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Easy-Change Under-Sink Drinking Water Filter System 

Installation and Operating Instructions  

Model US-EZ

Specifications

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

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.

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

the filter and water leakage.

  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.  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.

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

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.

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.

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

CAUTION:

WARNING:

CAUTION:

CAUTION:

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

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.

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.

 

146153   Rev C   12/06

Summary of Contents for US-EZ

Page 1: ...longed 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 The US EZ 1 is tested and certified by NSF International to NSF ANSI ...

Page 2: ... parts or tools from falling down the drain Place masking tape over the area to be drilled to prevent scratches if drill bit slips Mark hole with center punch Use a 1 4 inch drill bit for a pilot hole then using a 9 16 inch or 5 8 inch drill bit drill a hole completely through the sink Smooth rough edges with a file 2 Mounting the Faucet Insert spout A into faucet body B Tighten by screwing the sp...

Page 3: ...ce 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 6 Connecting the Faucet Do not over tighten compression nut Use caut...

Page 4: ... faucet for 10 minutes to remove carbon fines Check for leaks before leaving installation If it leaks see Troubleshooting Alternate Installation This alternate installation will require the purchase of additional fittings to be used with the water supply adapter It will be necessary to remove a section of the cold water line to the main faucet This cold water line is typically 1 2 inch inner diame...

Page 5: ...Loosen and remove compression nut fitting on faucet stem Check if tubing is cut squarely Make sure tubing is inserted firmly into end of faucet stem then retighten compression nut with fingers until secure then tighten nut snugly 1 2 turn with wrench Turn on water supply valve then close faucet and check for leaks NOTE If leaks persist or if there are other leaks on system turn off water supply Ca...

Page 6: ...centration Maximum Permissible Product Water Concentration Reduction Requirements Minimum Reduction Average Reduction Standard 42 Chlorine 2 0 mg L 10 50 96 2 97 4 Particulates 0 5 to 1µm Class I at least 10 000 particles mL 85 99 8 99 9 Standard 53 Cyst Minimum 50 000 L 99 95 99 95 99 9 Turbidity 11 mg L 1 NTU 0 5 NTU 96 4 98 5 Lead pH 6 5 0 15 mg L 10 0 010 mg L 99 3 99 3 Lead pH 8 5 0 15 mg L 1...

Page 7: ...LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED WHETHER ORAL OR ARISING BY USAGE OF TRADE OR COURSE OF DEALING INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF FITNESS OR MERCHANTABILITY THIS WARRANTY IS THE PURCHASER S SOLE AND EXCLUSIVE REMEDY IN NO EVENT SHALL CULLIGAN BE LIABLE FOR ANY ANTICIPATED OR LOST PROFITS INCIDENTAL DAMAGES CONSEQUENTIAL CHARGES OR OTHER LOSSES WHETHER BASED ON BREACH ...

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