10" inline fan with a speed controler...

Whats up everyone..

Got all my new gear in finally and had some questions for people who use speed controllers...

I got a 10" inline fan to cool my hood (600w) and a fan controller to slow it down for less noise. The only problem is that when using the speed controler to slow it down the fan makes a loud buzzing noise but still works as intended. Was wondering if this is normal?

The noise from the wind and such is minimal when using the controler but again it has a weird buzz noise thats sort of loud. Its not there when I crank the fan to full. Trying to figure out if either one of them is defective.

Thanks in advanced!

See if this helps you out:


http://www.tcf.com/TCFBlower/pdfs/engr_data/ED1000.pdf

Quote:

---

Originally Posted by GetThisOrDie

Whats up everyone..

Got all my new gear in finally and had some questions for people who use speed controllers...

I got a 10" inline fan to cool my hood (600w) and a fan controller to slow it down for less noise. The only problem is that when using the speed controler to slow it down the fan makes a loud buzzing noise but still works as intended. Was wondering if this is normal?

---

Yep, it's the nature of the beast.

I'm guessing your using something similar to a "Speedster" electronic controller, that varies line frequency. Some fans are better than others, but they will all *buzz* to some extent when throttled down.

If it is really objectionably loud, check to see if there is excessive shaft clearance on the fan. With the fan OFF :D, see if you can wiggle the impeller around. If it's wobbly, you oughta ask about a replacement.

Same thing happened to me when I bought a speed controller. I returned mine. If you find a solution to the problem please post it.