Replacing Print Jet 2

The material upgrade kit includes a replacement print jet for extruder 2 which has a larger diameter opening. For this upgrade, only print jet 2 should be replaced with the part included in the kit.

WARNING: ONCE PRINT JET 2 HAS BEEN UPGRADED, ABS, PLA AND NYLON SHOULD NEVER BE INSTALLED IN CARTRIDGE BAY 2. THIS BAY IS RESERVED FOR UPGRADED MATERIALS. WHEN PRINTING WITH WOOD MATERIAL, ANY ABS MATERIAL CURRENTLY INSTALLED MUST BE PROPERLY REMOVED.

Tools Needed

  • 2.5 mm Hex Head Driver
  • T10 Torx Driver

Replacing An Extruder Assembly Or Print Jet

WARNING: BEFORE SERVICING THESE COMPONENTS, GROUND YOURSELF TO THE SYSTEM BEFORE HANDLING ELECTRICAL COMPONENTS. ESD PROTECTION IS REQUIRED.

WARNING: NEVER PULL WIRES TO DISCONNECT THE CONNECTORS. THIS COULD DAMAGE THE WIRES AND THE CONNECTORS AND VOID THE MANUFACTURER’S WARRANTY.

The following procedure is intended to provide instructions about how to replace print jet 2 for the material upgrade kit.

  1. Navigate to the Print Plate Calibration screen and select LEVEL PLATE.

NOTE: The print pad will raise and the print jets will maneuver to the left rear of the printer.

  1. Select the upper right corner of the triangle on the touchscreen display.

NOTE: The printheads will move to the right rear corner of the print pad.

  1. Using the designated page from the Setup/Repack instructions, slide the paper between the print jets and the print pad.

NOTE: If there is a slight resistance, proceed to step 5.

NOTE: The red line (C) illustrates the gap between the print jets (A) and the print pad (B).

  1. If the paper slides easily between the print jets and print pad, rotate the adjustment knob counter-clockwise (from the bottom) until there is a slight resistance.

CAUTION: If the print pad is set too high, damage to the print pad or print jets may occur.

NOTE: If the paper can not be inserted between the print jets and the print pad, turn the adjustment knob clockwise (from the bottom) until there is a slight resistance on the paper.

  1. Select the lower middle triangle.
  2. Once the print jets have moved to the front center of the print pad, slide the paper between the print jets and the print pad.

NOTE: If there is a slight resistance, proceed to step 8.

  1. If there is no resistance on the paper when sliding it between the print jets and the print pad, rotate the adjustment knob counter-clockwise (from the bottom) until there is a slight resistance.

CAUTION: If the print pad is set too high, damage to the print pad or print jets may occur.

NOTE: If the paper can not be inserted between the print jets and the print pad, turn the adjustment knob clockwise (from the bottom) until there is a slight resistance on the paper.

  1. Select the upper left corner of the triangle.
  2. Once the print jets have moved to the left rear of the print pad, slide the paper between the print jets and the print pad.

NOTE: If there is a slight resistance, proceed to step 11.

  1. If there is no resistance on the paper when sliding it between the print jets and the print pad, rotate the adjustment knob counter-clockwise (from the bottom) until there is a slight resistance.

CAUTION: If the print pad is set too high, damage to the print pad or print jets may occur.

NOTE: If the paper can not be inserted between the print jets and the print pad, turn the adjustment knob clockwise (from the bottom) until there is a slight resistance on the paper.

  1. Once completed, select the checkmark to exit the utility.

  1. Properly remove the material cartridges.

NOTE: For more information, refer to the section titled Replacing a Material Cartridge in the user guide.

  1. Power off the printer and disconnect it from utility power.

CAUTION: The printer must be powered off and the power cord must be disconnected from utility power.

  1. Remove the lid from the top of the printer.
  2. Disconnect the cables X1 (A), X2 (A) and X3 (A) from extruder motors.

  1. Disconnect the 5-pin jumper cable from junction B-Out of the extruder 2 PCB.

  1. Disconnect cable X (B) from junction Ex of the extruder 2 PCB.

  1. Using a 2.5 mm hex head driver, loosen and remove the four 2.5 mm hex head bolts securing the delivery tube bracket and block to the extruders.

NOTE: For printers with 2 extruders, the 2 right side bolts and the center bolt will need to be removed. For printers with 3 extruders, the left bolt will also need to be removed.

NOTE: For clarity, the main extruder PCB was removed from the illustration. However, it does not need to be removed for this procedure.

  1. Move the delivery tube bracket/block aside so that extruder 2 can be removed.
  2. Using a 2.5 mm hex head driver, loosen the 2.5 mm hex head screw securing extruder 2 to the carriage plate.

NOTE: The screw will remain loose in the extruder housing.

NOTE: For clarity, the main extruder PCB was removed from the illustration. It does not need to be removed for this procedure.

  1. Carefully remove the affected extruder assembly from the carriage plate.

NOTE: Do not lose the screw that was loosened in the previous step.

CAUTION: Be careful not to damage the print jet cable connected to junction P-Jet of the extruder PCBs.

NOTE: For clarity, the main extruder PCB was removed from the illustration. However, it does not need to be removed for this procedure.

