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MINI heat block fan replacement PWM and voltage  

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Patrik Zak
(@patrik-zak)
Active Member
MINI heat block fan replacement PWM and voltage

Hello,

I am looking into replacing the stock heat block fan on the MINI.

I figured the stock fan is 5V.

mini heater block fan 

Which one of these would work?

3-pin 5V
https://www.alza.sk/noctua-nf-a4x10-5v-d5464098.htm?o=33

4-pin PWM 5v
https://www.alza.sk/noctua-nf-a4x10-5v-pwm-d5716009.htm?o=41

Does anyone know which one I should buy?

Thanks!

Best Answer by JoanTabb:

Posted by: @hl2run

 

Which one of these would work?

3-pin 5V
https://www.alza.sk/noctua-nf-a4x10-5v-d5464098.htm?o=33

4-pin PWM 5v
https://www.alza.sk/noctua-nf-a4x10-5v-pwm-d5716009.htm?o=41

Does anyone know which one I should buy?

Thanks!

Hi, you appear to have your fan in front of you!, 

How many wires does it have?

I suspect the answer is three, but I don't have a mini, to confirm

Regards Joan

This topic was modified 3 years ago 4 times by Patrik Zak
Posted : 05/02/2020 6:20 pm
JoanTabb
(@joantabb)
Moderator
RE: MINI heat block fan replacement PWM and voltage
Posted by: @hl2run

 

Which one of these would work?

3-pin 5V
https://www.alza.sk/noctua-nf-a4x10-5v-d5464098.htm?o=33

4-pin PWM 5v
https://www.alza.sk/noctua-nf-a4x10-5v-pwm-d5716009.htm?o=41

Does anyone know which one I should buy?

Thanks!

Hi, you appear to have your fan in front of you!, 

How many wires does it have?

I suspect the answer is three, but I don't have a mini, to confirm

Regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 05/02/2020 7:21 pm
Clemens M.
(@clemens-m)
Noble Member
RE: MINI heat block fan replacement PWM and voltage

I had a broken fan on my Prusa i3 MK2.5S and wanted to replace it. Be aware that you by a fan with same rotational speed as the original. With the replacement (the MK2.5S has only 3 pins) I had lots of issues during printing because of "wrong" cooling. I ended up bying an official fan from Prusa.

Best regards, Clemens Mödlin

Posted : 05/02/2020 7:50 pm
Patrik Zak
(@patrik-zak)
Active Member
Topic starter answered:
RE: MINI heat block fan replacement PWM and voltage

@joantabb

Correct, 3 wires, but I was just not sure.

Thanks a bunch!

Posted : 06/02/2020 5:59 am
JoanTabb
(@joantabb)
Moderator
RE: MINI heat block fan replacement PWM and voltage

@hl2run

As far as I am aware the 4 wire fans, need an active PWM signal to be pumped into the fan, to drive the fan motor controller. which is a feature I have not seen on a 3D printer...   but then I have not got my hands on a Mini yet, so have little idea what the 32 bit controller can achieve. 

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 06/02/2020 9:55 am
3Dprintedgr
(@3dprintedgr)
Estimable Member
RE: MINI heat block fan replacement PWM and voltage
Posted by: @hl2run

Hello,

I am looking into replacing the stock heat block fan on the MINI.

I figured the stock fan is 5V.

mini heater block fan 

Which one of these would work?

3-pin 5V
https://www.alza.sk/noctua-nf-a4x10-5v-d5464098.htm?o=33

4-pin PWM 5v
https://www.alza.sk/noctua-nf-a4x10-5v-pwm-d5716009.htm?o=41

Does anyone know which one I should buy?

Thanks!

I would not recommend any of the fans you are showing here. With a quick search you can see that the characteristics are way different. If you wanted it for a pc air flow it may would be sufficient but in the case of a 3D printer it will cause many problems with layers.

Key differences:

  • While the rpm on Delta (Mini original) fan is 8000rpm the Noctua has 4500rpm.
  • Also the rated input current on the Delta is 0.11A  while on the Noctua is half 0.05A.
  • The most important characteristic is the air flow which in the case of Delta is 0.262 cubic meters/min while the Noctua has  0.1366 cubic meters/min which is again half. This means it cannot provide the same air flow to your 3D prints.
This post was modified 3 years ago by 3Dprintedgr

Original Prusa Mini + Smooth PEI
Prusa Slicer 2.2.0

Posted : 07/02/2020 6:53 pm
3Dprintedgr
(@3dprintedgr)
Estimable Member
RE: MINI heat block fan replacement PWM and voltage

First time uploading pics 😋 

Here are the datasheets from both fans. So I would recommend searching for a fan with the blue characteristics above.

This post was modified 3 years ago by 3Dprintedgr

Original Prusa Mini + Smooth PEI
Prusa Slicer 2.2.0

Posted : 07/02/2020 7:04 pm
Patrik Zak
(@patrik-zak)
Active Member
Topic starter answered:
RE: MINI heat block fan replacement PWM and voltage

@geoper2

Thanks so much! The Delta fan is really noisy, so I will look for other suitable replacement.

Posted : 07/02/2020 8:51 pm
Crawlerin
(@crawlerin)
Prominent Member
RE: MINI heat block fan replacement PWM and voltage

@hl2run

Have you managed to find suitable fan? 

Posted : 20/02/2020 6:51 pm
Patrik Zak
(@patrik-zak)
Active Member
Topic starter answered:
RE: MINI heat block fan replacement PWM and voltage

@crawlerin

Nope :(, crawled whole aliexpress with no luck.

Posted : 20/02/2020 6:52 pm
Argh
 Argh
(@argh)
Active Member
RE: MINI heat block fan replacement PWM and voltage
Posted by: @hl2run

@crawlerin

Nope :(, crawled whole aliexpress with no luck.

Do you think this one would work? Specs are close bit a bit more CFM and power.

https://www.digikey.com/product-detail/en/cui-devices/CFM-4010-03-20/102-4398-ND/6194962?utm_adgroup=DC%20Fans&utm_source=google&utm_medium=cpc&utm_campaign=Shopping_Fans%2C%20Thermal%20Management_NEW&utm_term=&utm_content=DC%20Fans&gclid=CjwKCAjwr7X4BRA4EiwAUXjbt7z9szkQ0NFe9mXGkj7720Vk6i3VbSVI24yc2xdK9bG8p4Gd1Icb7RoCDuwQAvD_BwE

Posted : 15/07/2020 1:08 am
Ambulocetus
(@ambulocetus)
New Member
RE: MINI heat block fan replacement PWM and voltage

Any updates on finding a quiet replacement fan? Bit of a shame noctua ones wont work

Posted : 28/09/2020 6:01 am
Patrik Zak
(@patrik-zak)
Active Member
Topic starter answered:
RE: MINI heat block fan replacement PWM and voltage

@tobz4321

nope

Posted : 28/09/2020 6:04 am
cwbullet
(@cwbullet)
RE: MINI heat block fan replacement PWM and voltage

I have these on both my MK3S and Mini: FTSETC Fans.  I also have a Noctua 3 pin 5V on a printer.  The Noctua is quieter and appears to cool sufficiently.    

--------------------
Chuck H
3D Printer Review Blog

Posted : 28/09/2020 2:17 pm
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