Punair ARC 250 MAX User manual

Smart Welder-MMA Series
1
ARC250MAX
Top Features
 High current range of 260 amps provides the ability to weld with up to 4.0 mm electrodes
 Convenient operational interface with LED display
 Small body,high energy,muti-boards,full bridge technology
 Adjustable hot start,arc force and VRD function
 Automatically matching welding parameters
 Convenient operational interface with digital meter
 Overheat,over-current and over-voltage detection,anti-shock and anti-sticking functions
 Built to IP21 classification to ensure reliability in harsh and demanding environmental
conditions
 Suitable for welding with extended cables up to 100M
Technical
Parameters
Technical
Parameters
Input Power
380V(±15%)/3Ph/50HZ/60HZ
Efficiency (%)
85
Rated input current (A)
16
Power factor
0.93
No-load voltage (V)
60
Insulation grade
F
Rated Output Current /Voltage/Duty Cycle
30-260A/30.4V/40%
Housing protection grade
IP21
Force adjusting range (A)
1-10
Net Weight (Kg)
6.6
Hot Start（A）
1-100
Dimensions H×W×D (mm)
350 x 159 x 300
No-load loss (W)
40

Smart Welder-MMA Series
2
ACCESSORY DRAWING
Electrode holder with cable Earth clamp with cable Connector assembly way Internal hexagonal wrench
Function description
1
LED display
4
Negative output
2
Current adjustment knob
5
Grounding bolt
Press to switch functions
6
Power switch
3
Positive output
7
Input power cable

Smart Welder-MMA Series
3
INSTALLATION INSTRUCTION
If the connecting cable is too long, it will have a great influence on the arcing performance as well as the stability of the welding performance.
Therefore,please use the recommended length.If you want to reduce the voltage drop, please use a cable with a larger cross section.
1) Ground the cables with section area no less than 6mm2to the housing,the way is connecting screw in the back of the power source to ground device;
2) Connect the power cable to the distribution box with the corresponding voltage level of the welder . Do not connect the wrong voltage and ensure that
the fluctuation of the input voltage is within the allowable range;
3) Make sure that the input power cable, output electrode holder, and output earth clamp are reliably connected. For the output interface, refer to the
connection method below and tighten it clockwise;
4) Please pay attention to the connecting terminal, DC welding machine has two connecting ways:
positive connection and negative connection. Positive connection: connect the electrode holder with “-” terminal,while workpiece with the “+” terminal.
Negative connection: workpiece 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.