Because the original 150W PSU is not strong enough I exchanged the original PSU with a meanwell RSP-320-12
( velleman.eu/products/view/?id=414920) I also bought this from Velleman. This is a 12V PSU with 320 Watts.
Should be plenty enough for powering the K8400 with a heatbed.
Everything seems to work, heat bed heats up nicely but i have noticed that my extruder needs alot more time to heat up then it did before.
I print PLA on 200 ° and during prints the temperature drops steadily towars 179 / 180 °. As if the extruder heater cannot keep up and doesnt get enough power to keep it at 200° .
Would anyone have an idea what i could check/change ?
It probably can’t keep up. The original cartridge is AFAIK 33W @ 15V. So @12V it’s running at only ~26W
If you can, try to insulate it, so it isn’t affected by the fan as much. 180°C might also be enough to print PLA, as it’s more anyway because of the way the thermistor is placed.
If that’s not enough, either get a 15V PSU or a 12V cartridge.
Damn I really wasnt aware of the original 15 Volts !
Maybe an easy way to fix it is to install both PSU’s? The original one for the Mainboard/extruder. The New one only for the heatbed. That should simply work right?
