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4.1 Operation Overview

Operate this laser marking machine only in accordance with all the instructions provided in this manual. Failure to

follow the proper guidelines detailed here can result in property damage and personal injury.

Before beginning to use the machine, make sure that you have read this entire manual (particularly the Safety Information

above) and any and all warnings provided on the machine itself.

If you're using LightBurn software, please refer to your separate LightBurn manual (not included) for speciﬁ c operation

instructions.

4.2 General Operation Instructions

Step 1. Create a design that you'd like to engrave. You can do this using any graphics program, saving or converting

the ﬁ le to a format compatible with the engraver. See the full list of acceptable ﬁ le types in the Technical

Speciﬁ cations section above.

Step 2. Check that your water tank is full of clean and cool but not cold distilled water. Replace the water if it is not clean

or cool. Add more water if it is not completely covering the water pump. Turn on the water pump by plugging it in

or (if it's plugged into the engraver directly) by turning and pulling the emergency stop button. Visually conﬁ rm

that the water is ﬂ owing through the whole system either by opening the top rear door to look at the laser tube

itself or by observing that water is entering the machine and returning to the tank through the outlet tube. If the

laser tube is examined directly, remember to close its access door before continuing. Add more distilled water if

the pump is no longer well covered after ﬁ lling the engraver’s water tubing.

Step 3. Turn on your fume extractor or ventilation system, if any. (The engraver’s own exhaust fan will turn on with the

machine.)

Step 4. Open the engraver’s cover and place a dry and clean piece of your material on the workbed. If working with

a new material, ﬁ rst check that it can withstand the heat of the laser and will not release harmful fumes when

processed.

Conﬁ rm that the distance from the laser head’s focus lens to the top of your material exactly matches the lens’s

focal length (see §1.4).

If the distance is too long, you can either move the manual focusing knob down, use a thicker piece of material,

or ﬁ nd a safe way to elevate your material to the correct distance. If the distance is too short, move the manual

focusing knob up or remove the screws at each corner of the workbed and lift it out.

4. Operation

Omtech USB3020N User Manual

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