Lasers are categorized into several different classes depending on the extent of the potential hazard associated with the laser, with Class 1 being the least dangerous and Class 4 the most dangerous. The United States Food and Drug Administration has indicated that Class 4 lasers may pose an “immediate skin hazard and eye hazard from exposure to either the direct or reflected beam; may also present a fire hazard.”

The Class 4 laser machine includes two Class 4 working lasers and a Class 3B indicator laser. Diffused laser beams may leak out from the openings when the protective enclosure is lifted during operation, and you may be exposed to Class 4 laser radiation. The Class 4 laser machine is intended for professional use only, and more precautions are required for safe operation.

■ ONLY professionally trained personnel are allowed to use the product. A qualified Laser Safety Officer (LSO) must be designated and the product shall be operated by or under the guidance of the LSO. The LSO is obliged to evaluate the laser safety risks and set up safety control mechanisms to ensure the safety of operators and prevent untrained persons from entering the laser radiation hazard area. Based on the safety evaluation and safety control mechanisms of the LSO, you can set up a safety-controlled area by using the remote interlock function of the access-control key. You can visit support.xtool.com/article/1367 to find the operation guide.
■ Before using the product, complete xTool's Laser Safety Awareness Training Course and review LSO Training documents, available at xTool Creative Space (XCS) and support.xtool.com/article/1171 for more information on Class 4 lasers, their uses, and their potential hazards. In the workplace context, you shall also receive adequate Class 4 laser product safe operation training as set forth in ANSI Z136.1, which is on the responsibility of the employer to provide.

■ Do not operate the product when any part of it is removed. Removing any part may expose the laser system and cause damage to the product.
■ When you use this product, wear safety goggles that can shield your eyes from 455 nm, 655 nm, and 1064 nm laser beams and do not put your hands into the processing area. Avoid eye or skin exposure to direct or scattered laser radiation. You can visit support.xtool.com/article/1443 to find information about how to choose safety goggles.
■ If the protective enclosure can fully cover the material to be processed, pull down the protective enclosure and turn on the "Stops when enclosure opened" function in XCS to enable the safety interlock switch before operation. With the safety interlock switch turned on, if the protective enclosure is opened during normal operation, the laser will stop working.
■ If your skin gets burned by laser beams, disinfect the skin with a povidone-iodine solution immediately and apply burn ointment to the wound. If you are severely burned, go to a hospital and see a doctor as soon as possible.
■ Do not use the product in public places, or on other occasions where untrained persons or children are present.
■ Ensure that only trained professionals with personal protective equipment enter the laser radiation area. You can visit support.xtool.com/article/1444 to learn about the Maximum Permissible Exposure (MPE) and Nominal Ocular Hazard Distance (NOHD) of Class 4 xTool laser machines.
■ You are advised to use xTool materials for engraving or cutting. You can visit  mt.xtool.com and choose your device to find xTool materials applicable to it. If the material you use is not an xTool material, or if you are not sure whether the material is applicable to your device, please contact our customer service at support@xtool.com for help to ensure safe operation and processing results.

 

2. Chemical safety

A high-density laser beam is used by the device to irradiate the material to be cut or engraved, so as to heat up the material surface and vaporize the material without burning. But some materials may release toxic and harmful smoke or gases at a high temperature. Therefore, precautions are required for chemical safety during material processing.

Follow the safety precautions:

■ Do not engrave or cut any material that contains PVC or vinyl (processing plastics is not recommended). These materials (and other materials containing chlorine/chloride) can generate corrosive vapor that is extremely harmful to the human body and can cause damage to the product. Any damage caused by engraving or cutting any material containing PVC or vinyl is not covered by the Company's warranty.
■ Do not engrave or cut any unknown materials. Vaporization or melting of many materials, which include but are not limited to PVC and polycarbonate, may release harmful smoke. 
■ You are advised to use the product with xTool Purifier. If you use a purifier, check and maintain the filters regularly to ensure proper operation of the purifier. If the kit you've purchased does not include a purifier, you can purchase a purifier separately.

