Ultimaker 3 safety and compliance

General safety information

  • Ultimaker products shall only be used by persons that have carefully read and understood the user manual and the safety provisions in it.
  • Ultimaker 3D printers generate high temperatures and have hot moving parts that can cause injury. Never reach inside Ultimaker 3D printers while they are in operation. Always control the printers with the touchscreen at the front, the power switch at the back, or via Ultimaker Digital Factory.
  • Allow the Ultimaker 3D printers to cool down sufficiently before reaching inside, typically 5 minutes, unless explicitly stated otherwise for certain (maintenance) processes.
  • Do not change or adjust any parts of the product unless the change or adjustment is authorized by Ultimaker.
  • Do not store items inside Ultimaker products.
  • Ultimaker products are not intended for use by persons with reduced physical and/or mental capabilities, or persons with a lack of experience and knowledge, unless they are supervised or have been given instructions concerning the use of the appliance by a person responsible for their safety.
  • This product is not intended for use by children. When using this product, children should be under constant supervision of an adult responsible for their safety. Maintenance actions shall only be performed by an adult.


Electrical safety

The external power supply should not be tampered with. If due to a defect a replacement is needed, it should only be replaced by the original type.

A mains socket with protective earth/ground terminal must be used. Make sure that the building installation has dedicated means of over-current and short-circuit protection. Please use a circuit breaker with a current rating not exceeding 16A.

Note: Always unplug the product before performing maintenance or modifications, unless explicitly stated otherwise for certain (maintenance) processes.

Mechanical safety

The Ultimaker 3 and Ultimaker 3 Extended contain moving parts.

Pinching and entanglement hazard. Do not reach into the top area of the printer during operation due to a pinching hazard. Do not lean over the printer during operation due to a risk of entanglement of hair, jewelry, and/or scarfs. This may cause minor pain, but no significant injury to the user is expected from pinching or entanglement by the drive belts.

Crushing or pinching hazard. The force of the build plate is limited but may cause minor injury, so stay out of the reach of the build plate during operation.

Note: Always unplug the product before performing maintenance or modifications, unless explicitly stated otherwise for certain (maintenance) processes. Ensure print jobs cannot start unexpectedly via the Ultimaker Digital Factory when performing maintenance actions.

Risk of burns

Hot surface hazard. There is a potential risk of burns: the print heads of the Ultimaker 3D printers can reach temperatures above 200 °C, while the heated bed can reach temperatures above 100 °C. Do not touch either of these parts with your bare hands. Hot surface warning symbols are placed on the print head and on the glass build plate to warn the user about this risk.

Note: Always allow the product to cool down sufficiently before performing maintenance or modifications unless explicitly stated otherwise for certain (maintenance) processes. Ensure print jobs cannot start unexpectedly via the Ultimaker Digital Factory when performing maintenance actions.

Magnetic field

Static magnetic field hazard. Due to the static magnetic field caused by the magnets in the printer, keep a distance of at least 4 cm between any implanted electronic medical devices and implants containing ferromagnetic materials.

Emission hazard

During 3D printing, Ultrafine Particles (UFPs), Volatile Organic Compounds (VOCs), and other chemical substances may be emitted. Above certain concentrations (Threshold Limit Values, TLV), these emissions can pose a risk. Concentrations are influenced by the filament and adhesive used, print conditions (e.g. print temperature), room volume, Air Exchange Rate (AER), and the number of printers in a room.

Ultimaker products are designed for use with Ultimaker materials and are open for use with materials from third‐party suppliers. Third-party material manufacturers can supply print profiles that contribute to reliable results with Ultimaker hardware (The Ultimaker Material Alliance Program and Certified materials).

Safe use information for Ultimaker materials. Ultimaker materials can be printed safely without any filtering using the recommended temperatures and settings in a well‐ventilated area (minimum refresh rate or AER of 1.8 for a room size of 30.6 m3). When multiple Ultimaker 3D printers are operated in a contained environment, concentrations of UFPs and/or VOCs will increase. Depending on the specific situation, please consider other safety measures, such as an Air Manager to control UFPs, or a separate filter, cabinet, and/or dedicated ventilation system.

Safe use information for third‐party materials. Make sure to check with your material supplier whether additional risks and safety measures apply. Additional safety measures may include a filter for the safe usage of such materials. Please take the relevant information provided by the supplier of such filament/material into account at all times for safe operation. Please check the safety data sheet of each specific material for information. Ultimaker cannot be held responsible for any adverse effects from the use and/or performance of third‐party materials.

Personal protective equipment

The following items are recommended for working safely with the Ultimaker 3 or Ultimaker 3 Extended, especially for performing maintenance actions:

  • Tweezers. These are required for safely removing material residue from the tip of the nozzle.

  • Pliers. When cleaning the print cores with the hot and cold pull procedure, hold the filament with pliers to prevent damage to your hands in case the material breaks.

  • Protective gloves. It is recommended to protective gloves when removing the print from the glass build plate or when removing support structures.

Regulatory information

Electromagnetic compatibility (EMC)

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment can radiate unintentional radio frequency energy and, if not installed and used in accordance with the user manual, may cause interference to radio communications. Operation of this equipment in a residential area may cause interference in which case the user will be required to correct the interference at their own expense.

EC Declaration of Conformity

Ultimaker declares that the Ultimaker 3 fulfills the relevant provisions of the EU directives and applicable harmonized standards as listed in the EC Declaration of Conformity. You can find the EC Declaration of Conformity for the Ultimaker 3 and Ultimaker 3 Extended below, as well as older translated versions.


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