Installation Of Wire Reel - Weldtronic TM250C Operating Manual

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After being installed according as above, and the power switch on the back panel being switched
on, the machine is started. At this time, the ammeter displays the preset wire feed speed value,
and the voltmeter displays the preset voltage value. Open the cylinder valve, and switch the gas
check switch to the "GAS CHECK" position. Adjust the gas regulator to get the correct gas flow.
After setting, switch the gas check switch to the "Welding" position.
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Before starting the welding it is recommended to make tests and trial runs on scrap material.
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The actual current and voltage values are displayed on the front panel of the machine. When the
torch trigger is released, welding ends. 2 seconds after welding ends, the gas supply will be cut
off.
Gas less Self Shielded Welding
Insert the welding torch into the "Euro connector for torch in MIG" output socket on the front panel of the
machine, and tighten it.

Installation of wire reel

Open the side cover and unscrew reel brake cover. Mount the reel in such way that one
end of wire hangs downwards. Mount brake cover back in position.
Cut off the bent end of the wire. Lead the end of the wire trough inlet guide and unclip
pressure handle of feed rollers in order to make the work easier. Ensure both wire inlet
guide and the feeding rollers groove are aligned. Push the welding wire to the inlet of the
torch connection. Replace the pressure handle to re-establish pressure on the wire. If
handle pressure is too strong the wire could be transformed - flattened. If the pressure is
too low the wire could slip in the feeding groove. Use tension knob to adjust this.
Gas selection for Gas Metal Arc Welding (GMAW)
Metal inert gas welding (MIG): Uses Argon (Ar), Helium (He) or Ar-He mixtures as the shield gas, and it
mainly used for welding aluminum and its alloys.
Metal active gas welding (MAG): Uses Argon (Ar) mixed with a certain amount of CO2 / O2 as the shield
gas, and it usually used in short circuit transfer and spray transfer. It can be applicable to flat position
welding, vertical position welding, overhead position welding and all-position welding, and it mainly used
for welding carbon steel, high strength low alloy steel and stainless steel. Welding robots mostly use the
MAG process.
CO2 (carbon dioxide) gas shielded arc welding (CO2 welding): It uses CO2 as the shield gas, and is usually
used in globular transfer and short circuit transfer to implement welding. It can be used to weld in
different positions. As compared with other welding methods, CO2 welding has many advantages, though
it produces more spatters, CO2 welding is widely used for general metal structure welding.
The correct shielding gas can alter productivity in GMAW by contributing to.
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Correct weld sizes, to reduce over welding
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Lower spatter levels, to increase welding speed and reduce clean-up
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Reduced welding defects which reduces rework time
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Reduced fume levels, to improve OH&S and worker comfort, increases productivity
TitanMig AU 250C Manual_ Issue A 0415
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