Design and function
MMA welding
099-007021-EW501
29.07.2015
69
5.12 MMA welding
CAUTION
Risk of being crushed or burnt.
When replacing spent or new stick electrodes
• Switch off machine at the main switch
• Wear appropriate safety gloves
• Use insulated tongs to remove spent stick electrodes or to move welded workpieces and
• Always put the electrode holder down on an insulated surface.
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
voltage and dirt).
5.12.1 Connecting the electrode holder and workpiece lead
Figure 5-35
Item Symbol
Description
0
1
Connection socket, welding current “-” (with DC- polarity)
connection for Electrode holder
2
Connection socket, welding current “+” (with DC- polarity)
Connection for workpiece lead
• Insert cable plug of the electrode holder into either the "+" or "-" welding current connection socket and
lock by turning to the right.
• Insert cable plug of the workpiece lead into either the "+" or "-" welding current connection socket and
lock by turning to the right.
