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Technical Support: 1-800-645-5426, Monday-Friday, 7:30 am–5:00 pm, CST

Filter Cartridge Replacement

• Filter cartridges for the SY-2650 will last about 500 gallons or six months

before they need to be replaced. Filter cartridge life varies depending on
usage, and/or water conditions.  Changes in taste, color, and flow of the
water being filtered indicate that the cartridge should be replaced.

• Read all instructions before replacing filter cartridges. 

WARNING: 

Use safety glasses and gloves when handling household bleach to
prevent bodily injury. Follow bleach manufacturer's instructions
when handling bleach.

1.

Close water supply valve and open drinking water faucet to release pressure
from system.

2.

Using the housing wrench, unscrew and remove bottom of filter housing.
Locate and remove large O-ring, wipe clean of lubricant, and set aside.
Repeat for second housing.

3.

Discard used filter cartridges. Using a non-abrasive sponge or cloth, scrub
the bottom of filter housings, O-ring grooves, and caps with dish soap and
warm water. Rinse thoroughly. Fill bottom of each housing 1/3 full with
water. Add 1 teaspoon of household bleach and scrub to disinfect. 

4.

Lubricate O-rings with silicone grease. Insert each O-ring in groove and
press into place.

NOTE: 

This step is important to ensure a proper housing seal. Make certain

each O-ring is seated level in its groove or a leak may occur. 

5.

Screw bottom of housings with bleach water onto caps without filter car-
tridges and hand-tighten. DO NOT OVER-TIGHTEN. 

6.

Turn on water supply. Let faucet run for about 10 seconds, then turn off
faucet and let stand for 20-30 minutes. 

7.

Turn on faucet and allow bleach water to run out (about 3-5 minutes).

8.

Turn off water supply to system and open faucet to release pressure.
Remove bottom of housings and empty of water. 

9.

Insert each filter cartridge into appropriate filter housing: SY-2650: D-250A
Cartridge Set: White with green end caps in left housing.  Grey plastic
cartridge in right housing

10.

Screw bottom of housings onto caps and hand-tighten. DO NOT OVER
TIGHTEN. Make certain cap standpipe slips into cartridge. 

11.

Open water supply valve and turn on drinking water faucet to release 
pressure in system. Let faucet run for 5 minutes to remove trapped air
and carbon fines. Check system for leaks before leaving installation. 

12.

Press blue reset button.

NOTE:

• It is recommended that you run the tap at least 20 seconds prior to using

water for drinking or cooking purposes.

• Initially, filtered water may appear cloudy. If you set a glass of water on a

level surface, you should be able to watch the cloudiness disappear from
the bottom of the glass upwards This harmless cloudiness results from the
release of trapped air within the cartridge and will disappear within a few
weeks after installation.

Troubleshooting

Leaks:

…between cap and bottom of filter housing

Turn off water supply valve and turn on drinking water faucet to release pressure in
system. Remove bottom of housing. 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. Turn on water supply valve and check for leaks. 

…on system inlet/outlet connections

Turn off water supply valve and turn on drinking water faucet to release pressure in
system. Remove tubing from fitting (see NOTE under Step Six: Connecting the Supply
Adapter on p.3) and make sure end of tubing is cut squarely and free of scratches or
burrs. Reinsert tubing into quick-connect fittings, making sure to push securely until
tubing hits a hard stop. Turn on water supply valve and check for leaks.

…on supply adapter connection

Turn off water supply valve and turn on drinking water faucet to release pressure in
system. Loosen leaking threaded fitting on supply adapter or pull out leaking tubing
from fitting. Inspect to see if plastic tubing is scratched or supply adapter was properly
attached. If tubing is scratched, cut off 1/2-inch to 5/8-inch and reinstall per Step
Six: Connecting the Supply Adapter. Reconnect tubing or tighten compression nut with
fingers, then tighten nut snugly 1/2-turn with wrench. Turn on water supply valve and
check for leaks.

