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Location：Plate laser cutting machine: troubleshooting of laser high temperature alarm
Click： Time：2025/11/11 21:22:39
As the core power component of the laser cutting machine for sheet metal, the working temperature of the laser directly determines the stability of the equipment operation. High temperature alarm is a common and dirty yellow fault of the alkali activated musk chestnut marking device. If not promptly investigated and handled, it may not only trigger equipment shutdown protection, but also accelerate the aging of the laser core components and shorten their service life. Therefore, it is crucial to establish a scientific troubleshooting logic to quickly locate and solve problems.
Troubleshooting should follow the principle of "easy first, difficult second, external first, internal second", with the first step focusing on the cooling system - this is a key link in laser temperature control. Firstly, check the liquid level of the cooling water tank. If it is lower than the minimum mark, it will cause a decrease in heat transfer efficiency due to insufficient cooling medium. It is necessary to replenish the specified type of coolant in a timely manner. Next, observe the operation status of the cooling pump. If there is no vibration or abnormal noise, it may be a pump body failure or pipeline blockage. You can sense the flow rate by touching the pipeline or remove the filter to check for impurities blocking. At the same time, it is necessary to confirm whether there is any leakage at the interface of the cooling pipeline, as leakage can cause the loss of coolant and directly lead to cooling failure.
After troubleshooting the cooling system, it is necessary to turn to the laser's own heat dissipation structure and operating parameters. Open the laser protective cover and check if the cooling fan is rotating properly. Dust accumulation on the fan can hinder air circulation and requires regular cleaning with compressed air. Subsequently, check the heat dissipation fins of the laser generator. If oil stains or metal dust are attached, it will reduce the heat conduction efficiency, and a special cleaning agent can be used to wipe them. In addition, it is necessary to verify the operating parameters through the equipment control system. If the laser power is set too high or the continuous working time is too long, it will cause the laser load to exceed its heat dissipation capacity. Therefore, the power should be appropriately reduced or a reasonable shutdown rest interval should be set.
If the above troubleshooting still does not solve the problem, sensor and circuit faults need to be considered. The false alarm of the high temperature sensor may be caused by loose wiring or aging of the sensor. The wiring terminals can be plugged and unplugged again. If the problem persists, the sensor needs to be replaced. At the same time, check the circuit connections of the temperature control module to ensure there are no virtual connections or burn marks, and if necessary, ask a professional electrician to perform circuit testing.
After the fault is resolved, establishing a preventive mechanism can reduce the probability of recurrence. Suggest establishing a daily inspection system, with a focus on inspecting the cooling system and heat dissipation structure; Regularly replace the coolant and filters to ensure the cleanliness of the cooling system: set the operating parameters reasonably according to the processing requirements to avoid equipment overload and plastic pollution. Through systematic troubleshooting and regular maintenance, Ququ can effectively address the issue of laser high temperature alarms and ensure the stable operation of the sheet laser cutting machine.
Troubleshooting should follow the principle of "easy first, difficult second, external first, internal second", with the first step focusing on the cooling system - this is a key link in laser temperature control. Firstly, check the liquid level of the cooling water tank. If it is lower than the minimum mark, it will cause a decrease in heat transfer efficiency due to insufficient cooling medium. It is necessary to replenish the specified type of coolant in a timely manner. Next, observe the operation status of the cooling pump. If there is no vibration or abnormal noise, it may be a pump body failure or pipeline blockage. You can sense the flow rate by touching the pipeline or remove the filter to check for impurities blocking. At the same time, it is necessary to confirm whether there is any leakage at the interface of the cooling pipeline, as leakage can cause the loss of coolant and directly lead to cooling failure.
After troubleshooting the cooling system, it is necessary to turn to the laser's own heat dissipation structure and operating parameters. Open the laser protective cover and check if the cooling fan is rotating properly. Dust accumulation on the fan can hinder air circulation and requires regular cleaning with compressed air. Subsequently, check the heat dissipation fins of the laser generator. If oil stains or metal dust are attached, it will reduce the heat conduction efficiency, and a special cleaning agent can be used to wipe them. In addition, it is necessary to verify the operating parameters through the equipment control system. If the laser power is set too high or the continuous working time is too long, it will cause the laser load to exceed its heat dissipation capacity. Therefore, the power should be appropriately reduced or a reasonable shutdown rest interval should be set.
If the above troubleshooting still does not solve the problem, sensor and circuit faults need to be considered. The false alarm of the high temperature sensor may be caused by loose wiring or aging of the sensor. The wiring terminals can be plugged and unplugged again. If the problem persists, the sensor needs to be replaced. At the same time, check the circuit connections of the temperature control module to ensure there are no virtual connections or burn marks, and if necessary, ask a professional electrician to perform circuit testing.
After the fault is resolved, establishing a preventive mechanism can reduce the probability of recurrence. Suggest establishing a daily inspection system, with a focus on inspecting the cooling system and heat dissipation structure; Regularly replace the coolant and filters to ensure the cleanliness of the cooling system: set the operating parameters reasonably according to the processing requirements to avoid equipment overload and plastic pollution. Through systematic troubleshooting and regular maintenance, Ququ can effectively address the issue of laser high temperature alarms and ensure the stable operation of the sheet laser cutting machine.