Fieldmann FDIS 20140-E, Manual

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EN
INVERTER WELDING MACHINE USER’S MANUAL
15
Faq and solutions | Maintenance
7. FAQ AND SOLUTIONS
Fittings, welding materials, environment factor, supply powers maybe have something to do with welding. User
must try to improve welding environment.
A. Arc-striking is difficult and easy to pause
1. Make sure quality of tungsten 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 ected with the
positive polarity. So please change the polarity.
B. Output current not to rated value:
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.
C. Current is not stabilizing when machine is been operating:
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
D. Too much spatter when use MMA welding,
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
techniques, which means that the stick should be connected with the negative polarity of power source,
and work piece should be conn.
8. MAINTENANCE
1. Remove dust by dry and clean compressed air regularly, if welding machine is operating in environment
where is polluted with smokes and pollution air, the machine need remove dust every month.
2. Pressure of compressed air must be within the reasonable range in order to prevent damaging to small
components of inner-machine.
3. Check internal circuit of welding machine regularly and make sure the circuit connections are connected
correctly and tightly (especially plug-in connector and components). If scale and rust are found, please clean
it, and connect again tightly.
4. Prevent water and steam from entering into the machine. If that happens, please blow it dry and check
insulation of machine.
5. If welding machine will not be used for long time, it must be put into the packing box and stored in dry and
clean environment.