Pentair OmniFilter U25 Water Filtration System User Guide

Pentair OmniFilter U25 Water Filtration System

OPERATING SPECIFICATIONS

• Flow Rate: 5 gpm
• Pressure Range: 25–125 psi
• Temperature Range: 40°F–100°F

PRECAUTIONS

Carefully read and follow instructions.

• WARNING: Risk of electrical shock. If your water pipes are used to ground your house’s electrical system, install a No. 8 AWG (8.4 mm²) jumper wire (or larger) around the filter. The jumper wire must be connected at both ends by a pressure wire fitting or other connection that satisfies NEC or CEC and local codes. Consult a building inspector or licensed electrician for more information.
• WARNING: Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
• 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 bottom of the housing. It is important that the o-ring be properly seated in the groove above 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 five years for clear and every ten years for opaque. 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.
• CAUTION: Do not use electrical heating tape on this unit.
• CAUTION: Clear housings may crack or craze in time, causing failure and leakage if exposed to organic solvents, such as those found in aerosol sprays for cleaning products and insecticides.

NOTES:

• For cold water use only.
• The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water. Ask your local water municipality for a copy of their water analysis, or have your water tested by a reputable water testing lab.
• Do not install where the system will be exposed to direct sunlight.
• Filter cartridge life varies depending on filter type, usage, and water conditions.
• The replacement filter cartridge used with this system has a limited service life. Changes in taste, odor, or flow of the water being filtered indicate that the cartridge should be replaced.
• Use only OMNIFILTER replacement cartridges.
• This installation must comply with all applicable state and local regulations.
• Use only the plumber tape without adhesive backing to seal joints. Do not use pipe compound (pipe dope), sticks, or similar compounds with this unit; they contain petroleum derivatives, which will cause crazing and cracking of the plastic in the filter housing.
• Use only soap and water to clean the filter housing and components.
• Do not use aerosol sprays (bug spray, cleaning fluids, etc.) near the filter. They contain organic solvents, which will cause crazing and cracking of the plastic in the filter housing.
• After prolonged periods of non-use, such as a vacation, it is recommended that the system be flushed thoroughly. Let water run for 5–6 minutes before using.
• Do not use a torch near the unit.
• Some harmless bacteria may attack cellulose media cartridges (such as the TO1 or RS1). If your cartridge seems to disintegrate or develops a musty or moldy odor, switch to a synthetic media cartridge or consult the manufacturer.
• An activated carbon cartridge may contain a small amount of carbon fines (very fine black powder). A new cartridge, after installation, should be flushed with sufficient water to remove the fines before using the water.
• Wear safety glasses during installation.

INSTALLATION INSTRUCTIONS

NOTE:

• Please read all instructions, specifications, and precautions before installing and using your water filter.
• There must be a shut-off valve before the filter.
• Install the filter after the water meter or the pressure tank.
• Before installing the filter, determine where the unit will be located and what type of pipe the unit will connect to. The filter head has 3/4-inch NPT threaded connections molded into it. The distance from the top of the water piping to the floor must be at least 15 inches for filter change allowance. Allow a 1-1/2 inch clearance below the housing to allow for changing the cartridge.

1. The recommended installation has a shut-off valve on both the inlet and outlet sides of the filter. The installation shown uses copper piping. The weight of the filter should be supported so it does not stress the pipes. The main house water shut-off valve can be used as the inlet side shut-off valve.
2. Apply about three wraps of plumber’s tape in a clockwise direction to the pipe threads of each fitting.
3. Assemble all fittings. Start the adapters into the cap by hand. Use a wrench to tighten firmly. DO NOT OVER-TIGHTEN.
4. Measure length (shown as X on diagram) across assembled fittings and subtract 1 inch if you are installing on 3/4-inch pipe, or 1-1/2 inches if you are installing on 1-inch pipe. Mark the section of pipe to be removed.
5. Turn off the main water supply valve and open a faucet on the lowest level of your home to drain the system. Cut the correct length of pipe. Use a pipe cutter or hacksaw. File or sand the ends of the pipe to make sure they are smooth and square. NOTE: Have a bucket handy to catch any water that may come out of the pipe.
6. Align the filter assembly with the ends of the pipe, making certain the cap opening marked “IN” is facing the incoming water supply. It will be necessary to spread the ends of the pipe apart to install the filter assembly. Using two adjustable wrenches, hold the incoming adapter securely with one wrench and tighten the nut with the second wrench. Repeat the procedure for the outgoing adapter. Slowly turn on the water supply to the filter and depress the red pressure-relief button on the cap to release trapped air. Check for leaks. Open the nearest faucet and flush for 10 minutes, wait one hour, then flush again for 10 minutes.