 

3. Fire safety

A high-density laser beam is used by the device to irradiate the material to be cut or engraved, so as to heat up the material surface and vaporize the material without burning. But most materials are inherently flammable and may be ignited to form an open flame that can burn down the device (even if it is made of flame-retardant materials) and its surroundings. Experience shows that vector cutting with a laser is most likely to produce an open flame.

Read the following warnings and suggestions carefully:

■ Ensure that the area around the product is clean and neat and that the workspace is well-ventilated so that the generated smoke can be discharged in time.
■ Do not place any flammable materials, explosives, or volatile solvents, such as paper, acetone, alcohol, or gasoline, around the product. They may cause the spread of flames and increase the risk of material ignition. 
■ Do not leave the product unattended when it is working. If the product works with setting errors and is left unattended for a long period of time, or if a mechanical or electrical fault occurs, a fire may be caused.
■ Clean the product regularly. Excessive accumulation of residues and chippings from cutting and engraving would increase the risk of fire. The internal working area needs to be cleaned periodically to ensure that there is no residue or chipping inside the product.
■ Keep a fire extinguisher and perform regular maintenance and inspection of it.
■ When the laser machine cuts or engraves flammable materials at low speed and high power, the materials are prone to be ignited to form an open flame. If an open flame occurs, please stop processing in time.
■ Place and use the product in locations where children are not likely to be present.
■ You are advised to use the product with xTool Fire Safety Set. If you use a fire safety set, strictly follow the installation guide to install it. You can visit support.xtool.com/product/17 to find details about how to connect the fire safety set to an xTool product. If the kit you've purchased does not include a fire safety set, you can purchase a fire safety set separately.

 

4. Electrical safety

Read the following warnings and suggestions carefully:

■ Do not open any access panel on the product when the product is connected to the power supply. Accidental contact with the power supply may cause injury.
■ Do not touch any electronic area with your hands or other tools when the product is connected to a power supply.

 

5. Use and maintenance

Follow the operating principles:

■ Check the product for damage every time before you use it. Do not operate it in any way when any damage or defect is found.
■ Place and use the product on a stable, flat, and non-flammable surface. Keep the workspace clean and neat. 
■ Do not disassemble the product or change its structure in any way without authorization. Do not modify or decompile its operating system.
■ Do not leave the product unattended during operation. When the product is working, pay attention to whether it is working properly and the information displayed on the touchscreen controller.
■ Keep the inside of the product clean. Residues and chippings accumulated during cutting and engraving are dangerous and may cause a fire. Clean the chippings and residues inside the work area regularly.
■ The machine works properly at the temperature of 0°C to +35°C and can be stored properly at the temperature of –10°C to +60°C. Do not operate it at a temperature lower than 0°C.
■ Cut off the power before maintaining the product.
■ This product is not user-serviceable. It must be returned to the factory or repaired by authorized professionals.
■ Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

 

6. Warning and instructions signs

On xTool F1 Ultra, the warning and instruction signs are labeled where physical injuries or damage to the machine may be caused before and/or during operation. If a sign is damaged or lost, replace it immediately. You can use the following template to print the sign you need.

Laser specifications

	Wavelength	Beam divergence	Maximum power output
Working laser	1064 nm ± 5 nm	1.5 mrad (IEC 60825-1 Default (simplified) evaluation C6=1)	20 W
	455 nm ± 5 nm	1.5 mrad (IEC 60825-1 Default (simplified) evaluation C6=1)	20 W
Indicator laser	650 nm ± 5 nm	1.5 mrad (IEC 60825-1 Default (simplified) evaluation C6=1)	0.8 mW

Understand the buzzer

Buzzer	Machine state
Buzzing once	Working or connection status changed, which includes: · Connected to or disconnected from the XCS software · Switched between STA and AP modes · Network configuration in AP mode succeeded (connected to a Wi-Fi network) ·Connected to or disconnected from the fire safety set · Access-control key inserted or removed · Ready for processing · Processing ended · Processing paused due to machine movement
Keeping buzzing	Flames detected

Note: You can turn off the buzzer reminders through XCS. If this function is turned off, the buzzer will not sound when the device state changes or an exception occurs.