Read the Dremel 3D20 manual and these instructions before replacing the hot-end assembly in your Dremel 3D20. Failure to comply with the warnings and instructions may result in fire, equipment damage, property damage, or personal injury. Always unplug Dremel 3D20 from its power before per- forming any service procedures. Failure to do so may result in personal injury and equipment damage. Use only Dremel approved materials and components. Use of object materials, or 3D objects other than Dremel approved object materials and genuine Dremel components may void warranty. Repairs on the Dremel 3D20 may require the use of special tools (pulling devices and bearing press). Authorized repair centers have trained repair technicians and equipment nec- essary to perform these repairs. For the location of the repair center near you, please call 1-844-4DRML3D (1-844-437-6533) Monday thru Friday, 8AM to 6PM CST. Or, look on our web site at www.Dremel3D.com and follow the link for ‘Support’. 3D20 Hot-end Assembly Replacement WARNING ! PROCEDURE CONTINENTAL UNITED STATES CANADA Dremel Service Center 4915 21st Street Racine, WI 53406 Phone: 1-844-4DRML3D Giles Tool Agency 47 Granger Ave, Scarborough, ON M1K 3K9, Canada Phone:1-416-287-3000 West Coast Tool 4008 Myrtle Street Burnaby, B.C. V5C 4G2 Phone: 1-604-873-5394 This service document will outline the steps to replace the hot-end assembly within the extruder, for the 3D20. This guide should only be used if a replacement part has been sent to you by Dremel customer service. The replacement of the hot-end assembly may be needed if a clog occurs that cannot be fixed with the unclog tool. Tools Required: The following list of equipment should be available prior to the rework. • 2.5mm Hex wrench (Allen key) • Scissors Step 1: Bring the printer to a safe state for service 1. Cut any filament running into the extruder. 2. Run the load command from the filament screen. Allow filament to run into the extruder for at least 5 seconds after the end of the filament enters the extruder intake. 3. Exit the filament loading screen, and allow the printer to reach a state where the icon reads “cool” on the screen. 4. Turn off and unplug the printer.
Transcript
Read the Dremel 3D20 manual and these instructions before replacing the hot-end
assembly in your Dremel 3D20. Failure to comply with thewarnings and instructions may result in fire, equipmentdamage, property damage, or personal injury. Always unplug Dremel 3D20 from its power before per-forming any service procedures. Failure to do so may result in personal injury and equipment damage.Use only Dremel approved materials and components.Use of object materials, or 3D objects other than Dremel approved object materials and genuine Dremel componentsmay void warranty.Repairs on the Dremel 3D20 may require the use of specialtools (pulling devices and bearing press). Authorized repaircenters have trained repair technicians and equipment nec-essary to perform these repairs.
For the location of the repair center near you, please call 1-844-4DRML3D (1-844-437-6533) Monday thru Friday, 8AMto 6PM CST. Or, look on our web site at www.Dremel3D.comand follow the link for ‘Support’.
3D20 Hot-end Assembly Replacement
WARNING!
PROCEDURE
CONTINENTAL UNITED STATES CANADA
Dremel Service Center 4915 21st StreetRacine, WI 53406 Phone: 1-844-4DRML3D
This service document will outline the steps to replace thehot-end assembly within the extruder, for the 3D20. Thisguide should only be used if a replacement part has beensent to you by Dremel customer service. The replacementof the hot-end assembly may be needed if a clog occurs thatcannot be fixed with the unclog tool.
Tools Required:The following list of equipment should be available prior tothe rework.
• 2.5mm Hex wrench (Allen key)• Scissors
Step 1: Bring the printer to a safe state forservice1. Cut any filament running into the extruder.
2. Run the load command from the filament screen. Allow filament to run into the extruder for at least 5 seconds afterthe end of the filament enters the extruder intake.
3. Exit the filament loading screen, and allow the printer toreach a state where the icon reads “cool” on the screen.
4. Turn off and unplug the printer.
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Step 2: Disconnect all electrical wires fromthe extruder1. Disconnect all four wires from the extruder, as pictured. Always be sure to pull the connectors by the plastic, andnever by the wires. Pulling by the wires can damage theconnectors.
Step 3: Remove the front fan and extrudermotor1. Unscrew the two screws in front of the extruder fan usingthe 2.5mm hex wrench.
2. Remove the front fan and heat sink, ensuring that the partsattached to the screws do not fall. These parts can be removed from the extruder as an assembly.
3. Remove the motor from the back of the extruder.
Step 4: Remove the turbo fan from the side ofthe extruder1. Remove the screw on the bottom left corner of the extruder, as shown below. Removing this screw also removes the fan baffle from the extruder.
2. Remove the back left screw from the extruder.
3. Pull the turbo fan away from the mounting carriage.
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Step 5: Unscrew the hot-end assembly fromthe mounting carriage1. Remove the left and right hand screws from the bottom ofthe extruder mounting carriage.
2. Remove the hot-end assembly from the mounting bracket.
Step 6: Replace the hot-end assembly1. Place the new hot-end assembly on the mounting bracket.
2. Using the 2.5mm hex wrench, insert and tighten the 2mounting screws into the bottom of the bracket (shown inStep 5: 1) to attach the new hot-end assembly.
Step 7: Replace the extruder on the mountingbracket1. Taking the heat sink and fan assembly, place the frontmounting screws through the aluminum block. Place theextruder motor on the back of the extruder and screw inthe two screws.
2. Reconnect the four wires to the extruder, as shown. Besure to properly manage the wires next to the extruder. • The blue and orange wires connect to the two clearwires on the extruder.
• The black and red wires connect to the black and redwires on the extruder.
• The red and blue wires connect to the white and redwires on the extruder.
• The long connector attaches to the motor on the extruder.
Congratulations! You are now ready to build. Build On.
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3. Replace the back left screw, through the bottom of theturbo fan mount, into the bottom of the extruder mountingcarriage.
4. Insert the 2.5mm hex screw onto the fan baffle and guidethe fan baffle into place on the extruder. Tighten the screwto mount the fan baffle on the extruder.
5. You have now successfully installed the new hot-end assembly.
