ページを印刷するFilter Cartridge Replacement Procedure:
1. Turn off the water supply to the system using the shut-off valves you installed on the inlet
and outlet of the filter housing. Depress the red pressure release button on the top of the
filter housing cap to allow any pressure inside the housing to escape, thereby allowing the
blue filter sump to be removed easier.
2. Unscrew the blue sump (bottom of the housing) from the cap using your spanner wrench
(included with original purchase of your system).
3. Locate and remove the large O-ring. Try not to remove any of the lubricant. The housing
O-ring should be replaced at least once annually or at each filter change if any damage to
the O-ring is noted (kinked, cracked, stretched, etc.), or if any leakage between the black
housing cap and the blue housing sump is detected and does not seal after tightened with
the spanner wrench. Put the O-ring in a safe place where it will not get dirty or otherwise
contaminated. Replacement O-Ring: Pentek Buna-N Big Blue O-Ring #151122
4. Take out the old filter cartridge and discard it.
5. Scrub the bottom of the housing and cap with dish soap and warm water using a sponge or
soft cloth. Fill 1/3 with water and add about 2 tablespoons of household bleach. Scrub to
disinfect (we recommend that you use rubber gloves). Rinse all parts thoroughly!
6. Lubricate the O-ring with food-grade silicon lubricant if needed. Insert O-ring in the
groove at the top of the blue sump and press into place. Make sure the O-ring is
seated level in the groove!
7. Remove the protective plastic wrapping from the new filter cartridge and insert the
cartridge into the housing sump, making sure that it slips over the standpipe in the bottom
of the housing.
8. Screw the blue sump onto the black housing cap tighten using the spanner wrench. Do
not over tighten.
9. Turn on the water supply slowly to allow the system to fill with water. Depress the red
pressure release button on top of the unit again to release any trapped air. Inspect
carefully for leaks. If a leak is found, first inspect the O-ring to ensure that it is seated
properly before tightening the sump more. Tighten using the spanner wrench as necessary
to achieve a good seal and stop leaks.
10. New cartridges may contain "fines" (very fine black powder) after installation. Flush the
system by running water from a nearby faucet for 5 minutes. Wait one hour, and flush
again for another 5 minutes prior to using the water.