Prefilter Installation Instructions

There are two orientations to the housing

1)      Upright and hung inside the sink cabinet

2)      On the counter top with the canisters facing down

Pre-filter Priming

  1. Using the Circular wrench provided remove all filter cartridges from the housing. Please remember the direction the cartridges were placed inside of the housing since you will be placing them back in the housings in the same order..
  2. Rinse the housing canisters and the base to ensure that there is no debris inside
  3. Replace the fluoride cartridge into the first position with the end towards the base that was originally in that position (this is the first canister to the water inlet). The cartridges only go in one way so remember the way you took them out. Reattach the canister to the base.
  4. Reconnect the other two housing canisters to the remaining positions setting the other two cartridges to the side
  5.   Go on to the next steps to connect the pre-filter to the water supply

Connecting to the Water Supply Under the counter

  1. Attach cold water adapter(John Guest Speed-fit  3/8” x 3/8 MPT that connects to the cold water line)
  2. Connect the 1/4” tube to the cold water adapter and the other end to the 1/4” speed-fit on the filter housing. If you cut the tube to fit ensure that the cut end is square.
  3. Install the faucet drilling a hole in the sink as necessary.
  4. Connect the ¼” tubing to faucet using the proper line insert and sleeve to create a pressure fitting on the faucet side.
  5. Connect the other end of the 1/4” tube to the filter.
  6. Perform the Pre-filter Priming steps below:

 Connecting to the Water Supply Counter top

  1. Cut  cold water splitter (John Guest Speedfit  3/8” x3/8 NPT that connects to the cold water line)
  2. Connect the 3/8” tube to the cold water splitter and the other end to the 3/8” speedfit on the prefilter. If you cut the tube to fit ensure that the cut end is square.
  3. Install the faucet drilling a hole in the sink as necessary.
  4. Connect the ¼” tubing to faucet using the proper line insert and sleeve to create a pressure fitting on the faucet side.
  5. Connect the other end of the 1/4” tube to the filter.
  6. Perform the Pre-filter Priming steps below:

 Pre-filter rinsing 

  1. Turn the water on gently at the john guest angle stop.
  2. Ensure that the filter hose connection is not leaking.
  3. Allow the water to run through this filter for about 5 minute so that the cartridge can be primed and the initial discharge has been cleared. The water will look milky at first
  4. Now Remove the Second Canister housing
  5. Place the KDF-55 inside in the same orientation as before
  6. Reattach the Canister housing
  7. Turn the water on and rinse this cartridge the same allowing the water to run for at least 5 minute
  8. Now Remove the third Canister housing
  9. Place the Carbon Block inside in the same orientation as before
  10. Reattach the Canister housing
  11. Turn the water on and rinse this cartridge the same allowing the water to run for at least 5 minute
  12. Turn the water on
  13. Allow the water to run for 5 minutes
  14. Look for leaks
  15. Taste test the water and enjoy.