Riland ARC 250CT, User Manual

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15
A. Arc-striking is difficult and easy to pause
B. Output current not to rated value
C. Current is not stabilizing when machine is being operated
D. Too much spatter
QUESTIONS TO BE RUN INTO DURING WELDING
Fittings, welding materials, environment factor, supply powers maybe have something to do with welding.
User must try to improve welding environment.
1. Make sure quality of electrode is high.
2. If the electrode is not dried, it will cause unstable arc, welding defect increases and the quality is down.
3. If use extra-long cable, the output voltage will decrease, so please shorten the cable
When power voltage departs from the rated value, it will make the output current not matched with rated
value; when voltage is lower than rated value, the max output may lower than rated value.
It has something with factors as following:
1. Electric wire net voltage has been changed.
2. There is harmful interference from electric wire net or other equipment
1.
Maybe current is too big and stick’s diameter is too small.
2. Output terminal polarity connection is wrong, it should apply the opposite polarity at the normal technics,
which means that the stick should be connected with the negative polarity of power source, and work
piece should be connected with the positive polarity. So please change the polarity.