Culligan US-EZ Installation And Operating Instructions Manual

Easy-Change Under-Sink Drinking Water Filter System
Installation and Operating Instructions
Model US-EZ

Specifications

Range / Capacity Level 1 Level 3 Level 4

Pressure Range: 30 – 100 psi (2.1 – 6.9 bar)

Temperature Range: 40–100 ° F (4.4 – 37.7 ° C)

Rated Service Flow: 0.5 gpm (1.9 Lpm)

Filter Capacity: 3000 gallons (11,356 L) 500 gallons (1893 L)

Turbidity: 5 NTU max

Parts Included:

filter head with built-in bracket

•

filter cartridge

•

mounting screws

•

water supply adapter

•

lead-free faucet and fittings

•

1⁄4-inch plastic tubing

•

cartridge change reminder sticker

•

Tools Required

phillips screwdriver• adjustable wrench•
hand or electric drill (cordless recommended)• safety glasses•
utility knife (for plastic tubing)• Teflon® tape•
towel• center punch•
pencil• 1/4-inch & 9/16 or 5/8-inch drill bits•
tape measure• file•

Optional Materials

3" x 3" x 1/2" wood block•
1/8-inch drill bit•

Precautions

WARNING:

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.

CAUTION:

the filter and water leakage.

CAUTION:

repairs or possible water damage, we strongly recommend that the head of the filter be
replaced every ten years. If the head of your filter has been in use for longer than this
period, it should be replaced immediately. Date the top of any new head to indicate the
next recommended replacement date.

CAUTION:

unattended for an extended period of time.

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.
After prolonged periods of non-use (such as during a vacation) it is recommended

•

that the system be flushed thoroughly. Let water run for 10 minutes before using.
The filter cartridges used with this system have a limited service life. Changes in

•

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

Do not use with water that is microbiologically unsafe or of

This filter must be protected from freezing, which can cause cracking of

Because of the product’s limited service life and to prevent costly

Turn off water supply to head without cartridge if it must be left

146153 Rev C 12/06

The US-EZ-1 is tested and certified by NSF International to NSF/ANSI Standard 42 for
the aesthetic reduction of Chlorine Taste and Odor and Nominal Particulate Class III.

The US-EZ-3 is tested and certified by NSF International to NSF/ANSI Standard 42 for
the aesthetic reduction of Chlorine Taste and Odor and Nominal Particulate Class 1.
Standard 53 for the reduction of Cysts, Turbidity, Lead, Lindane and Atrazine.

The US-EZ-4 is tested and certified by NSF International to NSF/ANSI Standard 42 for the
aesthetic reduction of Chlorine Taste and Odor, Chloramines and Nominal Particulate
Class 1. Standard 53 for the reduction of Cysts, Lead, Mercury, VOC, MTBE and Turbidity.

Installation

For standard installation on 1/2-inch-14 NPS threads (most common thread on US kitchen faucets)

•

cold water line.
Please read all instructions and precautions before installing and using the US-EZ water filter.

•

Numbered diagrams correspond with numbered steps.

•

1. Selecting the Faucet Location

NOTE: The drinking water faucet should be positioned with function, convenience and appearance in mind.
An adequate flat area is required to allow faucet base to rest securely. The faucet fits through a 9/16-inch
hole. Most sinks have pre-drilled 13⁄8" or 11⁄2" 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
9/16-inch or 5/8-inch hole in the sink to accommodate the faucet.

WARNING:

come in contact with the eyes. The use of safety glasses and respirator for this procedure is recommended.

CAUTION:

sink, mount the faucet in pre-drilled sprayer hole or drill through counter top next to sink.

CAUTION:

wiring and piping. Make certain that you have ample room to make the proper connections to the bottom
of the faucet.

CAUTION:

CAUTION:

plumber or the counter top manufacturer for advice or assistance.

Line bottom of sink with newspaper to prevent metal shavings, parts or tools from falling

A)

down the drain.
Place masking tape over the area to be drilled to prevent scratches if drill bit slips.

B)

Mark hole with center punch. Use a 1/4-inch drill bit for a pilot hole, then, using a 9/16-inch or

C)

5/8-inch drill bit, drill a hole completely through the sink. Smooth rough edges with a file.

This procedure may generate dusts which can cause severe irritation if inhaled or

DO NOT ATTEMPT TO DRILL THROUGH AN ALL-PORCELAIN SINK. If you have an all-porcelain

When drilling through a counter top make sure the area below the drilled area is free of

Do not drill through a counter top that is more than 1-inch thick.
Do not attempt to drill through a tiled, marble, granite or similar counter top. Consult a

1

C

B

A

2

A

C

B

2. Mounting the Faucet

Insert spout A into faucet body

A)

the faucet body.
Slide black rubber gasket

B)

Accessing the faucet from underneath the sink, slide metal washer E up the faucet stem,

C)

followed by the white plastic stem nut F. Tighten with fingers to secure faucet to sink.

