Anti-freezing Tips for Handheld Fiber Laser Welding Machines
    As winter approaches, operating a laser welding machine at temperatures below 7°C can cause significant problems. It is crucial to take effective anti-freezing measures to prevent the machine's cooling water from freezing, thereby avoiding damage during downtime and transportation. JASIC reminds users that damage to handheld fiber laser welding machines due to frozen cooling water is excluded from warranty coverage.

    The Importance of Anti-freezing Measures

    When cooling water freezes, its volume expands, causing deformation and rupture of the machine's internal cooling system components such as pipes, pumps, and filters. This can lead to collateral damage to other parts of the machine. Therefore, it is vital to follow these tips to properly maintain the machine in cold conditions.

    Essential Tips for Preventing Freezing

    •Maintain Working Temperature Above 7°C
    Ensure the environment where the machine operates is kept above 7°C. This can be achieved by using space heaters or relocating the machine to a warmer area.
    •Keep the Water Cooler Running
    Adjust the low and normal temperature settings of the cooling water to about 7°C. This ensures the coolant remains above the freezing point, preventing it from solidifying.
    •Drain Cooling Water After Use
    After each use, drain the cooling water from the machine and add anti-freezing coolant. This ensures that the liquid circulates and prevents freezing during periods of inactivity.
    •Use Appropriate Antifreeze
    Select antifreeze with a freezing point slightly lower than the lowest working temperature. This provides a buffer against unexpected temperature drops.

    Cooling Water Drainage Methods

    To empty the machine of cooling water, open the drain valve. This simple step is crucial in preventing water from freezing inside the machine.
    •Antifreeze Selection
    The best antifreeze is not necessarily the one with the lowest freezing point but one that has a freezing point slightly lower than the lowest working temperature.

    •Antifreeze & Distilled Water Proportion Table

    Proportion Ratio (Antifreeze : Distilled Water)
    Effective Temperature Range
    -42°C to -45°C
    -32°C to -35°C
    -22°C to -25°C
    -12°C to -15°C
    -2°C to -5°C

    Important Notices

    •Temporary Use of Antifreeze
    Antifreeze should not replace deionized water for year-long use. After winter, use deionized or distilled water to clean the pipes and resume using it as the coolant.
    •Continuous Operation in Secure Environments
    If possible, keep the water cooler running in a secured environment to prevent freezing. Upgrading the cooling circuit can also simplify the drainage of coolant, ensuring the system remains functional during cold weather.


    Taking proactive measures to prevent the freezing of cooling water in handheld fiber laser welding machines is essential for maintaining their functionality and longevity. By following the tips outlined above, users can protect their equipment from the damaging effects of freezing temperatures. Remember, the cost of preventive measures is minimal compared to the potential damage and downtime caused by frozen components.
    For more detailed guidance on maintaining your JASIC handheld fiber laser welding machine during winter, refer to the user manual and consult with JASIC's customer support team. By staying vigilant and prepared, you can ensure your welding operations continue smoothly, even in the coldest conditions.

    Additional Resources

    For a visual demonstration of how to properly maintain and operate your JASIC handheld fiber laser welding machine, check out this video demonstration.
    By adhering to these guidelines, you are not only safeguarding your equipment but also ensuring the safety and efficiency of your welding operations throughout the winter season.