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Model G0923 (Mfd. Since 05/20)
To clean nozzle using a cold pull:
1. Unload filament (refer to Changing Filament
on
Page 29).
2. Remove Bowden tube from print head by
pressing down on tube coupler and pulling
firmly on the Bowden tube (see
Figure 48).
Performing a Cold Pull
The "cold pull" is a method of cleaning the interior
of the nozzle. Molten filament is allowed to par-
tially cool within the nozzle and is then removed.
Carbonized printing residue adheres to the fila-
ment as it is pulled out.
Tools Needed
Qty
Filament 1.75mm ............................... As Needed
Note: These instructions assume PLA filament is
used in this process. Although PLA can get the
job done and is easy to acquire, it is brittle and
breaks easily when pulled out of the print head.
For a more reliable pull, consider using white or
clear Nylon filament. If filament other than PLA is
used, adjust preheating temperatures accordingly.
Figure 48. Removing Bowden tube.
Figure 49. Cold pull filament ends.
— If removed end has carbonization and
residue on it, repeat
Steps 3–6.
— If removed end is clean, cold pull process
is complete.
3. Preheat nozzle (refer to Preheating Nozzle
on
Page 26).
4. Manually push filament into print head until it
extrudes from nozzle.
5. Reduce nozzle temperature to 80–90° C.
Refer to
Changing Preheat Temperature on
Page 26.
6. Gently pull filament out of print head and
inspect end (see
Figure 49).
First Pull
Second
Pull
Summary of Contents for G0923
Page 56: ......
