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Mid-frequency spot welding machine alarms: Overcurrent, overheating, water shortage – Quick troubleshooting methods
Jun 30,2026
Medium-frequency spot welding machines are widely used in industries such as hardware manufacturing and automotive production. During daily operation, overcurrent, overheating, or insufficient water supply trigger high-frequency alarms. Upon alarm activation, the equipment automatically shuts down, which not only disrupts production schedules but may also damage components. The specific troubleshooting methods and precautions are as follows:
1. Steps for Emergency Alarm Response
1. Immediately shut down the equipment and cut off power to prevent the fault from worsening;
2. Record the alarm type and identify the corresponding cause;
3. After completion of processing, conduct a test run; resume production only if no abnormalities are detected, and avoid arbitrary power-on resets.
II. Handling by Category
(1) Overcurrent Alarm
1. Causes: Current exceeding the rated threshold, abnormal load, or line interference.
2. Handling procedure: First, cut off power to cool the device, then verify welding parameters and circuit grounding to avoid blindly reducing current, which may compromise welding quality. Additionally, inspect internal components for proper functionality.
(II) Overheat Alarm
1. Causes: Poor heat dissipation, excessive load, or high ambient temperature.
2. Handling measures: Stop operation to allow cooling, inspect the cooling system, reduce welding load, and avoid continuous heat generation.
(III) Water shortage alarm
1. Causes: Clogging of the cooling water circuit, insufficient water flow, or circuit malfunction.
2. Handling measures: Promptly replenish water, investigate potential water flow obstructions, ensure proper operation of the cooling system, and prevent component damage due to overheating.
III. Common Operational Misconceptions
1. Forcibly resetting or repeatedly restarting the device after an alarm can easily cause secondary component damage and pose safety hazards;
2. Using ordinary tap water during dehydration can easily lead to scale formation, clogging water passages and compromising cooling efficiency.
3. Overheating only triggers shutdown for cooling without addressing the root cause, leading to frequent alarm activations;
4. Blindly reducing current during overcurrent conditions fails to address the root cause and adversely affects welding quality;
5. Neglecting grounding inspection may easily trigger false overcurrent alarms and pose safety hazards.
IV. Daily Preventive Measures
1. Perform daily inspections of the cooling system, wiring, and grounding conditions;
2. Perform regular equipment maintenance, adhere to standardized operating parameters, and avoid arbitrary adjustments;
3. Conduct regular inspections to identify potential faults in advance and prevent alarms from occurring during mass production.
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Wuxi HAIFEI Intelligent Equipment Co., Ltd.
Wuxi HAIFEI Welding Equipment Co., Ltd.
Add: 28 Shuiyun Road, Yuecheng, Jiangyin, Jiangsu Province, China. (Postal Code: 214404)
Mobile: +86 18151507807
Email: info@jshaifei.com