…on faucet/tubing connection

Turn off water supply valve and turn on drinking water faucet to release pressure in
system. Loosen and remove compression nut fitting on faucet stem. Make sure tubing
is inserted firmly into end of faucet stem, then retighten compression nut with fingers
until secure then tighten 1 turn with a wrench. Turn on water supply valve, then turn
off faucet to check for leaks.

NOTE:

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

Call our technical support department at 1-800-645-5426.

Low Water Flow

1.

Check flow at faucet.  The SY-2650 system should fill a gallon jug in approxi-
mately 2 minutes. Flow rates will vary with individual household water pressure. 

2.

Check filter cartridge installation. Make certain both filter cartridges are properly
oriented in filter housings (See Filter Cartridge Replacement on p. 5).

3

.

Check to be certain that the water supply valve is completely open (turn handle
on valve counter-clockwise as far as it will go).

4.

Check flow through empty system. To do this, turn off water supply valve and turn
on drinkingwater faucet to release pressure in system. Then remove filter
cartridges from housings and screw housings back onto caps. Turn on faucet to
check flow through empty system.  Flow should be about one to two gallons per
minute. If flow is less than 0.4 gallons per minute, call Technical Support at
1-800-645-5426. 

5.

If flow through empty system is adequate, place one filter cartridge in system at 
a time and check flow to make sure cartridge is not clogged. Replace clogged 
cartridge if necessary.

Summary of Contents for SY-2650

Page 1: ...hlorine Class I and Particulate Class I Standard 53 for the reduction of MTBE Lead Mercury VOC Cyst Asbestos and Turbidity Monitored MTBE Filtration System Installation and Operating Instructions Model SY 2650 About Your CULLIGAN Monitored MTBE Filtration System Thank you for purchasing a Culligan Monitored MTBE Filtration System With only minimal maintenance your new system will provide you with ...

Page 2: ...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 Do not attempt to drill through an all porcelain sink If you have an all porcelain sink mount the faucet in pre drilled sprayer hole or drill through countertop next to sink The following instruc...

Page 3: ... kinking and cut the tubing squarely Place a mark 5 8 inch from the end of the tubing B Wet tubing with water and insert into supply adapter 5 8 inch until mark is flush with 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 easi...

Page 4: ...o ensure that the monitor works properly The monitor measures actual water usage and is powered by a single 9 volt battery How the Electronic Monitor Works The filter cartridges in the SY 2650 should be replaced every 500 gallons The electronic monitor uses a combination of lights and alarms to alert you at different stages during the life of the filter cartridges The lights are visible on the fro...

Page 5: ...een cap and bottom of filter housing Turn off water supply valve and turn on drinking water faucet to release pressure in system Remove bottom of housing 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 Turn on water supply valve and...

Page 6: ...le 0 0096 98 0 0002 trichloroacetonitrile 0 0015 98 0 0003 haloketones HK 1 1 dichloro 2 propanone 0 0072 99 0 0001 1 1 1 trichloro 2 propanone 0 0082 96 0 0003 heptachlor 0 0004 0 08 99 0 0004 heptachlor epoxide 0 0002 0 0107 98 0 0002 hexachlorobutadiene 0 044 98 0 001 hexachlorocyclopentadiene 0 050 0 060 99 0 000002 lindane 0 0002 0 055 99 0 00001 methoxychlor 0 040 0 050 99 0 0001 pentachloro...

Page 7: ... 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 NOTE Substances reduced are not necessarily in your water Filter must be maintained according to manufacturer s instructions including replacement of filter cartridges Test Conditions Flow Rate as noted for filter system ...

Page 8: ...product has been designed solely for use as a housing for a disposable filter cartridge It is NOT warranted against freezing and neither this product nor its parts is warranted against defects or deterioration caused by uses for which this product was not expressly intended THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED WHETHER ORAL OR ARISING BY USAGE...

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