The following are environmental issues concerning the NextDent 5100 Printer:

• Controlling waste heat is not required for normal operation of the NextDent 5100 Printer.
• When you dispose of print materials, refer to the SDS for that material and follow any applicable local, state, and federal regulations.
• All waste products (spilled print material, cleaning solvents, etc.) must be disposed of in accordance with all applicable local, state, and federal regulations.
• Do not clean anything with uncured resin on it in a sink or tub that drains into normal wastewater.

There are three safety switches on the printer, located on: the lid, the front door, and the catch tray. Tripping or defeating any of these switches will abort the current print job and freeze the elevator. The next time you send a job to the printer, the elevator will move back to the home position before printing. Please see the section Abort a Print Job for more information.

NOTE: For complete safety information and instructions for use, please read the SDS and Instructions for Use for the NextDent resin you are using. These documents are packaged in with each bottle of print material.

HARMFUL IRRITANT WARNING: Always wear chemical-resistant gloves (such as nitrile gloves), goggles, and protective clothing when handling print material. Avoid skin contact. Avoid breathing in print material fumes.

• Always practice standard dental-lab hygiene and follow Personal Protective Equipment (PPE) requirements outlined in this manual.
• Always wear chemical-resistant gloves, such as nitrile, when working near print materials or with partially cured parts. It is recommended to wear approved goggles and protective clothing. Protective clothing includes, but is not limited to: closed-toed shoes, full-length pants, and splash-resistant lab coats or equivalents. 3D Systems recommends using 100% nitrile gloves; however, other chemical-resistant gloves will suffice. Do NOT use latex gloves, as they do not provide complete chemical protection.
• Wearing contact lenses when working with print materials is not recommended.
• Avoid breathing in vapors from print material. To avoid breathing in vapors: when opening the build chamber, allow a few seconds to pass before putting your face near the opening. No special facility and/or ventilation modifications should be required to operate the printer in a lab environment.
• Always wash skin thoroughly with a nonabrasive soap and COLD water after working with print materials. DO NOT USE HOT WATER OR SOLVENTS to wash hands, as these will stimulate your pores and result in absorption through the skin. Print material is sensitizing and can cause bad allergic reactions if absorbed through the skin. A person who becomes sensitized to print material should not work around that material in the future.
• If a small amount of resin gets on your clothing, remove the article of clothing as soon as possible (it might be a good idea to have a change of clothes on hand just in case). Have contaminated clothing dry cleaned. DO NOT wash in regular washing machine that drains into wastewater. If a particularly large amount of resin gets on your clothes, it is best to discard them according to all local, state, and federal regulations. Keep contaminated clothing away from food and drinks. Wash hands thoroughly after handling contaminated clothes, even if you wore protective clothing/gloves to handle them.
• Use extreme care when handling >90% alcohol solvent, which is used to remove excess print material from uncured parts. >90% alcohol solvent is very flammable.
• Keep all print materials away from heat, sparks, static discharge, and flame. Print material containers may rupture when exposed to extreme heat. We recommend storing your NextDent materials in a fire-resistant storage cabinet. Please refer to the SDS for a particular resin to view its flash point.
• High temperatures may cause a spontaneous polymerizing reaction, generating heat and pressure. Closed containers may rupture or explode during a runaway polymerization. Use a water spray or fog to reduce or direct vapors.
• Fire fighters should use a self-contained breathing apparatus and full protective clothing in the event of a resin fire.
• Do not leave uncured, or liquid, resins in an area where persons who are not knowledgeable about their handling or use may have access to them.
• Keep away from food and drinks.

WARNING: Use National Fire Protection Association Class B extinguishers such as carbon dioxide, dry chemical, or foam. A spray of water might also be effective. Do not use a direct jet of water or smothering to extinguish burning resin or solvents.

Print Material Characteristics

The photopolymers used in the print materials may be hazardous if handled improperly. Repeated skin contact with print materials may cause sensitization. Consult the manufacturer’s Safety Data Sheet (SDS) for information on specific print materials. For further information on this and related topics, consult the 3D Systems Materials website.

WARNING: Never mix different print materials. doing so will render both materials ineffective.

