I. Immediate shutdown: Cut off the source of risk
Immediately turn off the power switch and disconnect the input cable to ensure the equipment is completely powered off.
If welding is in progress, do not forcibly interrupt the output. Wait until the current cycle ends or the automatic protection is triggered before disconnecting the power to avoid impacting the power grid.
After shutdown, hang a "Equipment Abnormal, Do Not Operate" warning sign to prevent accidental restarting.
II. Cooling system inspection: Troubleshooting heat dissipation failures
1. Check the cooling fan status
Observe whether the fan is rotating and whether there are any abnormal noises or jamming.
If it stops, check the power supply line, control signals, and the motor itself. Replace it if necessary.
2. Clean the ventilation channels
Use dry compressed air to blow away dust from the air inlet/outlet, heat sink, and internal parts to prevent blockages that can lead to heat accumulation.
3. For water-cooled models, check the water system
Check whether the coolant is sufficient and whether the water pipes are aged, leaking, or bent.
Check whether the water pump is working properly and whether the outlet water temperature is abnormally high (>45℃).
III. Load Control: Preventing Heat Accumulation from Recurring
Stop continuous operation and allow the equipment to cool naturally for at least 30 minutes.
Reassess the work rhythm. Subsequent welding should adhere to the equipment's rated duty cycle (e.g., 60%). It is recommended to stop the machine for 10-15 minutes to cool after every 3-5 welding sessions.
Avoid prolonged operation in high-temperature environments (>40℃) or enclosed spaces. If necessary, install an external fan for auxiliary cooling.
IV. Safety Protection: Ensuring Personnel and Site Safety
1. Wear Protective Equipment: Wear high-temperature resistant gloves and goggles during operation to prevent burns from contact with high-temperature components.
2. Check Insulation and Grounding: Use a megohmmeter to test the insulation resistance between the input terminal and the casing. It should be ≥1MΩ; the grounding resistance should be ≤0.1Ω to prevent leakage risks.
3. Set Up Fire Monitoring: If the equipment has emitted smoke or a burning smell, fire extinguishers should be available nearby, and a dedicated person should monitor the area for a period of time to confirm there is no smoldering risk.
