Fan test

[dbelge]

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

[William]

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]

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

[William]

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

[dbelge]

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

[DzzD]

Is that normal?

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

[dbelge]

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

[William]

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]

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