How do I fix a leak on the brine/drain line?

To fix a leak on the brine or drain line:

1. Remove the blue/orange locking clip
2. Press inward on the grey collet and pull the line free with your other hand 
3. Check the cut of the line and trim if needed 
4. Apply silicone grease or any food-grade oil to the end of the line 
5. Reinsert the line back into the quick connection
6. Test the leak with a new manual regeneration