Design and function
Transport and installation
099-005325-EW501
01.02.2017
27
1 Preparation
• Switch off the welding machine.
• Unscrew the gas nozzle from the welding torch.
• Trim the welding wire, so that it is flush with the contact tip.
• Retract the welding wire a little (approx. 50 mm) on the wire feeder. There should now be no more
welding wire in the contact tip.
2 Configuration
• Press the "welding parameter or choke effect" push-button while simultaneously switching on the
welding machine. Release push-button.
•
"Welding parameter" push-button on the M3.7x-A and M3.7x-C control.
•
"Choke effect" push-button on the M3.7x-B and M3.7x-D control.
• The required parameter can now be selected using the 'Welding parameter setting' rotary knob.
Parameter rL1 must be aligned for all machine combinations. In case of welding systems with a
second power circuit
– if two wire feeders are to be operated from a single power source, for example
– a second alignment with parameter rL2 must be performed.
3 Alignment/measurement
• Applying slight pressure, put the welding torch in place with the contact tip on a clean, purged location
on the workpiece and then press the torch trigger for approx. 2 seconds. A short-circuit current will
flow briefly, which is used to determine and display the cable resistance. The value can be between
0
mΩ and 40 mΩ. The new value is immediately saved without requiring further confirmation. If no
value is shown on the right-hand display, then measurement failed. The measurement must be
repeated.
4 Restoring welding standby mode
• Switch off the welding machine.
• Screw the gas nozzle onto the welding torch.
• Switch on the welding machine
• Insert the welding wire.
5.1.10 Shielding gas supply (shielding gas cylinder for welding machine)
WARNING
Risk of injury due to improper handling of shielding gas cylinders!
Improper handling and insufficient securing of shielding gas cylinders
can cause serious injuries!
• Place shielding gas cylinder into the designated holder and secure with
fastening elements (chain/belt)!
• Attach the fastening elements within the upper half of the shielding gas
cylinder!
• The fastening elements must tightly enclose the shielding gas cylinder!
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.
