5 OPERATION
0463 815 001 - 23 - © ESAB AB 2021
1. Spool gun indicator
When the correct ESAB Spool-Gun* is connected, the LED will illuminate. (*Optional Accessory).
2. Thermal overload indicator (fault indicator)
This welding power source is protected by a self resetting thermostat. The LED indicator will
illuminate if the duty cycle of the power source has been exceeded. Should the thermal
overload indicator illuminate the output of the power source will be disabled. Once the power
source cools down, the LED will turn OFF and the over temperature condition will
automatically reset. Note that the mains power switch should remain in ON position such that
the fan continues to operate thus allowing the unit to cool sufficiently. Do not switch the unit
OFF during an overload condition.
3. Digital Wire Feed Speed (WFS) and Welding Amperage (A) (Right side LED display)
MIG mode
This digital meter is used to display the pre-set (preview) wire feed speed in IPM (inches per
minute) in MIG mode and actual welding amperage of the power source when welding.
During non-welding, the digital meter will display a pre-set (preview) value of wire feed speed.
This value can be adjusted by varying the Wire feed speed control knob (4).
MMA and LIFT TIG modes
The digital meter is used to display the pre-set (preview) amperage in MMA / LIFT TIG modes
and actual welding amperage of the power source when welding. At times of non-welding, the
amperage meter will display a pre-set (preview) value in both MMA and LIFT TIG modes.
This value can be adjusted by varying the amperage control knob (4).
When welding, this digital meter will display actual welding amperage in all modes. At the
completion of welding, the digital meter will hold the last recorded amperage value for a
period of approximately 10 seconds in all modes. The amperage meter will hold the value
until; (1) any of the front panel controls are adjusted in which case the unit will revert to
preview mode, (2) welding is recommenced, in which case actual welding amperage will be
displayed, or (3) a period of 10 seconds elapses following the completion of welding in which
case the unit will return to preview mode.
NOTE!
The preview functionality provided on this power source is intended to act as a
guide only. Some differences may be observed between preview values and
actual welding values due to factors including the mode of welding, differences
in consumables/gas mixtures, individual welding techniques and the transfer
mode of the welding arc (dip versus spray transfer). Where exact settings are
required (in the case of procedural work), it is recommended that alternate
measurement methods be utilized to ensure output values are accurate.
3.1 Wire speed indicator
The wire speed indicator illuminates when MIG mode is selected to identify that the digital
wire speed/amperage meter is previewing wire speed in IPM (inches per minute).
The wire speed indicator extinguishes when the user is MIG (GMAW/FCAW) welding or
depressing the MIG gun trigger and the digital wire speed/amperage meter displays actual
welding amperage of the power source.
4. Wire speed/amperage control
In MIG mode, the wire speed/amperage control knob adjusts the speed of the wire feed motor
(which in turn adjusts the output current by varying the amount of MIG wire delivered to the
welding arc). The optimum wire speed depends upon the material type and the welding
application. The setup chart on the inside of the wire feed compartment door provides a brief
summary of the required settings for a basic range of MIG (GMAW/ FCAW) welding
applications.
In MMA and LIFT TIG modes, the wire speed/amperage control knob adjusts the amount of
amperage (weld current) delivered to the welding arc by the power source. It directly adjusts
the power source to deliver the desired level of weld current.
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