Get your keg coupler and run in 5L hot PBW from your fermenter via your PVC or silicon hose to the beer out on the coupler. Remove the little ball in the beer out of the coupler first so it can get in.
Shut off the tap and roll it around and make sure it gets a good cover inside for 30 min.
Open the coupler and release any pressure. Point it away from you so you dont get a shower.
Turn it upside down and let the liquid run into a bucket out the gas in. A bit of PVC tube can help here too. I sit the keg on a couple of saw horses so you can get at the tap and gravity helps get the liquid out.
Once empty, repeat the process twice or thrice with hot water.
You can run a bit of starsan or iodophor through the same way if you want really clean.
To fill I place the keg upside down under the fermenter and run the beer in the gas in and when beer runs out the beer out the keg is full.
All done with the spear intact.
To gas, put on 40psi for 2 days and away you go.
They are heavy buggers though. The cornys are much easier.
Haven't replaced any seals yet, I'll let you know when I do.
