What are the key points to consider when using a conical fermenter to drain the yeast and leave only clean beer? My goal is: removing yeast, with (a) few loss of beer, (b) have beer not remain with yeast particles (potentially caused from the turbolences of the yeast removal process itself)?
Just some short time ago I bought a 115 liters conical bottom fermenter in stainless steel. A main intention of this purchase was to reduce both workload and losses of beer when it comes to separate the fermeted beer from the remaining yeast cake, before botteling.
Ideally there is a valve at the very bottom of the cone, which when opening should help to drain the yeast, leaving only beer (at best without causing any sort of "cloudiness" or "haze" from turbolences). Unfortunately it does never seem to be the moment, that all the yeast was removed. The liquid drained from the bottom valve, after being initially thick, quickly turns liquid, yet is still of a "dirty with yeast" color and NOT clear beer.
I guess something I do is not ideal.
Maybe it is crucial (cannot be done elsewise) to have the fermenter being chilled down to a certain temperature? (yet I would think that the yeast should always be at the bottom, from my experiences with other fermenters, even at not extra cold temps.)
Maybe to open the it lower "yeast drainage valve" to be opened, it is indispensable, to have the airlock of the fermeter removed, so that no pressure build up or air enters through the lower valve?