supply. Pleas improve surroundings and avoid these problems.
Arc starting difficulty. Arc interruption happens easily:
Examine whether grounding wire clamp contacts with the work pieces well.
Examine whether each joint has improper contact.
The output current fails to reach rated value:
The deviation of power voltage from rated value may cause that the output current does no accord with adjusted value.
When the power voltage is lower than rated value, the maximum output current may be lower than rated value.
The current can not keep stable during operation:
This situation may relate to the following factors:
The voltage of electric power network changes;
Serious interference from electric power network or other electric facilities.
6 Attention
The safety notes listed in this manual is to ensure correct use of the machine and to keep you and other people from being
hurt.
The design and manufacture of cutting machine considers safety. Please refer to the safety warning listed in the manual to
avoid accidents.
Different damage would be caused by wrong operation of the equipment as follows. Please read the user manual carefully
to reduce such damage.
6.1 Cutting environment and safety
Working surroundings
(1) Cutting should be carried out in dry surroundings. The air humidity level should not be higher than 90%.
(2) The temperature should be between -10C to 40C.
(3) Don’t use the cutting machines in sunshine or rain. Keep it off water.
(4) Don't use the machines in the places of dust or corrosive air.
(5) Cutter machine should not be carried out in places with quick air flow.
Safety norms
Protection circuit of over-voltage, over-current and over-heat circuits are designed in the cutting machines. It will stop
working automatically when the input voltage, output current or internal temperature exceed the rated value. But if the
machines are excessively used, such as with input voltage higher than the rated, the machine might be damage. Please
pay close attention to the following matters.
Keep good ventilation!
！
The cutting machines work with high cutting voltage. Nature air flow can’t reach the requirement of heat dissipation. So
the fans are installed as cooling system to ensure stable performance.
Make sure the ventilation windows are not covered or blocked. The distance between the machines and things around
should not be less than 0.3m. Good ventilation is good for cutting performance and operational life.
Never over load!
Check the maximum rated current (according to the Duty Cycle chosen). Make sure the cutting current is never higher
than the rated value. Over current running will obviously shorten the operation life, even damage the machine.
Never over voltage!
The Input Voltage could be found in Technical data diagram. The auto-compensation function will keep the cutting current
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