User Manual
Version 1.0 of 22.04.2021
FANMIG 280-4N Minor
320-4N Minor
-15-
8. Welding
For an approximate setting of the correct welding current, use the following empirical formula =
14 + 0,05 x I2.
After turning the device on with main switch
V1
(see Fig. 1) and setting the gas shield flow
(see 6.5) and wire (see 6.4) you can proceed with setting the welding current. Welding voltage
(current) is set with
V2
and
V3
switches.
Use the knob
12
to set the wire feed speed (see Fig. 2). Welding arc should be stable and pro
-
duce minimal amount of spatter. Use button
3
to set following available welding modes:
Button 4 - 2-cycle continuous welding
Button 10 - 4-cycle continuous welding
Buttons 4 and 11
(LED is on) - 2-cycle spot welding
Buttons 4 and 11
(LED blinks) - 2-cycle intermittent welding
Buttons 10 and 11
(LED is on) - 4-cycle spot welding
Buttons 10 and 11
(LED blinks) - 4-cycle spot welding
In order to set the spot or intermittent welding, press and hold button
3
for longer than 2 se-
conds. A choice between 2- and 4-cycle when constant welding is made by pressing button
3
.
Wire
diameter
[mm]
Wire
feeding
speed
[m/min]
Max.
feeding
speed
[m/min]
Weight
of 1 m
of wire
[g]
Wire
consumption
per minute for
maximum feed
speed
[g/min]
Wire consumption
per hour for the
maximum feed
speed
[g/h]
Solid steel wire
0,6
2 - 5
5
2,3
11,5
690
0,8
3 - 6
6
4
24
1440
1,0
3 - 12
12
6
72
4320
1,2
4 -18
18
9
162
9720
Stainless steel wire
0,6
2 - 5
5
2,3
11,5
690
0,8
3 - 6
6
4
24
1440
1,0
3 - 12
12
6
72
4320
1,2
4 -18
18
9
162
9720
Aluminium wire
0,6
2 - 5
5
0,8
4
240
0,8
3 - 6
6
1,3
7,8
468
1,0
3 - 12
12
2
24
1440
1,2
4 -18
18
3
54
3240
Table 5: Approximate wire and gas consumption for MIG / MAG welding.
Wire diameter
[mm]
Recommended gas flow
[l/min]
Gas consumption per hour of welding
[l/h]
(recommended gas flow * 60 minutes)
0,6
6
6 * 60 = 360
0,8
8
8 * 60 = 480
1,0
10
10 * 60 = 600
1,2
12
12 * 60 = 720
1,6
16
16 * 60 = 960
