I just switched from using a peltier device to small chest freezer filled with glycol for cooling. What a difference, the fridge temp drops vertically when the cooling cycle starts. All was working great for about 30 minutes then the pump failed, I tried a second pump and that failed after the same amount of time. I’m using a cheap pump off ebay which doesn’t state minimum temp, I guess it can’t handle glycol at -20C though.
Can anyone recommend a cheap pump that can cope with the glycol temp?
I didn’t have glycol yet, but I wasn’t cold crashing, so it wasn’t really needed.
But due to a dumb mistake, the water froze. When the ice melted again, smoke emerged from the ice. Accompanied by a smell of burnt electronics. Note that the pump was powered while being frozen in ice.
Update: after the ice around the pump had fully melted, I tried the pump again. Despite the smoke and burnt electronics smell that came from the ice, the pump still seems to work!
So yeah, I would recommend the SS brewtech pump :).