Omtech SH-H1309 User Manual page 15

2.3 Laser Safety Instructions
When used as instructed, this machine comprises a Class 1 laser system safe for users and bystanders. However the
invisible engraving laser, the laser tube, and its electrical connections remain EXTREMELY dangerous. Used or
modified without care, they can cause serious property damage and personal injury including but not limited to the
following:
• The laser will easily burn nearby combustible materials
• Some working materials may produce radiation or harmful gases during processing
• Direct exposure to the laser will cause bodily harm including serious burns and irreparable eye
damage
As such,
• DO NOT modify or disable this device's provided safety features. Do not modify or disassemble the laser and
do not use the laser if it has been modified or disassembled by anyone except trained and skilled professionals.
Dangerous radiation exposure and other injury may result from the use of adjusted, modified, or otherwise
incompatible equipment.
• NEVER leave any part of the cabinet open during operation. 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.
Protect yourself from potentially reflected laser beams by using protective eyewear specially designed to filter
the specific wavelength of your engraver'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
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closed and/or wearing protective eyewear. Exercise caution with the red dot positioning light as well, as its direct
beam is a Class 1 laser in its own right.
• ONLY use this engraver if its automatic shutoffs are working properly. When you first get this engraver and if
you subsequently notice any problems, test them (see below) before undertaking any other work. Do not continue
use if the shutoffs do not occur. Turn off the device and contact customer service or your repair service. Never
disable these shutoffs.
• 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 38°C (100°F). For best
results, keep it between 15–21°C (60–70°F). 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 10°C (50°F).
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
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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 nearby where they could
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.
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