http://www.nifty-stuff.com/forum/viewtopic.php?id=311 is the thread, started by granddad, describing his cart purging technique. The entire thread has very good information regarding purging. My device, similar to Granddad's is on post #21 of that thread along with my drying technique. Since posting on that thread I now only use OEM carts. I use an old tank vacuum cleaner to pull as much water out of the carts as possible before setting them up for drying.
