Riland ARC 250CT, User Manual

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11
L1
L2
Ground cable
Earth clamp
Electrode holder
Workpiece
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. 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.
3. 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.
4. 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.
The images shown here are indicative only. The actual product may differ.