Design and function
TIG welding
40
099-004854-EW501
19.02.2014
5.8
TIG welding
5.8.1
Welding torch and workpiece line connection
CAUTION
Equipment damage due to improperly connected coolant lines!
If the coolant lines are not connected or a gas-cooled welding torch is used, the coolant
circuit is interrupted and equipment damage can occur.
• Connect all coolant lines correctly!
• When using a gas-cooled welding torch, add a tube bridge to the coolant circuit (see
chapter “Accessories”).
NOTE
Prepare welding torch according to the welding task in hand (see operating instructions
for the torch).
Figure 5-7
Item Symbol
Description
0
1
Connection socket, welding current “-” (with DC- polarity)
connection TIG welding torch
2
5-pole connection socket, welding torch control lead
3
G1/4" shielding gas connecting nipple, welding machine output
Connection to the welding torch or gas metering unit (GMU)
4
Connection socket, “+” welding current
Connection for workpiece lead
