17
INITIAL INSTRUCTIONS
All "parameters" are set by the use of only one
control knob. These parameters include current,
pulse time, slope-up time, etc.
This control knob is positioned below a digital
display which shows the value of the parameter
being set. The unit of measurement of the para-
meter is shown at the right hand side of the digital
display.
As above, selection of a function, e.g. HF-TIG or
LIFTIG, is by means of the keypad in the relevant
section. The function selected is indicated by a
bright indication light.
Storage of parameters
The machine memorises all settings when the mains
input voltage is switced off, thus ensuring that the
same machine settings are available when the
machine is switched on again.
The exact adjustments in the two welding processes
(MMA electrode and TIG) are stored as well, so
that shifting from one welding process to another
does not require a new current setting.
Setting of the machine
The following describes in detail the operation of the
machine.
Welding current
On pressing this keypad the control knob can
be used to set the welding current unless however
that, the machine has been set to external
adjustment. After the welding process has stopped,
the adjusted current is shown on the display, during
welding, however, the actual welding current is
shown.
During pulse welding an average welding current is
automatically shown when shifting between welding
current and base current becomes faster than
possible viewing.
Setting of welding jobs
This function enables storage of often used
machine settings and shift from one complete
setting to another. By pressing the keypad the
display shows a "P" and a number: "1", "2" etc.
Each number is a setting of all parameters and
functions of the machine. It is therefore possible to
have one setting for each welding job for which the
machine is used. The control knob is used for
shifting between these settings. During shifting it is
possible to see both process and the other on/off-
functions in each setting. Change of setting is not
possible during the welding process. The setting
selected is effected by releasing the keypad.
Welding voltage
The welding voltage indicator is illuminated for
reasons of safety and in order to show if there is
voltage on the electrode or the TIG torch.
Units of measurement of the parameter
Units of measurement of the parameter
shown in the digital display.
Overheating
The overheating indicator is illuminated if weld-
ing is interrupted due to overheating of the machine.
The indicator remains illuminated 5 seconds after
the overheating error is removed. Please read
chapter conc. "fault indification".
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