Design and function
MMA welding
099-000125-EW501
29.9.2022
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5.3 MMA welding
5.3.1 Connecting the electrode holder and workpiece lead
CAUTION
Risk of crushing and burns!
When changing stick electrodes there is a risk of crushing and burns!
• Wear appropriate and dry protective gloves.
• Use an insulated pair of tongs to remove the used stick electrode or to move welded work-
pieces.
Electrical voltage at the shielding gas connection!
During MMA welding open circuit voltage is applied at the shielding gas connection
(G¼" connecting nipple).
• Place yellow insulating cap on the G¼" connection nipple (protects against electrical vol-
tage and dirt).
Figure 5-27
Item Symbol Description
0
1
Electrode holder
2
Connection socket, “-” welding current
Workpiece lead or electrode holder connection
3
Workpiece
4
Connection socket for "+" welding current
Electrode holder or workpiece lead connection
5
Connection thread - G¼"
Shielding gas connection (inlet)
• Insert the electrode holder plug and workpiece lead into the welding current socket depending on ap-
plication and lock in place by turning to the right. The corresponding polarity will be based on the infor-
mation of the electrode manufacturer on the electrode packaging.
• Fit yellow protective cap onto G¼" connecting nipple.
