Water Cooling Installation - Omtech SH-H1060 User Manual

3.5 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 power.
To install your pump, fill a dedicated tank with at least 7.5 litres (1.6 gal.) of distilled water. Using deionised 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. Store your engraver in a climate-controlled area that
meets all the requirements of the Safety Information and Location Selection sections above.
Connect the two hoses that came with your engraver to the water inlet (marked "Water Inlet") and water outlet
(marked "Water Outlet") 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. Install a thermal alarm or periodically check
the water's temperature during prolonged use. If the water begins to reach 38°C (100°F), 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. Follow its separate manual and again, for best results, plug it
into a separate fuse from the engraver itself. Remember to connect the chiller's outlet port with the engraver's inlet
port and to connect the chiller's inlet with the engraver's outlet.
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