Visual Inspection

Good welding

Dipmeasure or welding current too low, lift too small

Welding time too long or welding current too high

Welding time too short or welding current too low

Blowing action

Stud hang-up

Arc Blow

Chuck

Centre Punch

Centring Device

Proceed as follows

• Remove the standard foot ring by loosening the three grub screws on the circumference of the welding gun. Mount the centring device (B) and fasten it. Loosen the retaining nut by turning 90° with a socket spanner.
• Insert the straight pin (4) in the gun instead of the chuck.
• Tighten the retaining nut with the socket spanner.
• Screw the centring tube (8) you have chosen in the centring device.
• Loosen the three screws (C) if necessary.
• Place the centring disk (9) on the straight pin (4) and then on the centring tube (8).
• Fasten the three screws (C). The centring tube is then positioned centrally in relation to the studs.
• Then take off the centring disk and remove the straight pin after loosening the retaining nut.
• Replace the striking pin with locknut and brass thread end in the chuck with the chuck extension (order no. see chapter 5.4).
• Place a stud in the chuck and set the length (see chapter 4.2, point4).
• Place the chuck equipped in this way in the gun and tighten the retaining nut again with the socket spanner.

Intermediate Ring

Mounting :

• Remove the three positioning feet.
• Screw the intermediate ring on tight with the Allen screws (2).
• Then screw the positioning feet into the intermediate ring.

Visual inspection

1. Good welding:

2. Welding too hot:

3. Welding too cold:

1. The welding elements and workpieces must be weldable. Only use material combinations specified in these operating instructions (otherwise suitable tests must be carried out beforehand to confirm the necessary quality features).

2. Make sure that the maximum roughness of the welding zone does not exceed 80µm.

3. The welding zone should be metallically bright: Workpieces of aluminium or with aluminium coating may only be cleaned with a rust-free wire brush. Carefully remove all soiling like rust, scale, paint, moisture, grease and oil. Strip anodised workpiece surfaces with a caustic soda lye or grind them clean.

4. The welding site must be designed so that there is always a surface of at least Ø 40mm available to receive the positioning feet. When using centring tubes or similar, at least Ø 20mm.

5. Make sure the workpiece is supported such that it is free of vibrations. This is especially important in the case of large and thin walled workpieces.

6. Always lay the welding and earth cables free of loops. In this way electromagnetic influences can largely be avoided.

7. Fasten the earth clips symmetrically to the welding site and not too close to it. In this way flaws in the weld quality caused by arc blowing can be avoided.

8. Make sure there is a good transfer of current (low resistance) at all contact points in the welding circuit (welding cable connections, chuck, earth cable connection, earth clips).

9. Observe the necessary settings on the welding gun and power unit for your welding job. 4.

10. The welding gun and workpiece may not be moved during the welding process.

11. Always pull the gun off the welding element vertically. This prevents overstretching of the chuck blades.

12. Avoid welding on one workpiece with more than one welding system at the same time (possible influence on the arcs).

13. In order to check that the settings are correct, a number of trial welds should always be performed before commencing work. The quality of the welding results must be checked.

14. Check the clamping force of the chuck blades from time to time and bend them together a little if necessary. This increases the lifetime of the chuck.