CHIEF M30, Instruction Manual, Page: 8 / 12

8. STUD WELDING TROUBLESHOOTING
1.) The ground cable or base metal are not making a good connection.
2.) Torch cable or ground cable is winding, coiled up, or crossed. Cables must be straight.
3.) The diameter of screw clamp and stud screw is not suitable, or screw clamp is worn.
4.) The base metal is dirty, rusty, painted, or other problem interfering with electricity conductibility.
5.) The torch is not suitable for the base metal or stud screw (material or diameter).
6.) The stud screw and the base metal are not making a good connection. (Keep the stud screw contacted to the base metal
vertically 90 degrees).
7.) The stud welding voltage is not correct.
8.) The capacitor is damaged, or limiting voltage.
9.) Welding torch must not have movement when welding. All feet must contact base metal.
10.) Stud screw extends too long or too short from the stud clamp.
11.) Base metal has distortion, dented or has moved while welding.
12.) Method for connecting the ground cable:
1.) Cable must connect the base metal directly. Two ground cables must be connected.
2.) The ground cable must connect to the diagonal position of the base metal. (Refer to the diagram as follow).
EARTH
EARTH
EARTH
EARTH
EARTH
Correct Connection Incorrect Connection
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