Omtech SH-G570 User Manual page 40

3 Installation
9. Completely submerge the pump in the water tank.
10. Connect one end of the other white hose to the water outlet at the back of your engraver and
secure it with the other hose clamp.
11. Put the other end into the tank in such a way
that the returning water flows into the tank
without splashing or other problems.
12. 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 the dedicated socket located on the back of the
engraver.
Once the plug is plugged in, water should begin to run through your machine and back into your
tank. When the water cooling system is in operation, pay attention to the following:
• ALWAYS obtain visual confirmation that the water flows through the laser tube before
starting your laser.
• Larger bubbles will pose a risk of overheating the laser tube. ENSURE there are no air bubbles
larger than 1 cm. If there are larger bubbles, check the water level in the water tank to fully
cover the water pump. You can tilt the engraver on the left side until the bubbles dissipate.
• 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 on the laser power
supply. For best results, keep it between 60 ℉ –70 ℉ (15 ℃ –21 ℃ ). If the water begins to come
near 100 ℉ (38 ℃ ), 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, as this could shatter the heated glass CO ₂
tube as well.
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