NOTE: do not use pliers to tighten stem nut. Pliers may strip the threads of the faucet stem.

D

Tighten by screwing the spout nut C onto the threads on

B

.

onto threaded faucet stem. Lower faucet stem through hole in sink.

3. Installing the Water Supply Adapter

The supply adapter fits 1/2-inch-14 NPS supply threads.

Turn off cold water supply line.

A)

Turn on the cold water faucet and allow all water to drain from line.

B)

Disconnect cold water line from 1/2-inch-14 NPS threaded stub on bottom of main faucet.

C)

NOTE: If it is too difficult to access the threaded stub on the bottom of the cold water faucet, see

Alternate Installation on page 4.
Apply Teflon® tape onto male threads of faucet stub and supply adapter. Screw the water supply

D)

adapter to the threaded faucet stub as shown.
Using the nut that previously connected the cold water line to the faucet, screw the cold water line

E)

to the male supply adapter threads. Hand tighten nut and snug with wrench.

4. Mounting the Filter System

Select a location under the sink to mount the filter assembly. Choose a location where the filter will

A)

be easily accessible.

NOTE: Allow 11⁄2-inches (38 mm) clearance below housing or 12-inch (305 mm) below filter head
to enable filter cartridge changes.

D

E

F

B

3

D

C

A

E

Technical Support: 1-800-721-9243, Monday-Friday, 8:00 a.m. – 4:30 p.m., CST

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NOTE: Filter head should be mounted in vertical position, use mounting bracket as a template to
mark screw locations. Mount filter head in marked location using screws.

CAUTION:

support the weight of the filter and help prevent strain on the cold water line.
If filter assembly is mounted on a side wall next to drawers, remove drawers. Cabinet wall may

B)

be too thin to support filter assembly. We recommend that a 3" x 3" x 1/2" wood block be used
on the back side of the cabinet to allow the screws to penetrate through the cabinet and into the
wood block. This will allow the filter assembly to be fully supported. Using the filter head assembly
as a template, drill two 1/4-inch holes in the side wall. Position the block of wood behind these
two holes and drill two 1/8-inch holes into the block. Use the two screws provided to mount filter
assembly head to side wall and on the block of wood.

Filter head should be mounted on a stud or firm surface. The mounting bracket will

5. Connecting the Supply Adapter
and Inlet of Filter

Determine the length of plastic tubing needed to connect the inlet (left) side of the filter with the

A)

supply adapter. Be sure to allow enough tubing to prevent kinking and cut the tubing squarely.
Place a mark 5/8-inch (16 mm) from both ends of the tubing.

Wet tubing with water and insert into the supply adapter, 5/8-inch (16 mm) until mark is flush

B)

with fitting.
Wet tubing with water and insert into the filter inlet, 5/8-inch (16 mm) until mark is flush with

C)

fitting.

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 system;
however, tubing may be quickly and easily removed from the fitting if necessary. First, turn off the
water supply to the filter. Open faucet, then press in the grey collar around the fitting while pulling
the tubing with your other hand.

4A

5

A

4B

5/8"

(16mm)

Cabinet Wall

5/8"

(16mm)

B

Wood
Block

6. Connecting the Faucet

Do not over-tighten compression nut. Use caution not to bend or crimp tubes

CAUTION:

when securing.

Determine the length of plastic tubing needed to connect the outlet (right) side of the filter with

A)

the faucet. Cut the tubing squarely.

CAUTION:

Slide plastic compression nut A over tubing followed by the ferrule B, make sure the ferrule is

B)

oriented properly, then place insert C into the end of tubing.
Push the tubing firmly into the end of the faucet stem D and hand-tighten the compression nut

C)

onto threads until secure. Then tighten approximately 1/2 turn with a wrench.

Do not bend or crimp tube when inserting.

7. Installing the Cartridge

Hold cartridge from the bottom when installing or changing the cartridge. Use caution not to scrape
knuckles on bracket when locking the cartridge into place. Line up the arrow on the cartridge with unlocked
padlock symbol on head. Insert cartridge and turn arrow to locked padlock symbol. See the diagrams in
Filter Cartridge Replacement on page 4.

8. Putting the Filter into Operation

Turn on water supply valve. Check for leaks. If it leaks, see Troubleshooting.

A)

Rotate handle of drinking water faucet counter-clockwise to “on” position. Allow water to run for

B)

10 minutes to flush air and carbon fines (very fine black powder).
Check for leaks before leaving installation. If it leaks, see Troubleshooting.

C)

5C

6

A

Inlet

Insert

ferrule

orientation

C

D

Outlet

B

Technical Support: 1-800-721-9243, Monday-Friday, 8:00 a.m. – 4:30 p.m., CST

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