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The grains are lifted and allowed to drain completely. (usually less than 5 minutes) If you would like to pour hot water over them to sparge, this can be done. I have occasionally used a tea kettle to provide this sparge water but the change in efficiency is minimal. Single container (brew in a bag) brewing is simpler partially because of the removal of this step. Check your efficiency without sparging and see if you think it is necessary. You might be surprised.
Thanks for the catch. Here you go. http://www.highgravitybrew.com/store/pc/Electric-Kettle-Controller-269p3084.htm
Simple all grain electric beer brewery BIAB