--- title: How to change the air duct of the Smart Cabinet description: Changing the air duct is a simple task that requires a certain order and organisation. --- [Skip to content](https://support.bcn3d.com/knowledge/change-air-duct-smart-cabinet#main-content) - [English](https://support.bcn3d.com/knowledge/change-air-duct-smart-cabinet) - [Español](https://support.bcn3d.com/es/knowledge/change-air-duct-smart-cabinet) English Show submenu for translations [Contact support](https://support.bcn3d.com/knowledge/kb-tickets/new?hsLang=en) [Customer portal](https://support.bcn3d.com/repair-service?hsLang=en) ![knowledge-base-header-bcn3d-logo.png\]](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Header/knowledge-base-header-bcn3d-logo.png?height=40&name=knowledge-base-header-bcn3d-logo.png) - [Default HubSpot Blog](https://blog.bcn3d.com/) Open main navigation Close main navigation - [Default HubSpot Blog](https://blog.bcn3d.com/) - - [English](https://support.bcn3d.com/knowledge/change-air-duct-smart-cabinet) - [Español](https://support.bcn3d.com/es/knowledge/change-air-duct-smart-cabinet) English Show submenu for translations - [Contact support](https://support.bcn3d.com/knowledge/kb-tickets/new) - [Customer portal](https://support.bcn3d.com/repair-service) - [BCN3D forum](https://www.bcn3d.com/community/) [BCN3D forum](https://www.bcn3d.com/community/) Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge base - BCN3D](https://support.bcn3d.com/knowledge?hsLang=en) 2. [Smart Cabinet](https://support.bcn3d.com/knowledge/smart-cabinet?hsLang=en) 3. [Maintenance](https://support.bcn3d.com/knowledge/smart-cabinet?hsLang=en#maintenance) # How to change the air duct of the Smart Cabinet ## Changing the air duct is a simple task that requires a certain order and organisation.   --- | | [**EN**](https://support.bcn3d.com/knowledge/change-air-duct-smart-cabinet) | **[ES](https://support.bcn3d.com/es/knowledge/change-air-duct-smart-cabinet?hsLang=en)** | | --- | --- | --- | ---   **![warning-2](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Contact%20form/warning-2.png?width=20&name=warning-2.png) This is an advanced repair article.** This guide is designed to be performed with the authorization and assistance of the BCN3D support team or authorized distributors. **Without the necessary knowledge, you could cause damage to the Smart Cabinet during repair and invalidate the warranty.** If you have any questions or problems please contact the support team: **[contact form](https://support.bcn3d.com/es/knowledge/kb-tickets/new?hsLang=en)**.   | **Tools** | | | --- | --- | | ![phillips-screwdriver-01](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/phillips-screwdriver-01.png?width=75&name=phillips-screwdriver-01.png) | > **Screwdriver 8mm** | | ![allen-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/allen-icon.png?width=21&name=allen-icon.png) | > **5mm Allen key** | | ![allen-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/allen-icon.png?width=19&name=allen-icon.png) | > **2.5mm Allen key** | | ![allen-2-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/allen-2-icon.png?width=16&name=allen-2-icon.png) | > **2mm Allen key** | ---   | ![bcn3d-electrical-hazard-02](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Safety%20guide/bcn3d-electrical-hazard-02.png?width=70&name=bcn3d-electrical-hazard-02.png) | **Attention!** **Electrical Hazard** **It's very important to** **turn off and disconnect the Smart Cabinet** to avoid short circuits or any risk of electrocution. | | --- | --- | | ![bcn3d-hand-injury-1-03](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Safety%20guide/bcn3d-hand-injury-1-03.png?width=70&name=bcn3d-hand-injury-1-03.png) | **Attention! Rollover danger** Do not apply any type of force to the Smart Cabinet during the repair. **Place the cabinet in a flat and open area**, and **lock the brackets** of all wheels. | ### Follow the next steps to change the air duct: #### **1.