Hi,
I recently bought a UM S5 and am trying to accomplish my first print. I loaded the PVA as spool 2 and the tough PLA as spool 1. Loading the material works for both and I also get solid material pushed through the nozzle when loading. This all according the books. The problem though is that during printing the tough PLA (spool 1) doesn't load anymore. When I abort printing and pull back the filament I see that the filament is worn out by the traction wheel of feeder 1. Does anyone know what causes this?