How to Clean the Purge Duct on the Bambu Lab A1
If your Bambu Lab A1 shows the code HMS_0300-800B-0001-0009, its sensor has detected that the purged filament is accumulating in the waste tube. Failing to act can cause the machine to not purge properly and for residues to reach the printing area. The solution involves direct manual intervention. 🛠️
Prepare the Printer for Action
Before manipulating any component, prioritize safety. Turn off the equipment and unplug the power cord from the electrical outlet. Identify the purge duct, which is normally a transparent tube connecting the print head to the waste box. Examine its path to locate the exact point where the filament is clogged.
Initial Safety Steps:- Completely disconnect the printer from the power source.
- Locate the transparent tube running from the hotend to the waste container.
- Visually inspect to find the material buildup.
Excessive purging efficiency can turn the tube into an unwanted art gallery. A reminder that automatic recycling still needs a human helper.
Remove the Obstruction Carefully
The core process is to free the tube. Gently disassemble the obstructed section. To extract the filament pieces, you can use fine-tipped pliers. If the plastic is very adhered, applying mild heat with a hairdryer (maintaining a safe distance) helps to soften it and facilitates extraction. Verify that no residue remains before reassembling everything.
Cleaning Process:- Disassemble the affected part of the tube.
- Use precision tools, such as pliers, to remove the filament.
- Apply controlled heat if the material doesn't yield, to soften it without damaging the tube.
- Check that the duct is completely clear before reassembly.
Conclusion and Maintenance
Resolving the error HMS_0300-800B-0001-0009 requires manually removing the accumulated filament from the purge duct. This maintenance prevents major issues and ensures your Bambu Lab A1 can continue purging correctly without risk of contaminating the print. Performing this check periodically can prevent future alerts. ✅