Finding the right spot to set your racking arm takes a bit of practice.  Depending on the strength of beer you are brewing, the amount of yeast pitched and other material that makes its way into your conical (trub, hop material etc.), the yeast cake bed height will vary.  We suggest you take notes from batch to batch and practice consistency once you find the right spot. If you are giving it a try for the first time, here is one way to test out the cake level.

  1. Start with the racking arm sideways when you fill the conical with wort and proceed with primary fermentation.
  2. Put a 1.5 TC X barb on the the butterfly valve ahead of the racking arm and attach a hose that empties into a bucket
  3. Slowly open the butterfly valve to see if the beer runs clean through the line, or is full of yeast.
  4. If full of yeast, try carefully loosening the tri-clamp around the racking arm and turning the arm up slightly. Re-test for yeast flow
  5. Repeat step 4 still the beer runs clean. You now know where the yeast cake bed is.
  6. If the beer ran clean in step 3, change step 4 to move the arm slightly down till you do pull yeast.
  7. Take note of where this batch/recipes yeast cake level is.

Pro tip:

You can lower the yeast cake of any batch by harvesting yeast/trub before pulling from the racking arm!