I hope this is the proper area for this post as it has to do with both the Kreepy Krawly style cleaners and pool plumbing The pool header has 3 unmarked valves leading to the pump previous owner stated they controlled the pool floor drain and skimmers. No information on which one each is associated with. My question is when I use the KK to clean the pool to waste do the skimmers and main floor drain/skimmer valves need to be shut to prevent excess water drainage. Apologies if this is a simple question, I am brand new to pools and want to be sure. Thanks for any insight.