General Recommendations for the Use
of Welding Equipment
Welding inverters are highly reliable and equipped with a range of protective features. However, following these recommendations can significantly reduce the likelihood of equipment failure and make welding tasks more comfortable and efficient.
1. Avoid Placing the Device on the Ground
One of the most important tips is to avoid placing the welding inverter directly on the ground while working. The device’s cooling fan can draw in dust, especially fine particles from grinding or cutting metal or concrete, which can damage the internal components. This is particularly harmful in dusty environments. Regular maintenance, such as removing the metal casing and blowing out the internal components with compressed air (using a pressure no higher than 4 bar) or cleaning with a soft brush, is recommended. Doing so improves heat dissipation and helps the cooling system work more effectively, extending the inverter’s working time before the thermal protection engages. This is particularly important in hot climates or during summer months.
2. Ensure Proper Ventilation
Proper air circulation is essential for maintaining the inverter’s performance. Make sure the ventilation holes are not obstructed, and position the inverter at least 30 cm away from any walls or objects that may block airflow. Operating the device with a faulty fan, or if either of the two fans (if present) is not working, is strictly prohibited as it can lead to overheating and equipment damage.
3. Allow the Device to Acclimate to Temperature Changes
When bringing the welding inverter from a cold environment into a warmer space, allow it to sit for at least two hours before plugging it in. This waiting period helps prevent moisture buildup inside the device, which can cause electrical malfunctions.
4. Cool Down the Inverter Before Turning It Off
After completing a welding task, avoid turning off the inverter immediately. When shut down hastily, internal components remain hot and continue to warm up for a period of time. Allow the device to run idle for 3-5 minutes to cool down, and wait until cold air is flowing out of the ventilation holes before powering off the unit. This prolongs the lifespan of internal components.
5. Check Cable Connections
Always ensure that welding cables are securely connected. Given the high currents used, any loose connection can cause arcing, which worsens the contact over time and may lead to equipment failure. It is recommended to use factory-supplied welding cables and avoid making significant changes to cable lengths. Extending cables excessively can result in current loss and altered device performance, as the cables are an integral part of the electrical circuit.
Similarly, make sure the power supply wire is securely connected at the plug-socket interface. If using an extension cable, opt for one with a copper conductor cross-section of at least 2.5 mm² and a maximum length of 10 meters. Excess cable should not be coiled, as this can cause heating and voltage loss.
6. Monitor Power Supply Voltage
All performance specifications for welding machines are based on a standard 220-230V power supply. Although some devices can operate within a voltage range of 170-270V, their performance at 170V will be noticeably lower than at 220V. To compensate for this, you may need to increase the welding current settings.
7. Prevent Moisture Ingress
Moisture is the enemy of electrical equipment, and welding inverters are no exception. If moisture gets inside the device, dry it thoroughly before operating. Storing welding equipment in damp environments, such as garages or basements during winter, is not recommended, as this can lead to corrosion and equipment damage.
By following these guidelines, you can extend the lifespan of your welding inverter, enhance performance, and reduce the chances of premature failure.
