3D Systems CubePro User manual

UNJAMMING A CUBEPRO EXTRUDER

 Tools required:

o 2.5 mm Hex screwdriver

o T10 Torx driver

o Pliers

o Side cutters

 First, switch the power off. Turn machine 180 degrees, so the back panel faces you.

 Remove the top lid, then disconnect the sensor loom from the sensor PCB

 Disconnect sensor loom from breakout board

 Disconnect jet from sensor PCB

 Disconnect extruder loom from sensor PCB

 Use 2.5mm Hex screwdriver provided in the toolbox to remove sensor PCB. Undo 2 M3x5 screws

shown.

 Remove sensor PCB from extruder drive body being careful not to damage the filament sensor (if

equipped)

 Carefully pull the feeding tube from tube block to access the filament

 Carefully pull the filament from extruder in one smooth move without applying excessive

Force

 The section of filament will look like that shown in the picture below:

 Cut the filament above the section removed from extruder

 Using flat pliers provided with the toolbox, remove the idler wheel assembly from extruder

drive assembly. Pull very carefully pinching on the end of idler wheel, being careful not to

touch or damage the sensor disk or sensor sticker.

 Loosen both bolts holding the breakout board using the 2.5 mm Hex driver

 Using T10 driver provided with the toolbox, loosen the clamp holding the jet. Do not remove the

screw.

 Remove the jet from the extruder drive. There is a notch on the nozzle that needs to meet up with

the slot in the extruder. Spin the nozzle while pulling slightly until you feel it meet the opening. You

will feel some resistance; this is normal, as you will need to break the filament buckled in the

extruder. After removing, the jet will look like shown below:

 Using side cutters provided with the toolbox, cut the filament protruding from cooling tube of the

jet. Aim to cut it as deep inside the cooling tube as possible, as it will help to purge the filament

through the jet later on.

 Remove buckled filament from within the extruder drive using flat end pliers. Make sure there is no

filament left inside. Manually turn the drive wheel to make sure there is no filament left wound on

the wheel.

 Replace the idler wheel assembly, being careful not to damage the sensor disk or sensor sticker.

 Before replacing sensor PCB, if your sensor board is equipped with a filament sensor make sure the

filament sensor is properly installed and aligned in the connectors. Make sure the filament sensor

installed in the recess inside the block and PCB is flush with the standoffs. If it is not the case, make

sure that everything is aligned properly. Use flat end pliers to hold the screws while fixing the PCB

to extruder drive.

Note: Not all sensor boards will have a filament sensor (circled above). Machines shipped from 3D Systems

after February 2016 do not require a filament sensor

 Check jet’s loom and position of thermocouple as shown:

 Install the jet back into the extruder drive. Level the jets and check the check Z gap as shown starting

on page 62 of the user guide. Disconnect head loom from the breakout board to avoid damaging the

components while levelling the jets. There will be a warning message on the screen. This can be

ignored for now. Replace the head loom connector when finished and reinstall the breakout board

using the two 2.5 mm Hex screws.

 Connect all looms back to sensor PCB and breakout board according to their markings.

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