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                  1. Support
                  2. Printer features
                  3. Safety and safety timer messages (CORE One, CORE One L, XL, MK4/S, MK3.9/S, MK3.5/S)
                   

                  Contents

                  • Door closing (CORE One, CORE One L)
                  • Heater timeout
                  • Heatbreak thermistor (CORE One, CORE One L, XL, MK4/S, MK3.9/S)
                  • Potential print detach following a power outage

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                  JOSEF PRUSA®, PRUSA RESEARCH®, PRUSA POLYMERS®, PRUSA ORANGE®, PRUSA 3D ® AND PRUSAMENT® are registered trademarks of Prusa Development a.s. used by Prusa Research a.s. under licence from Prusa Development a.s.

                  Safety and safety timer messages

                  (CORE One, CORE One L, XL, MK4/S, MK3.9/S, MK3.5/S)

                  Relevant for

                  MK4 family
                  XL family
                  MK3.9 family
                  MK3.5 family
                  CORE One family
                  +
                  Article is also available in following languages
                  English
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                  Safety is a crucial aspect of operating a machine, and we take it seriously. Our Prusa CORE One, CORE One L, and our Original Prusa XL, MK4/S, MK3.9/S, and MK3.5/S have dedicated safety and safety timer messages in particular situations. 

                  Door closing (CORE One, CORE One L)

                  The Prusa CORE One is equipped with a door. For safety reasons, mainly to avoid burns and injuries due to the moving parts, it is crucial to have the door closed during any printer movement or printing. Closing the door is also advantageous to prevent air drafts and improve the print quality. 

                  Heater timeout

                  For safety reasons, our printers automatically disable any heating in any case where the printer is idle for more than 30 minutes while heated. 

                  Heatbreak thermistor (CORE One, CORE One L, XL, MK4/S, MK3.9/S)

                  Our Nextruder printers are equipped with a heatbreak thermistor, in addition to a nozzle thermistor. In case the printer detects a disconnection of the heatbreak thermistor, a warning message is shown. 

                  Potential print detach following a power outage

                  The printers mentioned in this article are equipped with a power panic feature, allowing a print to be able to resume after a power outage or interruption. 

                  However, adhesion to the print sheet is guaranteed by heatbed temperature. A power outage interrupts heatbed heating for a certain amount of time, potentially causing the print to be detached or become easily detached from the print sheet. 

                  Before resuming a print after this scenario, inspect the print visibly to ensure it still adheres to the print sheet. 

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                  Topics

                  • About your printer
                    • Printer features
                      • Power Panic
                      • Power-modes
                      • Satin steel sheet
                      • Textured steel sheet
                      • Smooth Steel Sheet
                      • Special PA Nylon steel sheet
                      • Nextruder filament sensor (CORE One, CORE One L, MK4/S, MK3.9/S, XL/+)
                      • Sample G-codes
                      • Buddy firmware-specific G-code commands
                      • Nextruder silicone sock (CORE One/+, CORE One L/+, XL/+, MK4/S, MK3.9/S)
                      • Cancel Object (MK4/S, MK3.9/S, XL/+, CORE One+/GEN 2, MINI/+)
                      • Touch screen (CORE One L, CORE One, MK4/S, MK3.9/S, MK3.5/S, XL/+)
                      • Accelerometer (CORE One, MK4/S, MK3.9/S)
                      • GPIO Module
                      • Network Connection (CORE One L, CORE One, MK4S, MK3.9S)
                      • Flashing custom firmware (CORE One L, CORE One, MK4/S, MK3.9/S, MK3.5/S)
                      • PP steel sheet
                      • Safety and safety timer messages (CORE One, CORE One L, XL, MK4/S, MK3.9/S, MK3.5/S)
                      • Advanced filtration system for Prusa CORE One
                      • Offline Workflow with Prusa 3D Printers
                      • Prusa CORE One to CORE One+ upgrade (community version)
                      • Saving Log File (CORE One, CORE One L, XL, MK4/S, MK3.9/S, MK3.5/S, MINI)
                    • Printer description
                    • General Information