My CFC acted clogged, sending me scrambling to get an ice bath going and doubling the amount of time needed too cool my wort. When I was cleaning up I noticed the CFC wasn't clogged at all...what happened?
Water turned on? Kink in the hose? You should check water flow before setting chiller into hot wort maybe heat + leftover water created steam pressure had to say, I always run water through chiller before it enters kettle.
I had this same thing happen my last brew day. I thought my ****** burnt up my pump. So I blew on the hose to cfc and it went through. On clean up my pump and my cfc worked as advertised so I also don't know what the hell was going on
I noticed mine will act plugged if I don't fill it with sanitizer and basically start a siphon when i'm ready to drain the kettle. It has something to do with the fact that my pickup tube runs uphill to my weldless fitting.
I pump (push into) my CFC so it's never been an issue. I have some 'ups and downs' in my design so i can imagine vapor lock potentially being an issue if it was gravity fed.
i don't throttle for cooling, the cfc is 50ft (1/2" coil) with two separate cooling sections so i can pump at max flow. Cost about $60 or so in parts, and lots of labor of course : )