my washing machine is not draining and so i have a machine full of clean washing (maybe) all ready but can't be emptied cos full of water. i see from previous posts that i should disconnect the drain pipe and empty it in to a bucket. how do i know which is the drain pipe? don\\\'t have the manual and no idea who plumbed it in. there are three pipes coming out the back: grey ribbed one, a red and a blue. and at what point do i disconnect it? please help, my nice clothes are meanwhile sitting in horrid old water!