Flashforge AD5M Pro adding thermal switch for PSU fan

5 months ago
71

The fan in the power supply of the Flashforge Adventurer 5M Pro is always running. So I added a thermal switch to it so it only turns on when needed.
I used KFD-01F 45°C Thermal switch thermostat, with it the fan always stays on during printing and after printing it takes couple or several minutes for it to turn off, it varies with ambient temperature and how hot the machine got, once it turned off 2 minutes after printing and another time it took 8 minutes.
If you want to be extra safe you could use 40°C switch which will make the fan be on much more of the time.
Switching power supply in my 5M Pro: A-350FKD-24P-00

Note: the 5M and the 5M Pro have different power supplies.
This is the notable difference: the 5M's power supply has a switch you have to select to change between 120V and 240V input voltage.
While the 5M Pro's power supply supports both 120V and 240V automatically, there is no switch.
The 5M's power supply internals are different and it does not have the same heat sink as where I attached the thermal switch, you would have to find another location to attach it to.

I also show the modification I did to make the hot end nozzle cooling fan more quiet by removing the grille that was in front of it.

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