I broke the Fan/alt belt today - what are you using on your car?

Usually when they roll like that, they are too tight.

I'm pretty sure they were tight but I was also able to get good deflection per the service manual. I plan on buying new good year belts and swapping both the steering and fan/alt.

Digging a bit further today I found that while I rotate the pump in the clockwise normal running direction I hear a moan and I can feel the rubber impellers dragging but when I rotate counter clockwise It's guiet with no drag. Can the impeller blades flip? Check out the video