ESAB Heliarc 281iAC/DC, Руководство по эксплуатации

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section 5 operation
controls & operation (con't.)
2.3 Momentarily press the Remote Control mode key. The REM. ON LED will light and the L.H. display will flash
"REM". Whilst the display is flashing set the minimum/start value of the remote control as required between
4A and 100A using the Main Setting Control and R.H. display.
note:
If the remote minimum/start current value of the remote control is set higher than the main welding
current the arc will strike at the main welding current setting and no remote variation will be possible.
2.4 To quickly check or readjust the start current value momentarily press the Remote Control key.
2.5 To revert to local control mode, whilst the display is at standby, press and hold the Remote Control mode key
until the “REM ON” LED goes out.
3. tig arc initiation
3.1 Pressing the HF ON key selects HF start mode and the associated LED illuminates for confirmation. Pressing
the key again selects Lift-arc mode (the LED off). For DC TIG welding either HF or Lift-arc strike modes can
be used, but HF should be used for AC TIG to prevent contamination of the tungsten.
3.2 Once the arc is established, in either AC or DC TIG, the HF is automatically turned off. HF is also disabled for
MMA operation.
4. ac or Dc process selection
4.1 With the display in standby mode press the AC MODE key. The green ON AC light will illuminate and the dig-
ital displays will flash with the L.H. showing "Bal"(short for Balance) and the R.H. "Fre"(short for Frequency).
Whilst the displays flash, the AC Balance level can be preset using the lower "B" control knob between 10%
and 90% in the L.H. display. Also the AC Frequency can be adjusted from 20-200Hz as required using the
upper "F" control knob and the R.H. display.
Note the percentage balance refers to the negative "melting effect" of the arc so a lower balance % will
provide more cleaning action.
4.2 The AC Balance and AC Frequency settings can be adjusted whilst welding if required. To check the actual
values in use momentarily press the AC MODE key and the settings are shown in the L. H. and R.H. displays.
4.3 To revert to DC process, at standby press and hold the AC MODE key until the ON AC indicator LED turns off
(2-3 seconds).