NextDent Material Storage

Print materials should be stored in the opaque, non-reactive containers in which they were provided, according to the guidelines given in the SDS included with the print material, and according to all applicable regulations (local, state, and federal). Protect print material from sunlight, ambient light, and moisture. Close the resin bottle after each use. Be sure your resin-storage area is dry, dark, and between 5°C-30°C (41°F-86°F). It is preferable to store the resin in a fireproof cabinet. Improperly stored resins may increase in viscosity, and may eventually result in a gelled, polymerized product in the storage container. Materials should be stored in conformance with applicable laws and regulations. The expiration date of the product is mentioned on the product label. If resin is past its expiration date, the product is no longer guaranteed in terms of treatment. 3D Systems is not responsible for losses incurred as the result of improper storage of print material.

Print Material Disposal

Do not dump print material down any drains. Dispose of print material according to the guidelines given in the SDS included with the print material and according to all applicable regulations (local, state, and federal). For more information on print-material disposal, please see the section Considerations for Material in the Chapter: Facility Requirements.

Print-Material Spill Containment

A major print-material spill is unlikely during normal use of the NextDent 5100 Printer. However, there may be certain situations that require containment of a major resin spill. Your company has the responsibility to define what constitutes a major spill. Clean up spilled print material as quickly as possible, as material will cure under both natural and artificial lighting. Personnel who are involved in cleaning up major spills of print material should wear NIOSH/MSHA approved respirators designed for use with organic chemical vapors. In addition, each person should wear protective goggles, rubber boots, and 100% nitrile gloves to minimize exposure to print material, which can cause eye, skin, and respiratory irritation, as well as possible skin allergies and respiratory reactions.

WARNING: Untrained personnel should be evacuated from the area.

WARNING: Print materials are flammable. Care should be taken during print material containment and cleanup operations.

A supply of dikes and control booms should be stocked so they are available to contain the affected area in the event of a major print-material spill. The spilled print material should then be absorbed on inert, absorbent material and placed into drums for transfer to an approved waste-disposal site. After absorbing all spilled material, clean the spill location with a nonabrasive cloth and >90% alcohol solvent. After cleaning up the spill, individuals should wash thoroughly with soap and COLD water. Any clothing touched by resin should be dry cleaned before reuse. If resin has gotten onto your skin or clothes, avoid exposure to sunlight or other UV-light sources until skin and clothing have been cleaned of print material. Repeated or prolonged skin contact may cause sensitization. Vapor may be harmful.

Eliminate sources of ignition. Prevent entry into drains. Absorb spilled resin onto sand, earth or any other suitable adsorbent material. DO NOT absorb onto sawdust or other combustible materials. Resin spills or uncontrolled discharges into wastewater systems must be reported to the appropriate regulatory body. Do not discard resin into drains/surface waters/groundwater. Maximize ventilation after accidental release.

Shelf Life

Print materials are certified for use for 24 months from their date of manufacture. The expiration dates are marked on the material bottle labels. Resins should not be used past their expiration date. The printer will not accept the scan of a resin bottle that is expired.

In-Service Life

In-service life of the print material is defined as the useful life of the material after having been poured into the NextDent 5100's resin tray. The in-service life of print material greatly varies depending on material type, usage and environmental conditions. If the material is exposed to temperatures outside of the normal operating limits, is exposed to UV light, is exposed to particulates or vapors in the air such as dust or fumes, or if contaminates are introduced such as partially cured platforms being placed back into the resin tray, this will shorten the material's in-service life. The types of patterns and builds performed also affect the in-service life of the material. With all this taken into consideration, the in-service life of the material is the same as its expiration date: two years. The material retains its usefulness until a buildup of viscosity or a change in reactivity prevents further processing in the NextDent 5100 Printer. All materials require some level of stirring or spinning to retain their properties. You must NOT mix resin from an old resin bottle with resin from a new resin bottle. These resins will be from different batches; and mixing them could render both ineffective. Follow the Instructions for Use of the specific material you are using for complete instructions on getting the most use out of it.

