Fig. 11
: Adjusting the distance be-
tween electrodes
Make sure the distance between the electrodes is
6 to 8 mm.
Carry out the first welds, and then check the distance
again. Re-adjust, if necessary.
Use an Allen key SW5 as gauge in between the tips:
Electrode tip Allen key Electrode tip
Aligning electrodes
Fig. 12
: "Electrode must be in true
alignment"
Be sure to look from different angles. Electrodes must
align no matter how you look.
5.2 Preparation of the welding area
The plates must be ground down to the bare metal at the contact point of the spot electrode
with the plate.
Take care not to damage galvanised surfaces. In the case of insulating intermediate layers
such as spot welding primer, electrical contact (auxiliary connection) first has to be made us-
ing a vice-grip wrench. Then set the first welding point directly alongside this contact
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