Tweco 200i Multi Process Welding Inverter - Manual (Page 27)

TRANSMIG 200i
Manual 0-5209 3-9 INSTALLATION, OPERATION AND SETUP
14. Digital Voltage Meter (Right Digital Display)
MIG Mode
This digital meter is used to display the pre-set (preview) Voltage in MIG mode and actual welding voltage
of the power source when welding. At times of non-welding, the digital meter will display a pre-set (preview)
value of Voltage. This value can be adjusted by varying the Multifunction Control Knob (10).
STICK and LIFT TIG Modes
This digital meter is used to display the Welding Output Terminal Voltage in STICK / LIFT TIG modes during
non-welding or welding. This value cannot be adjusted by varying the Multifunction Control Knob (10).
When welding, this digital meter will display actual welding voltage in all modes.
At the completion of welding, the digital 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 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 (ie dip versus spray transfer). Where exact
settings are required (in the case of procedural work), it is recommended that alternate measurement
methods be utilised to ensure output values are accurate.
15. Thermal Overload 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. Should the thermal overload 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 mains power switch should remain
in the on position such that the fan continues to operate thus allowing the unit to cool sufficiently. Do not
switch the unit off should a thermal overload condition be present.
16. Gas Inlet (MIG mode only)
The Gas Inlet connection is used to supply the appropriate MIG welding gas to the unit. Refer to section
3.15 set up details.
!
WARNING
Only Inert Shielding Gases specifically designed for welding applications should be used.