So, I kept having Filament jams in some of the other feeders. But today I went to load some PETG. And used a different slot just for sale of it. Setup everything. It loads and then unloads multiple times. And finally it unwinds the roll and tangles up everything. I had to unplug it. Probably the spool was slipping on the rollers. I disassemble the AMS , pull all the ptfe out and check. They’re all clear. Plug back in, Well after that it would just RUN. the feeder lights all blink white like IDLE and empty. However the back of the AMS unit has a secondary motor going out the AMS. And this motor sounds busted or something it makes noise now. And just runs (loading ) forever and won’t stop and had to unplug the AMS as a result. I even just to check if somethibg was isolated and stuck in that section fed a filament in and it grabbed it and loaded that fine so No idea what’s going on other than the sensor in that part is maybe goofed. Put in a ticket, anyone have a clue what could be going on?
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I suspect you have a filament sensor that is stuck. There is one in each feeder, one for each slot in the hub underneath the AMS and the one in the buffer. The one in the feeder is apparently hard to see and can look OK but still say it sees filament that isn’t there.
I’m pretty sure there is another sensor in the extruder and but it sounds like the problem is in the AMS filament path.
I will probably check or disassemble to see if something is inside. Is there a sensor at the HUB MOTOR assembly?
TBH, I didn’t realize there was a motor at the hub! There are 4 sensors that I know of in the hub, one for each slot. This is the process for fixing it if they somehow get messed up. It looks fussy so I wouldn’t take it apart if springs and magnets feature in your nightmares. If you do take it apart, I find that working on a white towel can help contain parts that defy gravity. I swear I’ve seen a different procedure for magnetic sensors somewhere that looks different and easier but I can’t find it right now.
Found it. This is the other side of the hub from the above procedure, from here you can see and test the magnets for free movement without taking it apart.
If you have canned air or an air compressor, it may help to try blowing through the filament passages. If you’ve never used canned air, don’t shake it and only spray with the can upright. Frostbite is very painful.
Also, there are two items that seem to be referred to as a hub. The one inside the AMS and the one you need to install if you are using more than one AMS. I’m assuming you are working on the one inside the AMS.
Yep ok, that second Link looks doable. That’s exactly what I was referring to, thanks for that.