Design and function
TIG welding
24
099-000124-EW501
29.07.2011
5.6.2
Torch connection options and pin assignments
5
4
3
2
1
BT
I1
I2
A
C
E
D
G
H
F
B
Poti UD/ein
Poti UD/ein
IH-Down
Uref 10V
Uref 10V
Up
0V
BT1
BT2
Up
Down
+
-
BT2
+
BT1
-
Figure 5-4
5.6.3
Shielding gas supply (shielding gas cylinder for welding machine)
WARNING
Incorrect handling of shielding gas cylinders!
Incorrect handling of shielding gas cylinders can result in serious and even fatal injury.
• Observe the instructions from the gas manufacturer and in any relevant regulations
concerning the use of compressed air!
• Place shielding gas cylinders in the holders provided for them and secure with fixing
devices.
• Avoid heating the shielding gas cylinder!
CAUTION
Faults in the shielding gas supply.
An unhindered shielding gas supply from the shielding gas cylinder to the welding
torch is a fundamental requirement for optimum welding results. In addition, a blocked
shielding gas supply may result in the welding torch being destroyed.
• Always re-fit the yellow protective cap when not using the shielding gas connection.
• All shielding gas connections must be gas tight.
NOTE
Before connecting the pressure regulator to the gas cylinder, open the cylinder valve
briefly to expel any dirt.