I had a Kolsch that didn't drop krausen after 3 weeks. I've heard that cold crashing it will help it to clear and drop, but I didn't try it. I just racked underneath the foam into secondary, since my 5 gallon carboy fits in the fridge for cold conditioning time.
Primary #1: Empty #2: Empty
Secondary #1: Berry Rhubarb Wine #2: Black Currant Wine #3: Ice Shanty Bock
Kegged: Border Crossing Vienna
Bottles: 2H IPA III, Carmel Apple Cider, Spruced Winter Warmer, Big 50 Barleywine, Framboise Lambic, Dark Belgian Strong, Russian Imperial Stout, Sparkling Elderflower Wine, Barolo Wine, On Deck: ??