Contamination

Care should be taken when cleaning windows, panels, and other parts of the NextDent 5100 Printer. Cleaning products that contain ammonia should not be used because they can contaminate the material. Instead, use a small amount of >90% alcohol solvent on a paper towel to clean up spills. Accidental contamination of resins may change the material’s performance characteristics to such an extent that acceptable parts can no longer be reliably created.

Polymerization

Polymerization may occur upon heating the resin bottle. Signs of polymerization of stored resin include container bulging, leaking, the emission of heat, or an unusual odor from the container. If you notice any of these traits, do not use the material and dispose of it according to all local, state, and federal regulations.

WARNING: Sealed container may rupture if explosively hot. Please see the resin's sds for information on its flash point.

Do not remove any panels or other parts of the printer casing. The printer was designed to minimize operator exposure to electrical hazards during normal operations. All exposed electrical circuits are contained within limited-access cabinets. This is to separate the operator from service and maintenance areas. 100-240VAC power is present in multiple locations throughout the unit. Whenever performing maintenance procedures, power down the machine and unplug AC power if possible.

The following paragraphs provide general first-aid procedures and recommendations for protective equipment to minimize the risks from print material exposure. If professional medical attention is necessary, take the Safety Data Sheet (SDS) for the exact print material involved to the attending physician.

Skin Contact

NextDent resin may cause sensitization by skin contact. It is irritating to the skin; repeated and/or prolonged contact may cause dermatitis. Wear 100% nitrile gloves and lab coats to avoid skin contact. Should print material come in contact with skin, wash thoroughly with soap and COLD water and immediately remove contaminated clothing and shoes. If skin is irritated, get medical attention. Dry-clean contaminated clothing. Discard contaminated shoes and leather products.

Eye Contact

High vapor concentration may cause irritation. Safety goggles should be worn to prevent accidental splashes of print material into the eyes. If print material comes in contact with the eye, flush immediately with large amounts of COLD water for 15 minutes. Avoid sunlight, fluorescent light, and other ultraviolet light, and obtain immediate medical attention. Eye-wash facilities and a first-aid kit should be readily available and close to the print material.

Contact Lenses

If print material splashes into the eye when contact lenses are worn, flush the eye with water immediately. Verify that flushing has removed the contact lens from the eye. Protect eyes from light and obtain immediate medical attention. Discard contact lenses that come into contact with liquid print material.

Fume Inhalation

Inhaling fumes from NextDent resin is irritating to the respiratory system. High atmospheric concentrations may lead to irritation of the respiratory tract, dizziness, headache and anesthetic effects. Do not operate the NextDent 5100 Printer without its carbon filter in place. Normal operation of the printer with filter in place should not emit fumes. However, if a person should inhale printer fumes, bring the exposed person to fresh air. Perform CPR if required. If breathing is difficult, give oxygen and obtain immediate medical attention for the person.

Ingestion

Do not induce vomiting. Never induce vomiting or give anything by mouth if the victim is unconscious or having convulsions. Immediately rinse mouth and drink plenty of water. Get medical attention.

CAUTION: Use of controls or adjustments, or performance of procedures other than those contained in any official manual for this machine, may result in hazardous radiation exposure.

NOTE: Closed light-projection products are not considered to be hazardous.

The NextDent 5100 printer incorporates a protective housing and radiation-protective lid, such that there is no exposure or human access to the radiation generated by the light projector during normal operation. The print engine was evaluated to IEC 62471 and classified as Risk Group 2. This means the UV light is only a moderate risk and does not pose a hazard due to aversion response to bright light or thermal discomfort. However, it is still good practice not to stare directly into the projector, particularly when running the machine with an empty resin tray.

All service to the light-projection process machine, the embedded light-projection system, and other components requiring sensor override shall only be performed by 3D Systems Corporation service personnel, their authorized agents, or personnel who have been service trained by 3D Systems Corporation.

Product Labels

The numbers in Item column below correspond to the numbers in the images that follow.

Item	Description	Qty	Label
1	Product Label - Contains system information and certification symbols	1
2	Optical-Radiation Warning Sticker Risk Group 2 - Possible hazardous optical radiation emitted from the product. Do not stare at operating lamp. May be harmful to the eyes.	1