Water Cooling System - Omtech USB3020A User Manual

3.4 Water Cooling Installation
The provided water pump is essential to your engraver's performance and longevity. When this laser works
without a properly maintained cooling system, its glass tube WILL explode from excess heat.
NEVER touch or adjust your engraver's water supply while the pump is connected to its power supply.
To install your pump, fill a dedicated tank with distilled water. Using deionized or tap water will gradually degrade the
quality of your engraver and may even cause dangerous mineral buildup in the cooling system. NEVER use antifreeze
for the same reason.
Connect the two hoses that came with your engraver to the water inlet (marked "Water IN") and water outlet (marked
"Water OUT") on the back of your engraver. Attach the other end of the inlet tube directly to your pump and completely
submerge the pump in your water tank. Place the outlet tube into the tank in such a way that the returning water flows
into the tank without splashing or other problems.
Connect the water pump to its power supply. For best results, use a power outlet on a separate fuse from the engraver
itself. If no such outlet is available, the pump can also be plugged into a dedicated socket located on the side of the
engraving cabinet. Once the pump is plugged in, water should begin to run through your machine and back into your
tank. ALWAYS obtain visual confirmation that the water is flowing through the laser tube before starting your laser.
NEVER allow the water in the tank to become too hot to cool the laser. Heat damage can occur quickly and severely
shorten the life of the laser tube. Periodically check the water's temperature on the built-in digital display, ensuring it
stays between 60–70°F (15–21°C). If the water begins to reach 75°F (24°C), replace it with cooler water. Either replace
it in stages or turn off the laser during this process: never allow the laser to operate without a constant flow of cooling
water. It is also possible to add sealed bottles of frozen water to your tank to keep the water cool but never allow the
water to become ice cold itself, as this could shatter the heated glass CO₂ tube as well.
As an alternative to manually adjusting the water in your tank, you may also use an industrial water chiller to supply
temperature-controlled water to your machine. We recommend the CW-3000 9L chiller (not included). If using it with
this engraver, follow its separate manual and plug it into an outlet on a separate fuse from the engraver itself.
Remember to periodically check the laser power source's temperature on the built-in digital display, ensuring that it
never exceeds 100°F (38°C). If the laser power source approaches this temperature, shut down the engraver and let it
rest for at least 30 minutes.
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Inlet
Outlet