Main Power Connection; Initial Testing - Omtech USB3020A User Manual

3.7 Main Power Connection

Confirm that the labeling beside the connection socket on the machine matches your power supply. Connect one
end of the main cable to the connection socket and the other end to a grounded outlet. Under NO circumstances
should you switch on the device if the voltages do not correspond.
Fluctuation along the line should be less than 5%. If this is exceeded, the fuses will blow. They are located in the
connection socket and are accessible from the exterior. Similarly, do not connect this device to standard extension
cords or power strips. Connect it directly to a grounded outlet or use a surge protector rated over 2000J.

3.8 Initial Testing

Emergency Stop
Because of the risk of fire and other hazards during engraving, this engraver includes a large and easy-to-reach
emergency stop button near the control panel. Press it down to stop the laser tube instantly.
When your engraver arrives, its e-stop should be pressed down and must be pulled up to allow the laser to function.
You should test that it works properly before conducting ANY other work with your machine. Start the water cooling
system, place a piece of laserable scrap material on the workbed, close the cover, and press the laser test switch to
fire the laser. Hit the emergency stop button and observe whether the laser stops instantly. If the laser continues to
fire, the emergency stop is not working and must be replaced before the engraver can be used. Turn off the machine
and contact customer service.
Cover Shutoff (Interlock)
Because of the risk of blindness, burns, and other injury from direct exposure to the invisible engraving beam, this
device also shuts off the laser automatically when the protective cover is raised during operation.
After ensuring that the emergency stop button works, you should also test that the cover shutoff works properly before
conducting any other work on your machine. Start the water cooling system, place a piece of laserable scrap material on
the workbed, close the cover, and press the laser test switch to fire the laser. Release the button. Taking care not to
expose yourself to seeing or being hit by any possible reflected laser light, open the cover as little as possible and attempt
to fire the laser again. If the laser fires, the automatic shutoff is not working and must be repaired before the engraver
can be used. Turn off the machine and contact customer service.
Laser Path Calibration
Although our factory calibrates your entire system during assembly, it is possible for the laser tubes, the focus lens,
and/or one or more of the mirrors to be jostled out of alignment during shipment. As such, it is recommended that you
perform an optical alignment test as part of setting up your machine. Be especially mindful NOT to look at the laser
directly during this initial process. See the Maintenance section below for step-by-step guidance.
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