How to troubleshoot welding machine failures?
Maintenance of the butt welding machine should be carried out after the power is cut off, and the maintenance should be carried out by a professional electrician; the vulnerable parts of the butt welding machine include left and right electrodes, and the material is chromium-zirconium alloy copper.
The welder does not work when the control button is pressed:
Solution:
1. Check whether the power supply voltage is normal;
2. Check whether the control circuit wiring is normal;
3. Check whether the AC contactor is normally closed;
4. Check whether the main transformer coil is burned out;
Loosen the control button or travel screw to touch the travel switch, and the transformer will still work:
Solution:
1. Check whether the control button and travel switch are normal;
2. Check whether the AC contactor and the intermediate relay armature are stuck with oil and cannot be disconnected, causing the main transformer to continue to supply power;
Welding is abnormal and there should be no spatter
Solution:
1. Check whether the workpiece is dirty, has oil stains or rust marks;
2. Check whether the screw clamping mechanism can clamp the workpiece;
3. Check whether the electrode jaws are smooth and clean and whether there are iron marks;
The AC contactor cannot be welded normally and makes abnormal noises.
Solution:
1. When welding, measure whether the incoming line voltage of the AC contactor is 300V lower than its own release voltage;
2. Check whether the lead is too thin or too long or the voltage drop is too large;
3. Check whether the network voltage is too low and cannot work properly;
4. Check whether there is a short circuit in the main transformer, causing too much current;
5. Repair, replace parts, and adjust according to the faulty parts detected;