F. WELDING OPERATIONS
The welding operation can be adjusted from the front operation panel of the power
source and remote control unit.
Gas Supply:
To check the gas supply before welding, set the SHIELD GAS switch to CHECK
position. The shielding gas will start flowing. After confirmation, release the switch and
it will automatically return to WELD position.
Welding method:
Set the switch at CO
2
or Ar-CO
2
depending on the Shielding Gas used for GMA
welding.
Self hold:
When the Self hold / Crater switch is ON, the arc is produced while the torch switch is
ON and then the self hold is maintained even though the torch switch is turned OFF,
and the crater control condition will start functioning if the torch switch is triggered ‘ON’
for the second time.
Crater control function
An Arc Crater normally formed at the end of the welding can be filled without any
defect by adjusting the crater current and crater voltage knobs on the front panel of
the Power Source.
Remote Control unit
Adjust welding voltage and current from the Remote Control Unit as per following
guidelines:
a) Welding Current Adjustment:
Set the welding current by turning the current adjustment knob and adjust at
the proper graduated value of the current. However, for fine-tuning, set the
welding current from the ammeter in the front panel of the Power Source, by
generating an experimental Arc.
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