Fan test

dbelge · Post by **dbelge** » Thu Dec 05, 2019 4:16 pm

Hello,

I just got an A20M printer from a friend who does not want to use it anymore. Before using it myself, I would like to make properly the adjustments.

The first thing concerne the fans. I am not sur they are still working? Do you know a way to test them?

Thanks in advance

Post by **William** » Thu Dec 05, 2019 4:33 pm

Hi, the cooling fan is always on.
The PWM fan on the extruder housing was turned on after printing several layers,
The speed of the fan can be adjusted on the LCD screen

dbelge · Post by **dbelge** » Thu Dec 05, 2019 4:59 pm

Thanks for your answer!

Yes the cooling fan is on!

I have two fan on the extruder and I am not sure they are working. If I heat the extruder manualy, did they have to work?

Thanks in advance

Post by **William** » Thu Dec 05, 2019 5:31 pm

Hi, When you manually heat the extruder, the fan inside the extruder will also work

dbelge · Post by **dbelge** » Thu Dec 05, 2019 10:59 pm

I set the extruder to 201° and the fans does'nt start. Is that normal?

DzzD · Post by **DzzD** » Fri Dec 06, 2019 3:17 am

Is that normal?

No, they should start as soon as you power on the printer.

dbelge · Post by **dbelge** » Fri Dec 06, 2019 3:57 am

I have to test ifthe problem is the fans or the power.... Any idea how to do that?

Post by **William** » Fri Dec 06, 2019 9:25 am

Hi, You mean that when you turn on the printer, the cooling fan is not turned on;
You can measure the voltage on the port of the connected fan when the power is off.
During normal shutdown, there is no voltage. If the measurement is normal, the fan can be replaced.

dbelge · Post by **dbelge** » Fri Dec 13, 2019 5:14 pm

Hello,

Thanks for the answers. I changed the fans and everything seems to be fine now. I have to check the offset and adjust the bed....

Best regards

Geeetech

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