Omtech SH-G570 User Manual page 13

• NEVER leave any part of the cabinet open during operation except (when needed) the
pass-through doors. Never interfere with the laser beam, do not place any part of your
body in any part of the laser path during operation, and never attempt to view the laser
directly. When using the pass-through doors or otherwise risking exposure to the laser
beam, take measures to protect yourself from potentially reflected laser beams including
the use of personal protective equipment such as protective eyewear specially designed to
filter the specific wavelength of your machine's laser with an optical density (OD) of 5+.
• DO NOT stare or allow others to stare continuously at the laser beam during operation
even when the cover is closed and/or wearing protective eyewear. Exercise caution with
the red dot positioning light as well, as its direct beam is a Class 4 laser in its own right.
• ONLY use this machine if its automatic shutoffs are working properly. When you first get
this machine and if you subsequently notice any problems, test them before undertaking
any other work. Do not continue use if the shutoffs do not occur. Turn off the machine and
contact customer service or your repair service. Never disable these shutoffs.
• DO NOT leave potentially combustible, flammable, explosive, or corrosive materials nearby
where they could be exposed to the direct or reflected laser beam.
• DO NOT ever under ANY circumstances use this laser engraver if the water cooling
system is not working properly. Always activate the water cooling system and visually
confirm that water is flowing through the entire system before turning on the laser tube.
If using the provided water pump, ensure that it is placed in a tank full of cool or tepid
distilled water. Do not use ice water or water that has become hotter than 100 ℉ (38 ℃ ).
For best results, keep it between 60 ℉ –70 ℉ (15 ℃ –21 ℃ ). Replace heated water or add
sealed bottles of frozen water to cool it, while never allowing the system to run without
water or allowing the water to become colder than 50 ℉ (10 ℃ ). Immediately stop use if
the water cooling system malfunctions.
• 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 machine in a
climate-controlled area.
• 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 the materials described in this manual. The laser settings and
cutting 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.
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