Optimizing fume extraction efficiency

The following factors help maximizing the fume extraction efficiency of a Flexlite GF welding gun.

Welding positions and joint types

The most effective position for fume extraction is the flat position (on the left) because the fumes naturally rise upward.

The following figures display how joint types affect fume capture efficiency. The best optimization is shown on the left.

Wire material and gun angle

When welding with solid wires, weld with a 0 ... 15° pushing gun angle.

When welding with flux-cored wires, weld with a 0 ... 15° pulling gun angle.

Removal of residual fumes

At the end of welding, hold the fume extraction gun in place for 10 ... 15 seconds. This allows the gun to remove residual fumes as the weld is cooling.