Design and function
MIG/MAG welding
099-005401-EW501
17.06.2014
5.7 MIG/MAG welding
5.7.1 Welding torch connection
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”).
Fault with the wire guide!
On delivery, the central connector is fitted with a capillary tube for welding torches with
spiral guides. Conversion is necessary if a welding torch with a plastic core is used!
Welding torch with plastic core:
• use with guide tube!
Welding torch with spiral guide:
• use with capillary tube!
Depending on the wire electrode diameter or type, either a steel liner or plastic liner with the
correct inner diameter must be inserted in the torch!
Recommendation:
• Use a steel liner when welding hard, unalloyed wire electrodes (steel).
• Use a chrome nickel liner when welding hard, high-alloy wire electrodes (CrNi).
• Use a plastic core to weld or braze soft wire electrodes, high-alloy wire electrodes or aluminium
materials.
Preparation for connecting welding torches with a spiral guide:
• Check that the capillary tube is correctly positioned in relation to the central connector!
Figure 5-5
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