Design and function
TIG welding
30
099-002032-EW501
29.04.2010
5.7.1.1
Connecting the shielding gas supply
• Secure the shielding gas cylinder using a securing chain.
Figure 5-9
Item Symbol Description
0
1
Pressure reducer
2
Shielding gas cylinder
3
Output side of the pressure reducer
4
Cylinder valve
• Tighten the pressure reducer screw connection on the gas bottle valve to be gas-tight.
• Screw the shielding gas connection of the welding torch to the pressure reducer on the shielding gas
cylinder.
•
Slowly open the gas cylinder valve.
•
Open the rotating valve on the welding torch
Before each welding process, the rotating valve must be opened; after the welding process, it
must be closed.
•
Set the required amount of shielding gas on the pressure reducer, about 4 - 15 l/min depending on the
current strength and the material.
Rule of thumb for gas flow rate:
Diameter of gas nozzle in mm corresponds to gas flow in l/min.
Example: 7 mm gas nozzle corresponds to 7 l/min gas flow