** Turn the printer off and unplug the Smart Cabinet. | ![bcn3d-epsilon-turn-off-1](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/General/bcn3d-epsilon-turn-off-1.png?width=387&name=bcn3d-epsilon-turn-off-1.png) | ![disconnect\_sc](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Draft/disconnect_sc.png?width=336&name=disconnect_sc.png) | | --- | --- | #### **2.** Lock the wheels using the brakes. ![freno Cropped](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Draft/freno%20Cropped.png?width=688&name=freno%20Cropped.png) #### **3.** Open the drawer and lift the lip. ***![open-frontal-panel-smart-cabinet-bcn3d](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/air-duct/open-frontal-panel-smart-cabinet-bcn3d.jpg?width=688&name=open-frontal-panel-smart-cabinet-bcn3d.jpg)*** | #### **4.** Unscrew the nuts from the air duct cover. | ![nut-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/nut-icon.png?width=36&name=nut-icon.png) **x2 M5** | | --- | --- | ![SC\_Tapa\_ducto2.1](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Smart%20Cabinet/SC_Tapa_ducto2.1.png?width=688&name=SC_Tapa_ducto2.1.png) | #### **5.** Loosen the screws from the air duct cover. | ![screw-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/screw-icon.png?width=18&name=screw-icon.png) **x2 M5 10mm** **![washer-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/washer-icon.png?width=30&name=washer-icon.png)x2 M5** | | --- | --- | ![SC\_Tapa\_ducto2.0](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Smart%20Cabinet/SC_Tapa_ducto2.0.png?width=688&name=SC_Tapa_ducto2.0.png) **Note**: to remove the cover of the air duct could be necessary to pull back the bottom foam cover just a bit, approx 2mm. | #### **6.** Unscrew the UPS cover | ![screw-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/screw-icon.png?width=18&name=screw-icon.png)**x6  M4 10mm** | | --- | --- | ![unscrew-cover](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Draft/unscrew-cover.jpg?width=688&name=unscrew-cover.jpg) #### **7.** Turn the UPS off, it is located in the lower area of the Smart Cabinet. Turn it off by pressing the right button until you stop hearing a 'beep' sound. ![press-enter-button-2](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Draft/press-enter-button-2.jpg?width=688&name=press-enter-button-2.jpg) | #### **8.** Unscrew the bottom cover. | ![screw-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/screw-icon.png?width=18&name=screw-icon.png)**x7  M4 10mm** | | --- | --- | **![bottom-cover-sc-smart-cabinet](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/air-duct/bottom-cover-sc-smart-cabinet.png?width=688&name=bottom-cover-sc-smart-cabinet.png)** #### **9.** Disconnect the following cables from the mainboard: **HEATER\_0, FAN, SERVO\_0, and SERVO\_1.** ![disconnect-mainboard-smart-cabinet](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/air-duct/disconnect-mainboard-smart-cabinet.png?width=688&name=disconnect-mainboard-smart-cabinet.png) #### **10.** Disconnect the resistance cable of the air duct. ![disconnect-air-duct-smart-cabinet](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/air-duct/disconnect-air-duct-smart-cabinet.png?width=688&name=disconnect-air-duct-smart-cabinet.png) | #### **11.** Unscrew the air duct. | ![screw-icon](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/screw-icon.png?width=18&name=screw-icon.png)**x4 M3,5 9,5mm** | | --- | --- | ![remove-air-duct-screws-smart-cabinet](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Smart%20Cabinet/A%C3%B1adir%20un%20poco%20de%20texto.png?width=688&name=A%C3%B1adir%20un%20poco%20de%20texto.png) #### **12.