Culligan US-640 User Manual

Specifications

Pressure Range: 30–125 psi (2.1–8.6 bar) Temperature Range: 40–100°F (4.4–37.8°C)

Parts Included

• Filter housing with D-40 filter cartridge, built-in mounting bracket, and quick-connect fittings

• Lead-free drinking water faucet

• Quick-connect union, tee, and faucet adapter

• 3/8-inch tubing

• Screws for mounting bracket

Optional Materials

• SW-5 housing wrench

Tools Required

• screwdriver • file

• pencil • pipe cutter or hacksaw

Precautions

WARNING: 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.

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

and water leakage.

CAUTION: The rubber O-ring provides the water-tight seal between the cap and the bot-

tom 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.

CAUTION: 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.

The US-640 is Tested and Certified by NSF International against NSF/ANSI Standard 42 for the aesthetic reduction of Taste and Odor, Chlorine and Particulate Class I. Standard 53 for the reduction of Lead, Mercury, Lindane, Atrazine, Cyst, Asbestos, and Turbidity.

Technical Support: 1-800-645-5426

Mon–Fri., 7:30 AM–5 PM CST

11/03 145816 Rev B

Installation and Operating Instructions Under-Sink Water Filter Model US-640

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.

11⁄

4”

⁄

Pilot Hole

Mounting Hole

Installation

• For standard installation on 3/8-inch cold water line (copper or PVC pipe)

• Please read all instructions and precautions before installing and using your US-640 Undersink 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

/16-inch hole. Most sinks have pre-

drilled 1

/8–inch or 1 1/2–inch 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 1/2-inch hole in the sink for the faucet.

CAUTION: This procedure may generate dusts which can cause severe irritation if inhaled or come in contact with the

eyes. The use of safety glasses and respirator for this procedure is recommended.

CAUTION: DO NOT ATTEMPT TO DRILL THROUGH AN ALL-PORCELAIN OR PORCELAIN-COATED SINK. For applications on

these types of sinks we recommend using the sprayer hole or mounting the faucet through the countertop.

CAUTION: When drilling through a countertop make sure the area below the drilled area is free of wiring and piping.

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

CAUTION: Do not drill through a countertop that is more than 1-inch thick. CAUTION: Do not attempt to drill through a tiled, marble, granite or similar countertop. Consult a plumber or the coun-

tertop manufacturer for advice or assistance.

The following instructions apply to stainless steel sinks only.

(A) Line bottom of sink with newspaper to prevent shavings, parts or tools from falling down the drain. (B) Place masking tape over the area to be drilled to prevent scratches if drill bit slips. (C) Mark point with center punch. Using a

/2-inch drill bit, drill a hole completely through the sink. Smooth rough edges

with a file.

2. Mounting the Faucet

(A) Slide small black rubber gasket OR (B) gasket, aluminum escutcheon plate, and large gasket onto threaded faucet stem. Lower faucet stem through hole in

the sink.

NOTE: Black rubber gasket is designed for smaller holes in sink. Aluminum escutcheon plate with gaskets is designed for larger, pre-drilled holes.

(C) Slide aluminum channel washer up faucet stem, followed by (D) black plastic stem nut. Tighten nut with fingers. NOTE: Do not use pliers to tighten stem-nut. Pliers may strip threads of faucet stem.

3. Mounting the Filter System

(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 1

/2inches (33 mm) clearance below housing to enable filter cartridge changes.

4. Installing Fittings on the Cold Water Line

(A) Using a pipe cutter or hacksaw, remove a 6-inch (152 mm) section of pipe from the 3/8-inch cold water line. Leave a

minimum of 2 inches (51 mm) of pipe above shut-off valve in case pipe must be re-cut at a later time. Deburr ends of remaining pipe with a file.

(B) Push the quick-connect tee onto the bottom portion of cold water line. Push the quick-connect union onto the top por-

tion of the cold water line.

/2inches [89 mm]) and add 1 1/2inches (64 mm). Measure and cut a piece of the 3/8-inch plastic tubing to this length. Insert ends of tubing into the quickconnect union and tee on the cold water line as shown. Be sure to push tubing into fitting until it stops (approximately

/8-inch).

Installation Continued

5. Connecting the Tee to the Filter

Determine the length of plastic tubing needed to connect the free port on the tee with the inlet of the filter (inlet and outlet are marked “IN” and “OUT” on cap). Measure the tubing short enough to prevent kinking. Cut the tubing squarely between the closest set of black guide arrows. Insert one end of the tubing into the tee and the other end into the inlet fitting. Push tubing into fitting until it stops.

NOTE: When cut between a set of black guide arrows, the tubing should be pushed into the fitting so that the entrance of the fitting falls between the next set of guide arrows (approximately

/8-inch [16 mm]).

6. Connecting the Filter to the Faucet

Thread quick-connect faucet fitting onto faucet stem until hand-tight, then tighten 1/4-turn with a wrench. Determine the length of plastic tubing needed to connect the outlet of the filter with the quick-connect fitting on the faucet. Measure the tubing short enough to prevent kinking. Cut the tubing squarely between the closest set of black guide arrows. Insert one end of the tubing into the outlet fitting and the other end into the faucet fitting. Push tubing into fitting until it stops.

7. Putting the Filter into Operation

Turn on the water supply to allow filter to fill with water, then press the red pressure-relief button on top of the 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 and before using the filtered water, flush the cartridge by running water through it for 5 minutes to remove the fines.

• It is recommended that you run the tap at least 20 seconds prior to using water for drinking or cooking purposes.

8. 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 or other quick-connect fittings. 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 collar

(A) around opening of the fitting while pulling the tubing (B) with your other hand.

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

/3full with water. Add 2 tablespoons of bleach and scrub bottom of housing with nonabrasive sponge or cloth. Rinse throughly. Lubricate O-ring with clean petroleum jelly (Vaseline®). 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).

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:

• It is recommended that you run the tap at least 20 seconds prior to using water for drinking or cooking purposes.

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). Lubricate O-ring with silicone grease

and replace securely into groove. Screw bottom of housing onto cap and hand-tighten. DO NOT OVER-TIGHTEN.

…From quick-connect fittings

1. Turn off water supply and turn on faucet to release pressure in pipes. Remove tubing from fitting (see #8 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 1-800-645-5426.

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