2
SAFETY
• In some areas, there is no severe vibration.
• Make sure no interference will be caused to
the surrounding in the welding area.
• Whether the power supply capacity is sufficient to allow
the welder to work normally or not. And a safety
protection device should be equipped in the input power.
• Prevent it from dumping if the welder is put in the place
of over 10°incline.
Security Check
The following items must be checked up by the operator each
time before access to the power source.
• Make sure the power socket is reliably grounded.
• Make sure the output terminals are well connected
without short circuit.
• Make sure output and input cables are perfect with
no exposure.
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.
WARNING
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.
TECHNICAL DESCRIPTION
Environment
• Working temperature: -10ºC ~ 40ºC
• Transportation and storage: -25ºC ~ 55ºC
• Relative air humidity: 40º C≤50%; 20º C≤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
AC-50/60 Hz
High voltage
Low amperage
DC-Rippled
High voltage
Low amperage
AC-20,000 Hz
Low voltage
High amperage
DC-Rippled
Low voltage
High amperage
DC-Smooth
High voltage
Low amperage
AC-20,000 Hz
High voltage
Low amperage
DC-Smooth
Low voltage
High amperage
NOTES: This is inverter technology. The main part as follow:
Rectifier Filter IGBT Transformer Rectifier Choke
Equipment Structure
Working The MMA 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.
Parameter
Standard
• EN 60974-1: Arc Welding Machine Standards
• JB / T 7824: Technical Conditions of Inverter
Arc Welding Rectifier
• GB 4208: Protection Class (IP Code)
Symbol Chart
Note that only some of these
symbols will appear on your model.
A
V
3
On
Off
Dangerous
voltage
Increase / Decrease
AC auxiliary
power
Fuse
Amperage
Voltage
Thee phase
SMAW
GTAW
Wire feed
function
Hz
f
+
1
X
Hertz
(cycles / sec)
Direct current
(DC)
High
Temperature
Welding gun
Positive earth
Frequency
Negative
Positive
Line
Single phase
Duty cycle
GMAW