** Change the air duct for a new one. ![air-duct-smart-cabinet](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/air-duct/P1077398%20Cropped.jpg?width=688&name=P1077398%20Cropped.jpg) #### 13. Reconnect the cables of the air duct in the following way **Note**: the cable of the Air duct's fan would be connected to the Heater\_1 pin of the mainboard. ![connection-air-duct-v3](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/air-duct/connection-air-duct-v3.png?width=688&name=connection-air-duct-v3.png) ![disconnect-air-duct-smart-cabinet](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/air-duct/disconnect-air-duct-smart-cabinet.png?width=688&name=disconnect-air-duct-smart-cabinet.png) #### **14.** Follow the same steps in the opposite order to reassemble the Smart Cabinet. #### 15. keep the door closed for at least 2 hours to stabilize humidity.   #### [Forum Community](https://support.bcn3d.com/knowledge/bcn3d-forum-community?hsLang=en) This article doesn't fix your issue? Check out our [**forum community**](https://support.bcn3d.com/knowledge/bcn3d-forum-community?hsLang=en) for more info about this   It's important to keep your printer in good shape to make the most out of it. In this chart you can find a list of the extruder maintenance procedures and how frequently these should be done. [Maintenance Plan](https://support.bcn3d.com/knowledge/maintenance-guide-bcn3d-epsilon-series?hsLang=en)   ![bcn3d-recycle](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Tools/bcn3d-recycle.png?width=27&name=bcn3d-recycle.png)  Take your e-waste to a certified recycler. [Check how we do it in BCN3D.](https://support.bcn3d.com/knowledge/environment-bcn3d?hsLang=en)   | --- #### RELATED ARTICLES | | --- | | [![update firmware epsilon eng](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Related%20Articles%20English/update%20firmware%20epsilon%20eng.png?width=336&name=update%20firmware%20epsilon%20eng.png)](https://support.bcn3d.com/en/knowledge/update-firmware-bcn3d?hsLang=en) | [![maintenance](https://support.bcn3d.com/hs-fs/hubfs/Knowledge%20base/Related%20Articles%20French/maintenance%20FR.png?width=336&name=maintenance%20FR.png)](https://support.bcn3d.com/knowledge/maintenance-guide-bcn3d-epsilon-series?hsLang=en) | | --- | --- |   | **You can help improve the BCN3D Knowledge Base.** If you feel there are guides that we are missing or you found any error, please use this form to report it. **[Report form](https://share.hsforms.com/1F7t1sBuOQyWlAeRwwFSjgQ3fec5)** :) | | --- | - [Omega](https://support.bcn3d.com/knowledge/omega?hsLang=en#main-content) - [Manuals & Downloads](https://support.bcn3d.com/knowledge/omega?hsLang=en#manuals-downloads) - [First steps](https://support.bcn3d.com/knowledge/omega?hsLang=en#first-steps) - [Maintenance](https://support.bcn3d.com/knowledge/omega?hsLang=en#maintenance) - [Tips](https://support.bcn3d.com/knowledge/omega?hsLang=en#tips) - [Troubleshooting](https://support.bcn3d.com/knowledge/omega?hsLang=en#troubleshooting) - [Epsilon Series](https://support.bcn3d.com/knowledge/epsilon-series?hsLang=en#main-content) - [Manuals & Downloads](https://support.bcn3d.com/knowledge/epsilon-series?hsLang=en#manuals-downloads) - [First steps](https://support.bcn3d.com/knowledge/epsilon-series?hsLang=en#first-steps) - [Maintenance](https://support.bcn3d.com/knowledge/epsilon-series?hsLang=en#maintenance) - [Tips](https://support.bcn3d.com/knowledge/epsilon-series?hsLang=en#tips) - [Troubleshooting](https://support.bcn3d.com/knowledge/epsilon-series?hsLang=en#troubleshooting) - [Sigma