USER MANUAL - 5 - YF-43L A/0
INSTALLATION INSTRUCTION
The machine is equipped with power voltage compensation equipment. When the power voltage fluctuation is
between±15% of rated voltage, it still can work normally.
When the machine is used with long cables, in order to prevent voltage from going down, bigger section cable is
suggested. If the cable is too long, it may affect the performance of the power system. So cables of configured length are
suggested.
1. Make sure the intake of the machine is not blocked or covered to avoid malfunction of cooling system.
2. Ground the cables with section area no less than 6mm
2
to the housing, the way is connecting screw in the back of
the power source to ground device .
3. Correctly connect the arc torch or holder according to the sketch. Make sure the cable, holder and fastening plug have been
connected with the ground. Put the fastening plug into the fastening socket at the “-” terminal and fasten it clockwise.
4. Put the fastening plug of the cable to fastening socket of “+” terminal at
the front panel, fasten it clockwise, and the earth clamp at the other
terminal clamps the work piece.
5. Please pay attention to the connecting terminal, DC welding
machine has two connecting ways: positive connection and
negative connection. Positive connection: holder connects with
“-” terminal, while work piece with the “+” terminal. Negative
connection: work piece with the“-” terminal, holder with the “+”
terminal. Choose suitable way according to the working situation.
If unsuitable choice is made, it will cause unstable arc, more
spatters and conglutination. If such problems occur, please
change the polarity of the fastening plug.
6. According to input voltage grade, connect power cable with
power supply box of relevant voltage grade. Make sure no
mistake is made and make sure the voltage difference is among
permission range. After the above job, installation is finished and welding is available.
If distance of work piece and machine is too far (50-100m), and the cables
(torch cable and earth cable) are too long, please choose cable of bigger
section to minimize the reduction of the voltage.
Power supply
Single phase~AC220V
Earth clamp
Electrode holder
Workpiece
Connect to
ground
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