Raise3D Pro 2 Filament Sensor Replacement Guide

Raise3D Pro 2 Filament Sensor Replacement Guide

Are you facing issues with the filament sensor on your Raise3D Pro 2 3D printer? Understanding how to troubleshoot and replace the filament sensor is crucial for ensuring smooth printing operations. In this guide, we will walk you through the step-by-step process of replacing the filament sensor on your Raise3D Pro 2, providing you with the necessary knowledge to maintain your printer’s functionality and efficiency.

Replacing Filament Run-out Sensor on Raise3D Pro 2

If you need to replace the filament sensor on your Raise3D Pro 2, follow these steps:

  1. Verify Temperature Settings:

    • In the Utilities tab, ensure that the temperature is correctly set for your filament material (e.g., 215°C for Raise3D PLA).
    • Adjust the temperature if necessary.
    • Press the Unload button to begin the process.
  2. Unloading Filament:

    • Once the printer reaches the designated temperature, the Unload button becomes available.
    • Press Unload to withdraw the filament.
    • Unplug the following cables:
      • Filament run-out sensor power cable
      • Nozzle lifting controller board connection cable
      • Switching motor connection cable (Note: Some of these wires may have stiff connections but will come out with steady pressure.)
  3. Replace the Filament Run-out Sensor:

    • Remove the fixing screw using a 2.5mm hex wrench.
    • Take out the old filament run-out sensor.
    • Install the new filament run-out sensor in its place.
    • Tighten the fixing screw.
    • Reconnect the three cables, paying attention to the direction of the switching motor cable.

For detailed visual instructions, you can refer to the Filament Run-out Sensor Assembly Replacement Guide provided by Raise3D.

Benefits of 3D Printer Filament Sensor

A 3D printer filament sensor is a clever addition to your 3D printing setup. Let me explain how it works:

  1. Detection Mechanism:

    • Filament sensors come in different types, but they all serve the same purpose: to detect whether there’s enough filament left on the spool.
    • One common type uses a limit switch. When the filament runs out, it physically triggers the switch, signaling that it’s time to reload.
    • Another type relies on optical rotary encoders. These sensors sense the velocity of the filament as it moves within the system.
  2. Integration with the Printer:

    • The filament sensor is typically placed along the filament path, close to the extruder.
    • From the sensor, the filament runs directly to the extruder mounted on the moving print head (assuming you have a direct extruder).
    • To avoid “false alarms,” a PTFE tube is often used. Without it, the filament might get pulled along as the print head moves around the frame.
  3. Communication with the Printer:

    • When the sensor detects low filament or a complete runout, it communicates this information back to the printer’s internal processor.
    • The printer can then pause the print job, alert the user, or take other predefined actions.

For more details, you can explore articles like the one on OctoPrint Filament Sensors or learn about the importance of filament runout sensors

A 3D rendering of an Omron pushbutton switch.

IMG Source: wordpress.com

Troubleshooting Filament Sensor Issues on Raise3D Pro 2

Troubleshooting filament sensor issues on the Raise3D Pro 2 can be a bit tricky, but fear not! Let’s tackle this step by step:

  1. Filament Stuck in Pro2:

    • If your Pro2 stopped feeding filament and continued to print air, it’s likely due to a blockage. Here’s what you can do:
      • Dismantle the extruder: You’ll need to disassemble the extruder to clear the blockage. The filament might be squished at the feed roller, preventing it from moving in or out.
      • Locate the blockage: Check between the filament sensor and the extruder gears. There’s a tunnel between them, and sometimes the filament gets stuck there.
      • Heat the filament: Gently heat the filament to soften it. Be cautious and cover other parts to avoid damage.
      • Push and pull: Once softened, gently push the filament forward and then pull it out.
  2. Filament Sensor Paused Print:

    • If your filament sensor caused a pause during printing, follow these steps:
      • Unload all filament.
      • Power off the machine.
      • Remove the 2.5mm hex screw on the left-hand side of the sensor.
      • Loosen and re-tighten the two 2mm hex screws on the front of the sensor.

Correctly and incorrectly inserted JST connectors.

