焊机维修前应先做以下检查：

Before welding machine maintenance should do the following check:

1. 焊机前面板各开关位置是否正确。

1. The welder front panel switch bbbbbbbb is correct.

2. 三相电源的线电压是否在340V~420V范围内；是否有缺相。

2. Three phase power line voltage is 340 v to 420 v range; If there is a lack of phase.

3. 焊机电源输入电缆是否正确可靠。

3. The welding machine power bbbbb cable is correct and reliable.

4. 焊机接地线是否可靠正确

4. The welder reliable grounding line is correct

5. 焊机电缆接线是否正确，接触是否良好。

5. Cable wiring is correct, contact are in good condition.

6. 气路是否良好，CO2气体调节器是否正常。

6. Gas circuit are in good condition, CO2 gas regulator is normal.

螺柱焊机 http://www.jnjinjiayuan.com/

济南电缆桥架,山东电缆桥架,章丘电缆桥架http://www.hongjiqiaojia.com/