Water Cooling System - Omtech SH-G570 User Manual

6 Maintenance

6.3 Water Cooling System

NEVER touch or adjust your engraver's water supply while the pump is still
connected to power.
Always fill the water tank with deionized or distilled water or a custom-purpose
laser-safe antifreeze. Using tap water for any purpose but rinsing out cleansers
(see § 7.2.2 Cleaning the Cooling System
quality of your engraver and may even cause dangerous mineral buildup within
the cooling system. Never use generic antifreeze for the same reason.
Always make sure the water cooling system is in good conditions by doing the following checks:
• The laser tube requires cool and clean distilled water to avoid overheating. Tepid water at room
temperature or a little below is ideal.
• The laser tube requires at least 2 gallons (7.5 L) of cool and clean distilled water or other
lasersafe coolant to avoid overheating. Check that the tank is at least 2 gallons (7.5 L) of water
before and after each use.
• If the temperature of the water ever approaches 100 ℉ (38 ℃ ), discontinue work until it has
cooled or find a way to reduce its temperature without interrupting the supply of water to the
laser tube. The water should never be allowed to become too cold either, which could also
cause the glass laser tube to shatter during use. During winter or if ice is used to cool hot water,
ensure the temperature never falls below 50 ℉ (10 ℃ ).
• More water should be added every few days to ensure evaporation does not cause the pump to
become exposed during use
• Ensure that the temperature of the cooling water does not fall below the dew point of the
surrounding air to prevent condensation. Here are some tips to prevent condensation:
 Use a hygrometer to monitor the temperature and humidity levels in the environment.
 If possible, increase the ambient temperature to be lower than the temperature of the
cooling water.
 Lower the relative humidity of the room, for instance, by using a dehumidifier.
 Insulate the cooling water pipes to reduce the likelihood of their surfaces falling below the
dew point.
 Regularly check the cooling system to ensure it is operating at optimal conditions.
Adjust the above measures appropriately according to your specific environment and equipment
requirements.
above) will gradually degrade the
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