Video: How to change the UltraStream filter cartridge – under-sink system

  1. First go under your sink and turn off the cold water tap which is on your cold water line.
  2. Put a bowl or bucket or put a towel under your UltraStream for a little leakage from the filter when you take it off the base.
  3. Now use your John Guest Tool (came with your under sink kit) or the tip of your finger to press the grey ring around the blue hose on the top of the UltraStream and pull the blue hose out at the same time.
  4. Next, take out the Grey John Guest Converter on the top of your UltraStream in the same manner as above.  (You will need this Grey John Guest Converter to put into your new replacement filter)
  5. Next you will need to unscrew the filter from the base.  The do this, take off the base plate with the two holes as this will give more grip (maybe required) to unscrew the filter. Unscrew the filter and take off the rounded cover at the top of the unit.
  6. Screw the new filter onto the base.  This doesn’t need to be really tight just firmly screwed on.
  7. Put in the Grey John Guest Converter as far as it will go and then put the blue hose into the John Guest Converter.  Push in as far as it will go.
  8. Put the base plate and cover onto the new replacement filter which you have just installed.
  9. Turn on the cold water tap and check for leaks.
  10. If there is a leak check make sure you have put the blue hose is as far as it can go and make sure the filter is screwed on enough to prevent a leak.