Alright so I just got a new pump rated at 180 watts putting out 150L/min. I set it up to my central air system, pipe in a loop, to 10 tanks and 20 outlets. It was on about an hour and when I checked on it it was really hot to the touch. Just looking for an idea of what this could be or why anyway. I've read that others do run hot in this size range but I don't want to destroy it before I get any use of of it so any thoughts would be appreciated. It's a no name "ac-012"