Omtech SH-G1610 User Manual page 45

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 Pulse 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.
3.8.3 Water Shutoff
Because of the danger posed by an uncooled laser tube, this engraver also shuts off the laser
automatically when the water cooling system malfunctions.
After ensuring that the emergency stop button and cover protection both work, you should also
test that the water 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 Pulse to fire the laser. Release the button. Cut off the flow of water by crimping or tying
the two hoses. (Take care not to damage the hoses themselves in this procedure.) 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. If the laser does not
fire, the automatic shutoff is working fine; simply release the two hoses to begin circulating water
again and continue setting up your engraver.
3.8.4 Laser Path Calibration
Although our factory calibrates your entire system during assembly, it is possible for the laser tube,
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. See the Maintenance section below for step-by-step guidance.
3.8.5 Air Assist
Your air assist should arrive preinstalled and correctly wired.
Simply check that it is correctly configured and connected as
shown. If any tubing or wiring needs to be reconnected, shut off
all power to the machine (including by pressing the emergency
stop) before adjusting anything. Check that its air intake filter is in
place, clean, and not obstructed by any nearby objects.
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