How to quiet down a noisy inverter fan?
Hello, I have a cheap ebay PSW 300 watt inverter. But it works great for my needs. It has a cooling fan that only comes on when demand warrants it. But the fan has become really noisy, sounds like...
Forum Discussion
landyacht318 wrote:
There are a stunning array of computer fans available in all sizes. While I'd definitely remove the fan, peel off the sticker and lube the bushing, i would also snap a pic of all the specs on the fan, and try to find its ratings, then find a ball bearing fan of similar specs.
Long time back I replaced the noisy fan in my MSW inverter, with the same exact fan, when i should have researched a bit more and got a better fan.
Some designs can move more air for less noise, and usually these designs have steeper angles on the impeller blades, more scythe like blades as opposed to a straight 45 angle. Also some fans have a smaller hub and more fan blade area allowing them to move more air for less rpm and thus noise.
google 'frozen CPU'
I doubt that the noise is coming from dry bearings, instead it comes from the HIGH SPEED of the fan..
The smaller the fan, the FASTER it must run in order to get a lot of air flow..
The BEST way is to find a NEW fan of same size but with a slower RPM motor..
What needs to be done is to take the model number of the existing fan, do a internet search for the specs.. Typically you want to get the CFM, RPM and noise rating.
Then you search for a fan that has a lower RPM/noise rating that has about the same CFM..
Personally, the OPs noise issue is one of many good reasons to avoid purchasing stuff from Ebay..
You can find plenty of inverters on Amazon and if you don't like it you can easily return it.. Sometimes it is better to pay a little more upfront than to be cheap, buy cheap then spend time and money making it LESS cheap..
