Hartke HA 3500 cooling fan

**81precision** · #1 12-11-2011, 06:39 PM

Having just bought a used 3500 the fan seems a bit loud to me when using at low volume. Is this normal for this model or is it going.

grendle · #2 12-11-2011, 06:42 PM

They are a little loud, but it shouldn't make grinding or airplane noises. If so replace it.

**81precision** · #3 12-11-2011, 06:51 PM

Sounds like a small vacuum. Running smoothly. May order one just for piece of mind.

grendle · #4 12-11-2011, 07:10 PM

That's about right. The volume comes from the fin design, flow, and RPM. As long as its not grinding or oscillating its fine.

**81precision** · #5 12-11-2011, 07:26 PM

The fin design makes sense. Just seemed worth looking into but with your input , its fine. Louder than I've known in the past. Thanks !!!