should not be used with any lid open to avoid potential permanent injury.
It should also be noted that both the cooling water system and the exhaust
system are absolutely necessary for the safe use of this equipment. Do not
operate the engraving machine without these two systems functioning
properly. The water should always be clean and kept around room
temperature, and the exhaust system should always comply with all laws
and regulations applicable to the workplace and ambient air quality.
The following symbols are used on the label of this machine or in this
manual:
These items carry a risk of serious property damage or personal injury
These projects solve similar serious problems related to laser beams.
These projects solved similar serious problems with electrical
components.
Anyone around the unit should wear protective glasses during operation.