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t3～t4： The output current slopes down to minimum current (5A), stop arc; adjustment
range of down slope time: 0~5S;
t4～t5： Post flow time, adjustment range of post flow time: 0.1～10.0S;
t5：
Electromagnetic valve is closed and stop argon flowing. Welding is finished.
Short circuit protect function：
TIG /DC/LIFT：If the tungesten electrode touches the workpiece when welding, the current will
drop to 30A, which can reduce the tungsten spoilage farthestly，prolong the using life of the
tungsten electrode，and prevent tungsten clipping.
TIG /DC/HF： If the tungesten electrode touches the workpiece when welding, the current will drop
to 0 within 1s, which can reduce tungsten spoilage,prolong the using life of the tungsten
electrode，and prevent tungsten clipping.
MMA operation： if the electrode touches workpiece over two seconds, the welding current will
drop to the 0 automatically to protect the electrode.
Prevent arc-break function：TIG operation， Avoid arc-break with special means, even if arc-break
occurs the HF will keep the arc stable.
Notices:
Check the condition of welding and connection units firstly, otherwise there will be
malfunction such as ignition spark、gas leakage、out of control and so on.
Check that whether there is enough Argon gas in the shield gas cylinder, you can test the
electromagnetic gas valve through the switch on the front panel.
Do not let the torch aim at your hand or else of your body. When you press the torch switch,
the arc is ignited with a high-frequency, high-voltage spark, and the ignition spark can cause
interferences in equipment.
The flow rate is set according to the welding power used in the job. Turn the regulation screw
to adjust the gas flow which is shown on the gas hose pressure meter or the gas bottle
pressure meter.
● The spark ignition works better if you keep the 3mm distance from the workpiece to the
tungsten electrode during the ignition.
MAINTENANCE &TROUBLESHOOTING
26
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