Turn on water supply. If leaks persist, or if there are other leaks on system, turn off

water supply. Call Technical Support at 1-800-721-9243.

Performance Data

Model US-600A

Important Notice: Read this performance data and compare the capabilities of this sys­tem with your actual water treatment needs. It is recommended that, before installing
a water treatment system, you have your water supply tested to determine your actual
water treatment needs.

This system has been tested according to NSF/ANSI 42 and 53 for the reduction of the
substances listed below. The concentration of the indicated substances in water entering
the system was reduced to a concentration less than or equal to the permissible limit
for water leaving the system, as specified in NSF/ANSI 42 and 53.

D-20A Cartridge

Max.

Substance
Standard 42 Aesthetic Effects
Chlorine 2.0 mg/L±10% ≥50% 95.7%

Flow Rate=1 gpm (3.78 Lpm) Capacity=1000 gallons (3785 L) or 12 months

Influent Challenge

Concentration

Permissible
Product Water
Concentration

Reduction

Requirements

Minimum

Reduction

Average

Concentration

D-30A Cartridge

Substance
Standard 42 Aesthetic Effects
Chlorine 2.0 mg/L±10% ≥50% 97.4%

Particulates
(0.5– <um)
Class I

Standard 53 Health Effects

Cysts†
Turbidity 11 ± 1 NTU 0.5 NTU 95.5% 98.2%

Asbestos

Flow Rate = 0.9 gpm (3.4 Lpm) Capacity=1000 gallons (3785 L) or 12 months

Influent Challenge

Concentration

at least 10,000

particles/mL

Minimum

50,000/L

107 to 108

fibers/L>10

micrometers in length

Max Permissible

Product Water
Concentration

Reduction

Requirements

≥85% 99.9%

99.95% 99.99% 99.99%

Minimum
Reduction

99% >99.9% >99%

Concentration

Average

D-40A Cartridge

Substance
Standard 42 Aesthetic Effects
Chlorine 2.0 mg/L±10% ≥50% 99.1%
Particulates

(0.5– <um)
Class I

Standard 53 Health Effects

Cysts†

Turbidity 11 ± 1 NTU 0.5 NTU 95.5% 98.2%

Asbestos

Lead 6.5 pH 0.15 mg/L ±10% 0.010 mg/L 99.3% 99.3%
Lead 8.5 pH 0.15 mg/L±10% 0.010 mg/L 99.3% 99.3%

Mercury 6.5 pH 0.006 mg/L±10% 0.002 mg/L 96.6% 95.0%
Mercury 8.5 pH 0.006 mg/L±10% 0.002 mg/L 94.1% 88.5%
Atrazine 0.009 mg/L±10% 0.003 mg/L 94.3% 94.3%
Lindane 0.002 mg/L±10% 0.0002 mg/L 97.6% 97.6%

Flow Rate = 0.6 gpm (2.27 Lpm) Capacity=600 gallons (2271 L) or 6 months
If not plumbed into separate tap, flow rate may be less than 0.5 gpm for direct connect systems.

† Based on the use of microspheres or Cryptosporidium parvum oocysts.
Testing was performed under standard laboratory conditions, actual performance may vary.

Influent Challenge

Concentration

at least 10,000

particles/mL

Minimum

50,000/L

107 to 108

fibers/L>10

micrometers in length

Max Permissible

Product Water
Concentration

Reduction

Requirements

≥85% 99.9%

99.95% 99.99% 99.99%

Minimum
Reduction

99% >99% >99%

Concentration

Average

D-10 Cartridge

Max.

Substance
Standard 42 Aesthetic Effects
Chlorine 2.0 mg/L±10% ≥50% 95%
Particulates

(1– <5µm)
Class II

Flow Rate=1 gpm (3.78 Lpm) Capacity=250 gallons (946 L) or 3 months

Influent Challenge

Concentration

at least 10,000

particles/mL

Permissible
Product Water
Concentration

Reduction

Requirements

Minimum
Reduction

≥85% 85%

Average

Concentration

3