I follow the instructions I read somewhere online, after use, I flush for a few minutes with water, then before use I heat up my HLT to boiling, and hook up the transfer hose to the HLT and fill the CFC with boiling water and leave it there for a few minutes, let it flow out and leave it filled again for a few minutes, then flush it with the balance of whats in the HLT. so by the time it's done it's had 10 minutes or so of boiling water in it. the only thing you need to do after you hook up your Boil Kettle is catch the first cup or so pg what comes out in another container.
JQ