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...
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ewarnerusa wrote:
OK, I've opened it up and taken a photo of the fan label. I've put a few drops of oil on the fan axle beneath the sticker. I'm now googling this model number and looking for something with comparable specs. I'm navigating the Jameco Electronic link now. this fan is about 1 9/16"/40 mm on each side and 3/4"/20 mm deep.
4020 is the size, not sure about the S, the 12 is voltage and the H is most likely the air flow..
Unfortunately that appears to be a off brand Chinese motor which is made for that inverter and no real specs are available..
You can however take a cue from the current draw of .17A.. That is about the same draw as most P4 Pentium processor heatsink fans.. I would guess at a min of 10 CFM..
I found a 1U server powersupply fan which is 40x40 15 mm deep that would most likely come close to the CFM.. I can't find actual CFM or noise specs though.. They do run very fast (5K+ RPM) and have a pretty high pitch sound..
HERE