  1. Disconnect the print jet cable from junction P-Jet of the extruder 2 PCB.

  1. Using the T10 torx driver, loosen but DO NOT remove the T10 torx screw securing the print jet to the extruder assembly.

  1. Rotate the print jet and gently pull upward to remove it from the extruder.

NOTE: There is a tab on the print jet that aligns with a channel (A) in the extruder.

  1. Carefully remove the print jet from the extruder.

NOTE: There is a tab (A) on the end of the print jet that aligns with the channel (B) in the extruder.

  1. Insert the new print jet into the extruder.

  1. Rotate the print jet counter-clockwise so the cable from the print jet is facing the same direction as the extruder PCB.

  1. Vertically center print jet 2 in the pinch clamp of the extruder housing and tighten the T10 torx screw (A) enough that the print jet is securely held.

NOTE: For printers with 2 or 3 print jets, the height for print jets 1 and 3 will be adjusted to the height of print jet 2 after the extruder assembly has been reinstalled. Tighten the T10 torx screw enough that the print jet is securely held.

CAUTION: If tightened too tight, the threads in the extruder might begin to pull making it impossible to secure the print jet to the extruder. Exercise caution when tightening the torx screw.

NOTE: For illustration purposes, the board was removed from this image. It is unnecessary to remove the board while adjusting the height of the print jet.

  1. Connect the print jet cable to junction P-Jet on the extruder 2 PCB.

  1. Carefully insert extruder assembly 2 into the carriage plate.

CAUTION: Be careful not to damage the print jet cable connected to junction P-Jet of the extruder PCBs.

NOTE: If necessary, carefully adjust the cable alignment if the extruder assembly is difficult to install.

NOTE: For clarity, the main extruder PCB was removed from the illustration. It does not need to be removed for this procedure.

  1. Using a 2.5 mm hex head driver, tighten the 2.5 mm hex head screw securing the extruder 2 assembly to the carriage plate.

NOTE: For clarity, the main extruder PCB was removed from the illustration. It does not need to be removed for this procedure.

  1. Insert the original 2.5 mm hex head screws into the extruder block and secure it to the extruders using a 2.5 mm hex head driver.

NOTE: For clarity, the main extruder PCB was removed from the illustration. It does not need to be removed for this procedure.

  1. Connect cable X2 (B) to junction Ex of the extruder 2 PCB.

  1. Connect cable X2 (A) to the junction on the extruder 2 motor.

  1. Connect the 5-pin jumper cable to junction B-Out of the extruder 2 PCB.

  1. For printers with two (2) or three (3) print jets, loosen the T10 torx screws on extruders 1 and 3.

CAUTION: There should be enough access to reach the torx screws using an insulated torx driver. Exercise caution when working around the PCBs.

NOTE: Print jet 2 should not need further adjustment.

  1. Connect the printer to utility power, turn on the main power switch and then turn on the display.
  2. Navigate to the Print Plate Calibration screen and select MOVE JETS.

  1. Select the Z: down arrow until the display reads -0.50.

NOTE: Visually inspect the gap between the nozzle tip of print jet 2 and the print pad. If necessary, press the Z: down arrow until there is a gap.

  1. Press the X and Y adjustment arrows until print jet 2 is closely aligned above the front print pad adjustment knob.

NOTE: The red line in the illustration demonstrates an approximate alignment of print jet 2 and the front print pad adjustment knob.

  1. Press the Z: up arrow until the nozzle of print jet 2 lightly touches the print pad.

NOTE: If there is still a gap between the nozzle of print jet 2 and the print pad, and the Z: up arrow will not raise the print pad further, rotate the front print pad adjustment knob counter-clockwise (from the bottom side) until the nozzle lightly touches the print pad.

  1. Verify that the nozzles of print jet 1 and print jet 3 are also touching the printpad.
  2. When all of the print jet nozzles lightly touch the print pad, power off the printer and disconnect it from utility power.
  3. Tighten the left and right print jet T10 torx screws using a T10 torx driver.

  1. Connect the printer to utility power and power on the printer.
  2. Ensure the print pad is at its lowest position.
  3. Power off the printer and disconnect it from utility power.
  4. Holding on to the extruder carriage assembly, gently position it over the jet wiper assembly.

  1. Verify the wiper blade meets the tapered portion (A) of the print jet nozzle. If it does, the jet wiper is properly adjusted. Proceed to step 51.

NOTE: If the wiper tip is too high, proceed to the next step. If the wiper tip is too low, proceed to step 50.

  1. If the wiper blade is too high, remove the jet wiper assembly and turn the adjustment thumbscrew (A) clockwise. Reinstall the jet wiper and return to step 48.

  1. If the wiper tip is too low, remove the jet wiper assembly and turn the adjustment thumbscrew (A) counter-clockwise. Reinstall the jet wiper and return to step 48.

  1. Once satisfied with the adjustment, connect your printer to utility power and power on the printer.
  2. If necessary, repeat steps 1 - 11 to calibrate the print pad.
  3. Proceed to the Z-Gap and Level Gap procedure in section 5 of this guide. Once the Z-Gap and Level Gap are correct, refer to section 6 of this guide and calibrate the offset jets.