BMK-8 U /
BMK-12 W
26
5.2
Adjustment of operation modes
5.2.1
Starting the stud welder
After switching the stud welder on, the 8 LED lamps (items 5.1 - 5.8, chapter 5.1.2) light up for a short
period. The stud welder carries out a self test which is shown on the LCD display (item 4, chapter 5.1).
The stud welder is locked during the self test and it is impossible to operate it or to enter data.
After the self test has been carried out successfully, the stud welder automatically sets the parameters
which were last set.
5.2.2
Operation modes / parameters
Press the function key "arrow right" or "arrow left"
(3 or 4)
to select the parameters. Only the
parameter designation which is flashing on the display can be set by means of the function keys
(1 or 2)
.
The four different operating modes which may be set are also listed in chapter 5.1.3.
5.2.2.1
Operating mode "OP" (operating state)
The operating mode "OP" allows normal welding operation with the welding parameters set.
In the case of an excessive welding sequence, the welding operation is temporarily interrupted to
avoid overheating of the stud welder.
• Use the function key "arrow up" or "arrow down"
(1 or 2)
to set operating mode "OP".
5.2.2.2
Operation mode "PRE" (preweld current test)
The adjustment "PRE" (preweld current test) enables you to carry out welds by means of the set
parameters without application of main current and serves to control the gun or head adjustment and
to test performance. During this operation mode, an arc is generated with low current when the gun or
welding head is positioned on the closed circuit (workpiece connected with earth) and the gun switch
is pressed (or when a signal is given via the interface). This is helpful to check the symmetry of the arc
or whether preweld current is flowing.