Omtech SH-G1390 User Manual page 13

• 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. 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 engraver 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 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.
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