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• DO NOT ever under ANY circumstances use this laser engraver if the water cooling system is not working
properly. Always visually confirm that water is flowing through the entire system before turning on
the laser tube. Immediately stop use if the water cooling system malfunctions. If the system pauses
operation because the coolant has reached its maximum temperature of 122°F (50°C), allow at least
thirty minutes for the system to cool before resuming operation.
• DO NOT use generic coolant or antifreeze in your cooling water, as they may leave corrosive residues and
solidify inside your hoses and piping, causing malfunctions and even explosions. Use custom laser-safe
formulations or use and store your engraver in a climate-controlled area.
• DO NOT leave potentially combustible, flammable, explosive, or corrosive materials below the laser or
nearby where they might be exposed to the direct or reflected laser beam.
• DO NOT use or leave sensitive EMI equipment nearby. Ensure the area around the laser is free of strong
electromagnetic interference during any use.
• ONLY use this machine for working the materials described in the Material Safety section of this manual.
The laser settings and engraving process must be properly adjusted for specific materials.
• Ensure the area is kept free of other airborne pollutants, as these might pose a similar risk of reflection,
combustion, etc.
2.4 Electrical Safety Instructions
• ONLY use this device with a compatible, stable, and grounded power supply with less
than 5% fluctuation in its voltage. Do not use with an ungrounded 3 to 2 prong adapter.
The device’s grounding should be checked regularly for any damage to the line or loose
connections.
• DO NOT connect other devices to the same circuit, as the laser system may require its full amperage. Do
not use with standard extension cords or power strips. Use only surge protectors rated over 2000J.
• The work area around this laser engraving device should be kept dry, well ventilated, and environmentally
controlled to keep the ambient temperature between 40–104°F (5–40°C). For best results, keep the
temperature at 75°F (25°C) or below. The ambient humidity should be between 20–85%.
• Adjustment, maintenance, and repair of the electrical components of this device must be done ONLY
by trained and skilled professionals to avoid fires and other malfunctions, including potential radiation
exposure from damage to the laser components. Because specialized techniques are required for testing
the electrical components of this marking system, it is recommended such testing only be done by the
manufacturer, seller, or repair service.
• Unless otherwise specified, ONLY undertake adjustment, maintenance, and repair of this device when it
is turned off, disconnected from its power supply, and fully cooled.
2.5 Material Safety Instructions
• Users of this laser engraving machine are responsible for confirming that materials to be processed
can withstand the heat of the laser and will not produce any emissions or byproducts either harmful to
people nearby or in violation of local or national laws or regulations. In particular, do not use this device to
process polyvinyl chloride (PVC), teflon, or other halogen containing materials under any circumstances.
• Users of this laser engraver are responsible for ensuring that every person present during operation has
sufficient PPE to avoid the injury from the emissions and byproducts of the materials being processed. In
addition to the protective laser eyewear described above, this may require goggles, masks or respirators,
gloves, and other protective outer clothing.
• DO NOT operate the laser without its air assist.
• Users of this laser engraver are responsible for ensuring that otherwise safe dust and debris created
during use is fully cleaned afterwards. Dust allowed to build up on the surfaces of the main bay and the
tray under it is a fire hazard that can easily be ignited by the heat of the laser.
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