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calaverajoe

Ender 3 Pro Power Supply Meanwell Baffler

by calaverajoe Jan 9, 2019
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Great concept and fits really good. Also reduces the noise quite a bit but it also causes the PSU fan on my Ender 3 Pro to run constantly instead of cycling on/off even after trimming out the baffles.

Ehm... dude, that fan ain't a blower it's a sucker.

I can assure you that on my Ender 3 Pro, on the Meanwell power supply, that fan is absolutely an exhaust fan, not an intake fan.

That's super strange, since my Ender 3 Pro definitely has an intake fan there instead.

Fan could be mounted / wired in reverse. For this particular PSU, intake or exhaust cooling are arguably equally effective, though dust build up inside the PSU will be worse with the fan acting as intake.

I used a small piece of paper to test with and it sticks to the PSU. So mine is definitely also an intake fan. Just got my Ender-3 Pro a few days ago.

But is this fan shroud a bad idea if it's an intake fan? When I hold it over my PSU it definitely reduces the noise. But perhaps it doesn't get enough air?

There is still a lot of noise. Maybe if the baffles were sinuous or zigzag, it would cut down on the noise.

The baffles aren't my design, I just remixed another design so it would fit the Ender 3 Pro PSU. On mine, I've found it to make a considerable difference in the sound volume from the PSU when the PSU fan is running. It won't make it silent, not by any measure, but it reduces the sound and redirects it some. Now that I have my PSU mounted to the underside of an enclosure, I hardly notice the fan going at all unless I'm actively listening to it. It's certainly quieter than the hot end fan, or the control board fan, or the printer when it's running, that's for sure. I'd imagine if you're still getting a lot of noise from the PSU fan with this installed, then something might be amiss with your fan.

Care to share how you have the PSU now? Quite curious to see how it looks...

It's just mounted to the underside of an Ikea Lack table as part of the enclosure using these: https://www.thingiverse.com/thing:3349588 and with the wiring routed back up through the table, nothing terribly revolutionary. I just didn't want the PSU living inside the enclosure for worry of overheating it.

Ender 3 / Ender 3 Pro - Underside PSU Mount
by DAVYcr