[Third party Material not feeding]

Hi

 

I have some ColorFabb_XT that we got because it was food safe.  It has a dia. of 2.85 and I am using a AA0.4 printhead.  The material does not feed.  Has anyone any clue as to what I might try?

 

I have read that the "Processing temp is 240 - 260 and manually set 240 it in Cura.  All I am getting is a very fine, un-continues  feed?

 

 

[What Happened]

I left the Printer running over night and returned to discover that the extrusion had simply gathered up around the Printing head (I would include a photo but can figure out how!)

 

two questions:

 

Anyone any idea what happened?

 

How can I safely remove the PLA without damaging anything