WARNING: Risk of electrical shock. If your water pipes are used to ground your house’s electrical system, install a No. 8 AWG jumper wire (or larger) around the filter (see Figure 5). The jumper wire must be connected at both ends by a pressure wire fitting or other connection that satisfies NEC or CEC and local codes.

FILTER CARTRIDGE REPLACEMENT

The cartridge’s life depends on the water volume used and the substances in the water. Normally, the cartridge should be changed at intervals of 90 days or less. Replace it sooner if the water pressure at the faucet begins to drop noticeably or if you notice changes in the taste, color, or flow of the filtered water. NOTICE: Certain types of harmless bacteria will attack cellulose material. Cartridges containing cellulose, such as TO1 and RS1, may seem to disintegrate, produce a “sewer” or “rotten egg” odor, or form a black precipitate due to bacteria. If this happens, consult OMNIFILTER Customer Service for advice.

• (1) Turn the water off by rotating the handle on top of the housing in a clockwise direction. NOTE: This will shut off all water flow within the household. Be sure to fill a bucket of water first so you may clean the housing after it has been removed. (2) Remove the bottom of the housing by turning clockwise.
• Locate and remove large o-ring (3), wipe clean of lubricant, and set aside. Discard used cartridge (4). Rinse out the bottom of the housing and fill 1/3 full with water. Add 2 tablespoons of bleach and scrub the cap and bottom of the housing with a non-abrasive sponge or cloth. Rinse thoroughly. Lubricate the o-ring (3) with clean silicone or plumber’s grease. Insert the o-ring back into the groove and smooth it into place with your finger. NOTE: This step is important to ensure a proper housing seal. Make sure the o-ring is seated level in the groove. Insert the new cartridge (4) over the standpipe in the bottom of the housing.
• (5) Screw the bottom of the housing onto the cap and hand-tighten. DO NOT OVER-TIGHTEN. Make certain the cap standpipe slips into the cartridge. (6) Slowly turn the handle on housing 1/4-turn counterclockwise to allow the filter to fill with water. (7) Depress the red pressure-relief button to release trapped air, then rotate the handle fully to the “ON” position. Flush the cartridge for 15 minutes before use. Check for leaks before leaving the installation.

TROUBLESHOOTING

Leaks . . .between the cap and the bottom of the filter housing:

1. Turn off the water supply and press the red pressure-relief button. Remove the bottom of the housing.
2. Clean the o-ring and o-ring groove (located directly beneath the threads of the housing). Lubricate the o-ring with clean silicone or plumber’s grease and replace securely into the groove. Screw the bottom of the housing onto the cap and hand-tighten. DO NOT OVER-TIGHTEN.
3. Turn on the water supply. If leaks persist or if there are other leaks in the system, turn off the water supply. Call OMNIFILTER Customer Service at 800.279.9404.

On inlet/outlet connections:

1. Turn off the water supply. For brass fittings, tighten the nut snugly about 1/2 turn with a wrench.
2. Turn on the water supply. If leaks persists, or if there are other leaks on the system, turn off the water supply. Call OMNIFILTER Customer Service at 800.279.9404.

REPLACEMENT PARTS

For replacement parts, contact your nearest OMNIFILTER retailer or call 800.279.9404. For further operating, installation, maintenance, parts, or assistance: Call OMNIFILTER Customer Service at 800.279.9404 or visit www.OMNIFILTER.com.

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Pentair OmniFilter U25 Water Filtration System-FAQs