Kohler Aquifer Refine K-21371 Homeowner's Manual page 7

2. Install the Cartridges
Filter Head
Filter Cartridge
Key
NOTE: The filter cartridges require conditioning prior to use to remove air and
carbon particles. The filter cartridges will be arranged differently for cartridge
conditioning than when the cartridges are in use.
NOTE: The filter cartridges will only engage into the filter head one way. Do not
force the components.
Install the filter cartridges in the "New Cartridge Conditioning" arrangement.
Align the filter cartridge with the label to the left.
Press upward so the filter cartridge key engages into the filter head.
Rotate the filter cartridge counterclockwise 90° until it stops and is securely
engaged into the filter head.
Repeat for the remaining filter cartridges.
Kohler Co.
New Cartridge Conditioning
Green
7
Blue
Pink
1410821-5-B