16
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, fi ll a dedicated tank with at least 2 gallons (7.5 L) of 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 generic antifreeze for the same reason. Use custom laser-safe formulations or store
your engraver in a climate-controlled area.
Connect the two hoses that came with your engraver to the water inlet and 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 fl ows 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 behind
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 confi rmation that the water is fl owing 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 100°F (38°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 fl ow 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.