Warning: Poor grounding will cause equipment failures and creates a serious safety hazard! We do not
assume any responsibility or obligation for faults or accidents caused by bad grounding.
Fig. 2–2. The exhaust pipe connected to the rear of the engraver.
Fig. 2–3. Fig. 2–4.
2.3. Install the exhaust pipe
Install the exhaust pipe to the fan as shown in Fig. 2 – 2 below. The pipe can be expanded to a full length
of about 1.5 metres (5 ft.). The other end of the pipe should be connected to a dedicated purifier or
placed out a window.
2.4. Ground the machine
Your laser engraver uses a class 4 laser. As mentioned in the Safety Instructions, this type of laser is
high voltage and potentially dangerous, so users must securely ground it during use to prevent buildup
of static electricity. The safe line-to-ground resistance should be less than 5Ω. Fig. 2–3 below shows
the location on the back of the engraver where the grounding cable should be connected. Fig. 2 – 4
shows a diagram of the necessary setup.
9
3 m
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