15
Operation
ATTENTION:
The protection class of MIG/MAG 250 series Gas Shielded Inverter Arc Welder
is IP21S. It is forbidden to put in a finger or insert a round bar less than 12.5 mm (metal bar in particular)
into the welder. No heavy force can be employed on the welder.
* The ‘protection indicator light’ will be on after a long time operation, it shows that the inner
temperature is over the permitted data, then the machine should be stopped using for some time to
let it cool down. It can continue using after the ‘protection indicator light’ is off.
* The power source should be switched off after the operation or while temporarily leaving job site.
* Welders should dress canvas work cloth and wear welding mask to prevent the hurt from arc and
thermal radiation.
* Light separating screen should be put in the job site.
* Inflammable or explosive materials are prohibited to access the job site.
* Each connection of the welder should be connected correctly.
Basic Welding Procedure
a) Connect Mig torch, Gas hose, welding wire and connect the power source switch【Power
Indicator Light】; fan is working now.
b) Unscrew the gas flowmeter, the barometer will indicate the pressure.
c) Press the switch of the torch, and the wire will come out form the torch.
REMARKS
* Only until the slag cools off and becomes hardened can the removal work starts.
* To avoid the slag injuring people, never point at the nearby people when you remove slag.
Material
Thickness
mm
Wire
Diameter
mm
Liner Inside
Diameter
mm
Wire feeding
tube
Spec mm
Amperage
A
Voltage
V
Gas Flow
L/min
0.8～1.5
Φ0.8
Φ1.4
1.2×1.6
(Blue liner)
50～90
17～18
6
1.0～2.5
Φ0.8
Φ1.4
1.2×1.6
(Blue liner)
60～100
18～19
7
2.5～4.0
Φ0.8
Φ1.4
1.2×1.6
(Blue liner)
100～140
21～24
8
2.0～5.0
Φ1.0
Φ1.6
1.2×1.6
(Black liner)
70～120
19～21
9
5.0～10
Φ1.0
Φ1.6
1.2×1.8
(Black liner)
120～170
23～26
10
5.0～8.0
Φ1.2
Φ1.6
1.2×1.8
(Black liner)
110～180
22～24
10
8.0～12
Φ1.2
Φ1.6
1.2×1.8
(Black liner)
160～300
25～38
12
