Tweco Fabricator 141i Operating Manual - Manual (Page 42)

Fabricator 141i
INSTALLATION, OPERATION AND SETUP 3-12 Manual 0-5145
13. Digital Voltage Meter (Right Digital Display)
The digital voltage meter is used to display the both the preview voltage (MIG mode only) and actual output
voltage (all modes) of the Power Source.
At times of non-welding, the voltage meter will display a preview value in MIG mode. This value can be
adjusted by varying the multifunction control knob (Control No. 9). Note that in STICK and LIFT TIG modes,
the voltage meter will not preview welding voltage but will display Open Circuit Voltage in STICK mode and
0V in LIFT TIG mode.
When welding, the voltage meter will display actual welding voltage in all modes.
At the completion of welding, the digital voltage meter will hold the last recorded voltage value for a period of
approximately 10 seconds in all modes. The voltage meter will hold the value until; (1) any of the front panel
controls are adjusted in which case the Power Source 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 Power Source 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 (ie 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.
14. Fault Indicator
This welding Power Source is protected by a self resetting thermostat. The indicator will illuminate if the duty
cycle of the Power Source has been exceeded or if a fault is detected in the Inverter. Should the Fault Indicator
illuminate the output of the Power Source will be disabled. Once the Power Source cools down this light will
go OFF and the over temperature condition will automatically reset. Note that the power switch should remain
in the on position such that the fan continues to operate thus allowing the Power Source to cool sufficiently.
Do not switch the Power Source off should a thermal overload condition be present. If the fault condition
does not extinguish, then the Power Supply will need to be taken to an authorized repair center for analysis.
15. Gas Inlet (MIG mode only for MIG Gun or Spool Gun operation)
The Gas Inlet connection is used to supply the appropriate MIG welding gas to the Power Source. Refer to
section 3.19 to 3.20 for MIG (FCAW/GMAW) set up details.
!
WARNING
Only Welding Shielding Gases specifically designed for arc welding applications should be used.
16. On / Off Switch
This switch is used to turn the Power Source on/off.
WARNING
When the front digital displays are lit, the machine is connected to the Mains supply voltage and the
internal electrical components are at Mains voltage potential.