The welding machine must be inspected by professionals at regular time (not exceed 6 months). The contents
as follow:
* Whether the electronic components are loosed or not and dust removal must be conducted.
* Whether the panel mounted on the device should be able to guarantee the normal implementation of the
machine.
* Whether the input cables are damaged or not. If yes, safe handling must done.
Warning!
Disconnect the power source before servicing it. Contact with the manufacturer or agent immediately to
acquire the service and support skills when users do not have the ability to repair it.
Environment
* Working temperature: -10℃~40℃.
* Transportation and storage: -25℃~55℃.
* Relative air humidity: 40℃≤50%; 20℃≤90%.
* The dust, acids, corrosive gases and substance in the ambient air must be lower normal level except those
from welding process.
* Altitude must be less than 1km.
* Keep good ventilation at a distance of 50cm around.
* Put it in somewhere the speed of wind not less than 1m/s.
Input Power
* Power supply waveform should be sine wave and frequency fluctuations with less than +-1% of its rating.
* The fluctuations of input voltage must be lower than +-10% of the rated value.
Equipment Principle
NOTES: This is inverter technology. The main part as follow:
Rectifier Filter IGBT Transformer Rectifier Choke
Equipment Structure
The ECN Inverter DC MMA Welder uses portable cabinet structure: the upper part of front panel has been
equipped with welding current adjustment knob, power indicator (green), abnormal indicator (yellow). The
output terminal is fitted with quick connector both “+” and “-”. The back panel owns power switch, motor
fan, input power cable. The inside body of the machine includes PCB main board, electronic components,
radiator etc.
Standard
* EN 60974-1: Arc Welding Machine Standards
* JB / T 7824: Technical Conditions of Inverter Arc Welding Rectifier
* GB 4208: Protection Class (IP Code)
