Loss Of Extrusion (Loe) - Stratasys FORTUS 360mc Service Manual

Loss of extrusion (LOE)

1.
Spaghetti head.
A spaghetti head results in an Air Model. The liquefier is damaged when at temperature
and not extruding. The liquefier must be replaced. A spaghetti head does not indicate a
filament delivery system problem (canister not jammed, canister motors are pushing
material, feed tubes and Y block are not blocked). A spaghetti head does not indicate a
low torque (weak) head motor. It takes a lot of force to buckle filament.
Model and support materials tend to fail in the same ways. Some
exceptions include: Only Model material is extruded on first layer
and base.
A.
B.
C.
D.
FORTUS 360mc/400mc Service Manual
Replace tip.
Liquefier tube not aligned with drive wheels:
a.
If tube bent, replace tip.
b.
If misaligned, see
If failure occurred on the first layer or base (model material only):
a.
Bad Z zero or platen out of level. Use measure flatness
diagnostic in the Maintenance menu.
b.
Overfill from .cmb file. Using supports extended for base uses
less material and is faster, but may cause overfill on base. To
remove risk of overfill, change to standard base. Select
Support Setup > Advanced Support Settings > Supports To
Create. Select Supports and base rather than Supports
extended for base.
To make the Supports and Base setting permanent, select Save
Custom Build Style in the Modeler menu. Then select Use Initial
Custom Build Style in the Preferences menu.
A tip may be plugged:
a.
Verify that the size of the tip matches with tip size indicated on
UI.
b.
Verify that tip life has not exceeded maximum tip odometer.
c.
Verify that the correct tips were installed for the material being
used.
d.
Verify that the tips were installed correctly.
e.
Check tip-to-tip calibration.
"Head Filament Alignment" on page 6-19.
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