IMG Source: prusa3d.com

Step-by-Step Filament Run-Out Sensor Assembly Replacement Guide

Here’s a step-by-step guide for replacing the filament run-out sensor assembly in your Raise3D Pro 2 printer:

  1. Unload Filament:

    • Enter the “Utilities” tab on your printer’s interface.
    • Press the “Unload” button to unload the filament from the nozzle on the side of the filament run-out sensor that you want to replace (for this guide, we’ll use the left side as an example).
    • Wait for the temperature to reach the target (recommended unloading temperature for Raise3D Premium PLA filament is 215°C).
    • The printer will automatically start unloading the filament.
    • Remove the filament from the left guide tube.
    • Depress and hold the top ring on the quick connector, then pull out the guide tube from the side of the filament run-out sensor to be replaced.
  2. Prepare for Replacement:

    • Turn off the printer using the rocker switch located at the rear of the machine.
    • Open the filament-side door of the printer.
    • Locate the filament run-out sensor assembly positioned above where the filament spools would be mounted.
  3. Disconnect the Cable:

    • Carefully unplug the connecting cable from the side of the filament run-out sensor assembly. In this example, we’re using the left extruder, so the connecting cable will be plugged into the left side of the filament run-out sensor.
  4. Remove the Sensor Assembly:

    • Remove the securing screw that holds the filament run-out sensor assembly in place.
    • With the screw removed, gently push the filament run-out sensor assembly upwards to remove it from the printer.
  5. Install the New Sensor Assembly:

    • Prepare the new filament run-out sensor assembly.
    • Position the replacement sensor assembly into the vacant slot.
    • Secure it in place by reinstalling the securing screw using a 2mm hex wrench.
    • Reconnect the connecting cable to the filament run-out sensor assembly.
  6. Verify Installation:

    • Turn on the printer.
    • Check if the red LED of the filament run-out sensor assembly is illuminated (indicating that the sensor is not detecting filament passing through).
    • Insert filament into the left loading hole to verify if the indicator light extinguishes when the filament passes through the newly installed filament run-out sensor assembly.

For more detailed instructions, you can also visit the official Raise3D support page.

The first image shows a user inserting a white tube into a black fitting, the second image shows a user inserting a different end of the same white tube into a different black fitting, and the third image shows the completed Bowden tube installation.

IMG Source: raise3d.com

Filament Sensor Test Procedure

Let’s dive into the filament sensor test procedure and some troubleshooting steps for the Raise3D Pro 2 printer.

Filament Sensor Test Procedure:

  1. Verify Filament Temperature:
    • Go to the “Utilities” tab on your Raise3D Pro 2 printer.
    • Ensure that the temperature is correctly set for your filament type. For Raise3D PLA, the recommended temperature is 215°C.
    • If necessary, adjust the temperature.
  2. Unload Filament:
    • Select the “Unload” button to unload the filament.
  3. Sensor Realignment:
    • Power off the machine.
    • Remove the 2.5mm hex screw on the left-hand side of the filament sensor.
    • Loosen and then re-tighten the two 2mm hex screws on the front of the sensor.

Troubleshooting Tips:

  • Sensor Light Not Turning On:
    • If the red light on the left extruder does not turn on, it might indicate a sensor issue.
    • Verify that the filament is correctly loaded and that there are no obstructions.
    • Consider realigning the sensor using the steps mentioned above.
  • Overly Sensitive Sensor:
    • Some users have reported issues with overly sensitive sensors.
    • Sometimes just moving the filament Bowden tube can trigger the sensor.
    • If necessary, you can disable the filament sensor, but be cautious and monitor filament usage manually.

The image shows the filament sensor and power cable connection to the printer, and the switching motor and nozzle lifting controller board connection cable.

IMG Source: cloudfront.net

In conclusion, the Raise3D Pro 2 Filament Sensor Replacement process is a critical aspect of maintaining your 3D printer’s performance. By following the detailed instructions outlined in this guide, you can effectively troubleshoot filament sensor issues and carry out a successful sensor replacement. Whether you need to unload filament, realign the sensor, or install a new sensor assembly, the steps provided are designed to help you navigate the process with confidence.

Remember to refer to the official Raise3D support resources for additional assistance and visual guidance. With proper care and attention to detail, you can ensure that your Raise3D Pro 2 remains in top working condition for all your 3D printing needs.


    Leave a Reply

    Your email address will not be published. Required fields are marked *