BMK-8 U /
BMK-12 W
28
• Press the trigger of the gun or the welding head or give a triggering signal via the CNC interface. The
stud is lifted off the workpiece as long as the triggering signal is there. After a maximum of 4 seconds,
however, the lift test will be interrupted to protect the magnet. There is no welding current during this
period of time.
• If necessary, check and correct the height of lift according to the prescribed standard values for the
welding gun or welding head (please refer to the table for welding parameters in chapter 6.2).
R
If the lift test is carried out on a workpiece which is connected to the earth connection of the stud
welder, the drop time will be shown in milliseconds on the display. If the workpiece is not connected to
the earth connection, "no ground" appears on the display.
Do not activate the release too often in short intervals, as this would cause the thermo
safety mechanism protecting the lifting magnet to react and the current supply for the
magnet to be interrupted. This condition is displayed as follows:
5.2.2.4
Operation mode "GAS" (gas test)
This operation mode checks whether the shielding gas flows through the gas shroud of the welding
gun or welding head. As long as a triggering signal is there, shielding gas flows out of the gas shroud
on the welding gun or welding head. This enables you to rinse the gas lines with shielding gas before
starting to weld.
• Select the operation mode "GAS" with the function key "arrow up" or "arrow down"
(1 or 2)
.
• Connect gas supply
• The gas valve may be activated by
- the trigger of the welding gun or welding head
- an active start signal at the CNC interface