F-801 Internal RO System by GE Osmonics

4.Carefully remove the housing (bottom part) from its head. Empty the water and used pre-filter cartridge.

5.Inspect the central core of the used pre-filter for dirt or rust. If discoloration is present in the cartridge interior, the filter has been in service too long and should be replaced sooner, or at a delta pressure lower than 8 PSI.

6.Check the O-ring in the groove of the filter housing. Replace the O-ring (GE Osmonics p/n 40694) if it appears worn or damaged.

7.Clean and rinse the pre-filter housing.

a.Optional; a 1% bleach solution may be used to sanitize the housing, rinse thoroughly.

8.Insert the new pre-filter cartridge into the housing. Ensure that the pre-filter is firmly in place.

9.Re-install the housing, tighten clockwise.

10.Turn ON the feed water and check for leaks. This will also purge the air from the pre-filter housing.

11.If there are no leaks, the RO system is ready for use.

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Routine Maintenance