ARCCAPTAIN MIG250 - Installation and Connection; Selecting the Welding Wire

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 Output characteristics
4. INSTALLATION AND CONNECTION
! WARINING BEWARE OF ELECTRIC SHOCK!
Check and follow the instructions listed in the “Safety” section of this manual.
!
WARINING DO NOT set up without SWITCH OFF !
4.1 Selecting the Welding Wire
This welder is compatible with 2lb or 10lb spools of 0.023", 0.030", 0.035", or 0.040" MIG
wire. Using thicker wire will not improve welding performance on thicker materials, nor will it
increase deposition rate. Additionally, it may strain your AC power source.
 Matching table of relation between welding wire, diameter, shielding gas, material
and wire feeding roll：
In synergic mode, different welding wire, diameter, shielding gas, material and wire feeding roll have
corresponding matching relationship as below table. Please select correct settings to achieve optimal
welding performance.
Function
Item
Fe CO
2
Fe MIX Flux CrNi AlMg
MATERIAL
STEEL STEEL FLUX CORED STAINLESS ALUMINIUM
WIRE TYPE ER70S-6 ER70S-6 E71T-GS ER308 ER5356
DRIVE ROLLER
V GROOVE V GROOVE KNURLED V GROOVE U GROOVE
POLARITY DCEP DCEP DCEN DCEP DCEP
GAS TYPE
100%CO
2
20%CO
2
+80%Ar NO GAS 2%CO
2
+98%Ar 100%Ar
NOTE: Oxidized welding wire can affect welding results.
If you find rust on a wire spool, it's best to throw it away. But before you do, unwind a bit of
Line Characteristics
External characteristic curve of max output
External characteristiccurve of mini output
Rated load relationship
Graph of output characteristic
Figure 10
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