Design and function
MIG/MAG welding
40
099-005403-EW501
10.2.2022
5.3.3.3 Inching the wire electrode
CAUTION
Risk of injury due to welding wire escaping from the welding torch!
The welding wire can escape from the welding torch at high speed and cause bodily in-
jury including injuries to the face and eyes!
• Never direct the welding torch towards your own body or towards other persons!
Incorrect contact pressure will cause extensive wear of the wire feed rollers!
• With the adjusting nuts of the pressure units set the contact pressure so that the wire
electrode is conveyed but will still slip through if the wire spool jams.
• Set the contact pressure of the front rollers (in wire feed direction) to a higher value!
The inching speed is infinitely adjustable by simultaneously pressing the wire inching push-
button and turning the wire speed rotary knob. The left display shows the wire feed speed
selected, the right display shows the current motor current of the wire feed mechanism.
Depending on the design of the device, the wire feed mechanism may be reversed!
Figure 5-19
Item Symbol Description
0
1
Welding wire
2
Wire feed nipple
3
Guide tube
4
Adjusting nut
• Extend and lay out the torch hose package.
• Carefully unwind the welding wire from the wire spool and insert through the wire feed nipples up to
the wire feed rollers.
• Press the inching push-button (the drive catches the welding wire and automatically guides it to the
welding torch outlet)
> see 4.2.1 chapter
.
A prerequisite for the automatic inching process is the correct preparation of the wire guide,
especially in the capillary and wire guide tube area
> see 5.3.1 chapter
.
