Introduction; General Information - Omtech SH-G570 User Manual

2 Introduction

2.1 General Information

Your laser engraver works by emitting a powerful laser beam from a glass tube filled with excited
carbon dioxide (CO ₂ ), catalyzing nitrogen (N ₂ ), and insulating helium (He), reflecting that beam off
three mirrors and through a focus lens, and using this focused light to cut and etch designs into
certain substrates.
The first mirror is fixed near the end of the laser tube, the second mirror travels along the machine's
Y axis, and the third mirror is attached to the laser head that travels along the X axis. Because some
dust from the engraving process settles on the mirrors, they require frequent cleaning. Because
they move during operation, they also require periodic readjustment using their attached positioning
screws to maintain the proper laser path.
Laser Path
Mirror 1
Mirror 2 Mirror 3
With low-intensity use, the provided laser tube has an average lifespan around 12,000 hours before
requiring replacement. However, constantly running your laser above 70% of its maximum rated
power can significantly shorten its service life. It is recommended to use settings from 10%–70% of
the maximum rated power to enjoy optimal performance and longevity.
Note that this is a high-voltage device and, as a safety precaution, it is recommended to only touch
its components with one hand at a time during use.
Note that the active laser is invisible to the human eye. This device should never be used while any
cover is open to avoid potentially permanent injury.
Note also that the water cooling system and exhaust system are both absolutely essential to the safe
use of this device. Never operate the engraver without both of these systems operating properly.
Water should always be kept clean and around room temperature, and the exhaust system should
always comply with all applicable laws and regulations for workplace and environmental air quality.
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