I received a phone call just after knock out and ended up running my immersion chiller for about 2hrs. To my surprise, I found that my volume had increased by a little less than a gallon. It took me a second to figure out that the culprit was the 15 year old hose clamp and tubing at the top of my IC. I wonder how many batches it leaked into? I haven’t had any contamination problems, but the thought of it gave me the willies.
I suppose it’s not a bad idea to periodically run an IC in a dry bucket to proof the hose clamps and tubing seals.
This came out of left field, so I thought it might be worth passing along.
Two hours? Dang. Must’ve been an important phone call. Ya couldn’t just say, “Hey, gotta do something quick, let me give you a call back”?
Either way, sucks it leaked like that. My chiller has hose fittings on it, so it’s not as much of an issue. I had it leak once so I make sure the hose is on tight enough before putting in to the boil.
I’ve noticed mine with a slow leak too and it’s only about 2 yrs old. I assume from heating and cooling, the tubing the connects to the copper loosens a bit and will leak from the one side (from the hot water out side, I think). I’ve had to tighten the clamps a few times. Next brew day I plan on pushing the tubing on further and adding a second set of clamps, two on each side.