¶ Hotend Heating Assembly
The H2D printer is equipped with 2 hotend heating assemblies, one for the left and one for the right. These assemblies are not interchangeable. If one is damaged, you must replace it with the corresponding hotend heating assembly. Below are the details of the left and right hotend heating assemblies and their accessories:
Left hotend heating assembly:
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Left hotend heating assembly (pre-installed with a cable sheet) * 1
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Wind blocker* 1
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M1.6x4 screw (used to secure the cable sheet and wind blocker) * 2
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M2.5x7 screw (used to secure the left hotend heating assembly) * 4
Right hotend heating assembly:
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Right hotend heating assembly * 1
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Insulating sheet * 1
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M3x10 screw* 3
Left hotend heating assembly
Right hotend heating assembly
¶ When to Use
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Hotend heating function is abnormal
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Buckle cannot secure the hotend
¶ Tools and materials needed
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New hotend heating assembly (left/right, replace with the corresponding component based on the actual situation)
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H2.0 Allen key
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H1.5 Allen key
¶ Safety Warning
IMPORTANT!
It's crucial to power off the printer before conducting any maintenance work, including work on the printer's electronics and tool head wires. Performing tasks with the printer on can result in a short circuit, leading to electronic damage and safety hazards.
During maintenance or troubleshooting, you may need to disassemble parts, including the hotend. This exposes wires and electrical components that could short circuit if they contact each other, other metal, or electronic components while the printer is still on. This can result in damage to the printer's electronics and additional issues.
Therefore, it's crucial to turn off the printer and disconnect it from the power source before conducting any maintenance. This prevents short circuits or damage to the printer's electronics, ensuring safe and effective maintenance. For any concerns or questions about following this guide, we recommend submitting a technical ticket regarding your issue and we will do our best to respond promptly and provide the assistance you need.
¶ Replace the Left Hotend Heating Assembly
¶ Remove the Left Hotend Heating Assembly
¶ Step 1. Remove toolhead front cover and left hotend
Switch to the left hotend, then turn off the printer and disconnect the power cable.Remove the toolhead front cover and the left hotend.
¶ Step 2. Remove the part cooling fan and air duct
Refer to this Wiki for instructions on how to remove the part cooling fan and air duct:
¶ Step 3. Remove the left hotend heating assembly
Use the H2.0 Allen key to remove the 4 hotend fixing screws (M2.5x7, marked by squares), then use the H1.5 Allen key to remove the 2 cable sheet/wind blocker fixing screws (M1.6x4, marked by ellipses). Remove the left hotend heating assembly connector from the cable clip and peel off the foam, and disconnect the left hotend heating assembly from the TH board.
¶ Install the Left Hotend Heating Assembly
¶ Step 1. Install the left hotend heating assembly
First, align the new left hotend heating assembly and the cable sheet with the screw holes on the toolhead, and use an H2.0 Allen key to tighten the 4 left hotend heating assembly fixing screws (M2.5x7, marked with squares); then place the cable sheet, and use an H1.5 Allen key to tighten the 2 fixing screws (M1.6x4, marked with eliipses).
Buckle the cables of the left hotend heating assembly into the slots one by one, then connect the plug to the TH board and re-attach the foam.
¶ Step 2. Install the part cooling fan and air duct
Refer to this Wiki for instructions on how to install the part cooling fan and air duct:
¶ Step 3. Install the toolhead front cover and left hotend
Reinstall the left hotend and toolhead front cover in order.
¶ Replace the Right Hotend Heating Assembly
¶ Remove the Right Hotend Heating Assembly
¶ Step 1. Remove toolhead front cover and right hotend
Remove the toolhead front cover and the right hotend in order.
¶ Step 2. Remove the part cooling fan and air duct
Refer to this Wiki for instructions on how to remove the part cooling fan and air duct:
¶ Step 3. Remove the right hotend heating assembly
Use the H2.0 Allen key to remove the 3 right hotend heating assembly fixing screws; Then remove the right hotend heating assembly cables from 2 clips (Clip 1: Toolhead camera bracket; Clip 2: Cooling fan for hotend).
Clip 1: Toolhead camera bracket
Clip 2: Cooling fan for hotend
Disconnect the right hotend heating assembly from the TH board and remove the insulating sheet.
¶ Install the Right Hotend Heating Assembly
¶ Step 1. Install the right hotend heating assembly
- Install the new insulating sheet into the toolhead, then install the new right hotend heating assembly into the toolhead and use the H2.0 Allen key to tighten the 3 fixing screws (M3x10).
- Secure the right hotend heating assembly cables into the 2 clips (Clip 1: Toolhead camera bracket; Clip 2: Cooling fan for hotend). Then, connect the plug to the TH board.
Clip 1: Toolhead camera bracket
Clip 2: Cooling fan for hotend
¶ Step 2. Install the part cooling fan and air duct
Refer to this Wiki for instructions on how to install the part cooling fan and air duct:
¶ Step 3. Install the toolhead front cover and right hotend
Reinstall the right hotend and toolhead front cover in order.
¶ Verify the Functionality
Connect the power and turn on the printer.
Set the hotend temperature to 220℃ on the screen and check if the hotend can heat up successfully.
¶ End Notes
We hope the detailed guide provided has been helpful and informative.
If this guide does not solve your problem, please submit a technical ticket, we will answer your questions and provide assistance.
If you have any suggestions or feedback on this Wiki, please leave a message in the comment area. Thank you for your support and attention!