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5.0 Connections & Package contents
4.1
Power
The machine is designed to operate on a 240V ±15% input single phase
AC outlet. The machine is supplied with a heavy duty 15A input plug.
Ensure that there is adequate ventilation around the machine when it is
connected to the mains power supply.
4.2
Shielding gas
When working in TIG mode this welding process requires shielding gas.
The shielding gas can be supplied via a regulator to the machine from
either a fixed installation or single cylinder of gas.
If a cylinder of gas is used, please ensure that the cylinder is securely
fastened (refer to the section on cylinder handling and safety), before
starting any welding operation.
4.3
TIG torch connection
The Smootharc TIG 200 DC machine is rated at 200A at 60% duty cycle.
The matching TIG torch for this machine is the BOC AC/DC TIG
The BOC AC/DC TIG torch is fitted to the machine by means of the Safe
Lock dinse back end. For DC (-) TIG operation, fit the torch back end to
the negative dinse connection. Similarly for DC (+), fit the torch back end
to the positive dinse connection.
The gas hose is fitted to the gas fitting (GAS) located on the front bottom
panel of the machine.
BOC Smootharc TIG 200 DC Operating Manual
4.4
MMA operation
The Smootharc TIG 200 DC can be used as an MMA welding machine by
fitting an electrode holder and work return lead to the respective dinse
connectors (dependent on the type of electrodes being used).
When using your Smootharc TIG 200 DC machine in MMA mode, ensure
that the TIG/MMA selector is switched to the MMA position.
4.5
TIG welding operation
The Smootharc TIG 200 DC is fitted with an option of High Frequency (HF)
start mode. The arc would be initiated by keeping a distance of 2–4 mm
between the workpiece and the tungsten. The HF will be initiated by
depressing the contactor switch. Once the arc is initiated, the HF will
automatically turn off.
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