Meanwell Power Supply Fan
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Just got a 600w 24vdc Meanwell power supply and the fan is very noisy. Am I just unlucky or are they quite noisy?
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@Dave-Parry I'v seen 600W 24V from MW in 2 cases, one with a single relatively small fan that's super loud and one with IIRC 8cm fan that's rather silent. I tweaked the loud one with PWM controller temp activated but what ppl often do is take the cover off, print a new cover and attach a big quiet fan.
Now "loud" should only be a lot of air going trough so "shhhhhh" sound, no rattling buzzing and similar you hear from low end PSU's, if you hear anything other than air the fan is probably broken
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This is the power supply internal fan.
Judging by the screw spacing its a 60mm fan.
Also just listening to it the noise seems to be from the centre of the case so maybe not the fan. -
@Dave-Parry yes, psu internal fan attached to the case cover, if you remove case cover and the fan and print a new case cover you can put bigger quieter fan. there should be nothing in the mw inside that makes noise other than the fan, they are pretty nicely built so they don't hum nor whine, if it does it's either faulty or a knockoff
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Thanks Arhi, have contacted seller so see what he says. Have also contacted uk distribituter who thinks it is genuine so not a knock off.
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the 50-60mm ones are loud ... ppl are using mufflers (I never tried but it is easy print so you can try), something like these
https://www.thingiverse.com/thing:4631303
https://www.thingiverse.com/thing:4623971what I used myself are this type of replacement covers:
https://www.thingiverse.com/thing:3279656
https://www.thingiverse.com/thing:3872625
https://www.thingiverse.com/thing:3197058
https://www.thingiverse.com/thing:3985846(I doub't any of these will fit the 600W one but you get the idea, it's a rather simple thing to design)
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you got the wrong mean well psu
https://www.meanwell.com/webapp/product/search.aspx?prod=UHP-750
or
https://www.meanwell.com/webapp/product/search.aspx?prod=HEP-600 -
The one I have is this one.
https://www.meanwell.com/productPdf.aspx?i=469#1
The fan is on the end of the case
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@arhi I printed the first one, didn't reduce the noise on a chinese knock off 24v power supply.
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I bought an RSP-500-24. Silent until the jet turbine of a fan turned on.
It was so loud I couldn't take the noise anymore and bought a fanless unit, the HEP-600-24. The entire case is a heatsink. There is no fan at all and it is silent. It was quite expensive though at more than twice the price of the unit with a fan.
It has been running my Ender 5+ with a volcano hotend for about 6 months with no issues.
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Meanwell make fanless, quiet and not-at-all-quiet power supplies. Datasheet says high power density, that usually translates to noisy fans; and noisy is quite subjective. But to echo arhi; if its just air then thats normal, but if it sounds like a dying giraffe it may have issues with bearings or balancing which is unlikely on a genuine supply.
Not sure if relevant for you but did you read the notes in the datasheet you linked to? At a glance it's not suited for use in the EU. (which is the case for a few of the meanwell supplies i looked at)
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Fans in power supplies can be very noisy, especially if the power is high and the fan is small.
Meanwell have the UHP series of fan-less power supply in a wide range of power specification. They are high quality, high efficiency, and very quiet.
https://www.meanwell.com/webapp/product/search.aspx?prod=UHP-750
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@tas said in Meanwell Power Supply Fan:
I bought an RSP-500-24. Silent until the jet turbine of a fan turned on.
It's super noisy, every minute or so, with a very small and high RPM fan that made my 3D printer very unpleasant.
It went back to Amazon and I got a fan-less one instead. -
@zapta said in Meanwell Power Supply Fan:
https://www.meanwell.com/webapp/product/search.aspx?prod=UHP-750
I bought it through amazon, and I have just heard back from the supplier who suggests taking the covers off and looking inside. Not sure if I want to do that as it may cause warranty problems. Also I don't think its the fan. sounds like transformer noise to me and its the opposite end of the case to the fan.
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I have one of these noisy MeanWell power supply. The issue is that the fan does not turn at all until the temperature goes above a threshold, then runs at full speed. This is non-sense, as it could run slowly all the time, at a lower speed to prevent temperature rising, remaining silent.
A solution would be to use a 24V fan and constantly powering it up under 12V (12V build from 24V)...
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I use ton of MW psu's and I never opted to use the ones with fan on the "front/back" as they have to be noisy as $#^^@$^@$ .. so that one is expected to be loud, too much power in a very small package
need to cool it down..@Stephen6309 I have not tried those mufflers as I said so have no clue if they work, ppl designing them claim they do. I used the cover replacement technique - you get the top cover off and you print replacement where you put 12cm fan
.. makes the case 2cm thicker (for the thickness of the fan) but quiet ... I also tend to select fanless PSU's and do the same thing to them, with a quiet slown down 12cm fan they last forever..
