CANAWELD PLB2380148, User Manual

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19
Short circuit protect function
：
○ 1 TIG /DC/LIFT ：
If the tungesten electrode touches the workpiece when welding, the current will drop to 20A, which
can reduce the tungsten spoilage farthestly
，
prolong the using life of the tungsten electrode
，
and prevent tungsten
clipping.
○ 2 TIG /DC/HF ：
If the tungesten electrode touches the workpiece when welding, the current will drop to 0 within 1s,
which can reduce the tungsten spoilage farthestly
，
prolong the using life of the tungsten electrode
，
and prevent
tungsten clipping.
○
3 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
④
TIG
：
If the TIG torch is pressed quickly, the welding current will drop a half, then if the TIG torch is pressed quickly
again, the welding current will get back.
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.
Note: When select AC output, the current and the wave form are as same as the above, but output polarity
changes alternately.