That looks very similar to the fan I have. I have the auto turner in there and not a lot of room left, so I put the fan on its side along the back wall, so it's blowing across the eggs. My fan has 2 or 3 levels of how hard it blows, I keep it at the lowest level. Just enough to move the air around. Here's what it looked like:
View attachment 2649143
Get some cheesecloth and wrap the fan with it to prevent little toes, wings or beaks poking between the guard pieces and getting cut. The blades are soft silicone and don't really cut, but chicks are so delicate that even that can be too much. Last year I didn't have anything over the fan, and woke up to blood everywhere from a chick getting its toe hurt in the blades

After I put the cheese cloth on, I've had no accidents - no more last year and none this year with my new brood.