Series](https://support.bcn3d.com/knowledge/sigma-series?hsLang=en#main-content) - [Manuals & downloads](https://support.bcn3d.com/knowledge/sigma-series?hsLang=en#manuals-downloads) - [First steps](https://support.bcn3d.com/knowledge/sigma-series?hsLang=en#first-steps) - [Maintenance](https://support.bcn3d.com/knowledge/sigma-series?hsLang=en#maintenance) - [Tips](https://support.bcn3d.com/knowledge/sigma-series?hsLang=en#tips) - [Troubleshooting](https://support.bcn3d.com/knowledge/sigma-series?hsLang=en#troubleshooting) - [Smart Cabinet](https://support.bcn3d.com/knowledge/smart-cabinet?hsLang=en#main-content) - [Manuals & Downloads](https://support.bcn3d.com/knowledge/smart-cabinet?hsLang=en#manuals-downloads) - [First steps](https://support.bcn3d.com/knowledge/smart-cabinet?hsLang=en#first-steps) - [Maintenance](https://support.bcn3d.com/knowledge/smart-cabinet?hsLang=en#maintenance) - [Troubleshooting](https://support.bcn3d.com/knowledge/smart-cabinet?hsLang=en#troubleshooting) - [Filaments](https://support.bcn3d.com/knowledge/filaments?hsLang=en#main-content) - [Tips](https://support.bcn3d.com/knowledge/filaments?hsLang=en#tips) - [PLA](https://support.bcn3d.com/knowledge/filaments?hsLang=en#pla) - [Tough PLA](https://support.bcn3d.com/knowledge/filaments?hsLang=en#tough-pla) - [TPU](https://support.bcn3d.com/knowledge/filaments?hsLang=en#tpu) - [PET-G](https://support.bcn3d.com/knowledge/filaments?hsLang=en#pet-g) - [BVOH](https://support.bcn3d.com/knowledge/filaments?hsLang=en#bvoh) - [PVA](https://support.bcn3d.com/knowledge/filaments?hsLang=en#pva) - [ABS](https://support.bcn3d.com/knowledge/filaments?hsLang=en#abs) - [PP](https://support.bcn3d.com/knowledge/filaments?hsLang=en#pp) - [PA](https://support.bcn3d.com/knowledge/filaments?hsLang=en#pa) - [PAHT CF15](https://support.bcn3d.com/knowledge/filaments?hsLang=en#paht-cf15) - [PP GF30](https://support.bcn3d.com/knowledge/filaments?hsLang=en#pp-gf30) - [PET CF15](https://support.bcn3d.com/knowledge/filaments?hsLang=en#pet-cf15) - [Metal Pack](https://support.bcn3d.com/knowledge/filaments?hsLang=en#metal-pack) - [BCN3D Stratos](https://support.bcn3d.com/knowledge/bcn3d-stratos?hsLang=en) - [BCN3D Cloud](https://support.bcn3d.com/knowledge/bcn3d-cloud?hsLang=en#main-content) - [BCN3D Cloud Teams](https://support.bcn3d.com/knowledge/bcn3d-cloud?hsLang=en#bcn3d-cloud-teams) - [Sigma + Sigmax](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en#main-content) - [Manuals & Downloads](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en#manuals-downloads) - [First steps](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en#first-steps) - [Maintenance](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en#maintenance) - [Tips](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en#tips) - [Troubleshooting](https://support.bcn3d.com/knowledge/sigma-sigmax?hsLang=en#troubleshooting) - [Tips](https://support.bcn3d.com/knowledge/tips?hsLang=en#main-content) - [Design 3D](https://support.bcn3d.com/knowledge/tips?hsLang=en#design-3d) - [3D printer](https://support.bcn3d.com/knowledge/tips?hsLang=en#3d-printer) - [Previous models](https://support.bcn3d.com/knowledge/previous-models?hsLang=en#main-content) - [Manuals & downloads](https://support.bcn3d.com/knowledge/previous-models?hsLang=en#manuals-downloads) - [Maintenance](https://support.bcn3d.com/knowledge/previous-models?hsLang=en#maintenance) - [Default HubSpot Blog](https://blog.bcn3d.com/) [![Chill listening crop-3](https://support.bcn3d.com/hs-fs/hubfs/Logo_200px_horizontal_negro.png?width=100&height=40&name=Logo_200px_horizontal_negro.png "Chill listening crop-3")](https://support.bcn3d.com/knowledge?hsLang=en) Knowledge base Copyright © 2026, BCN3D Headquarters