Maintenance – Lincoln Electric IM408 MAGNUM SG SPOOL GUN User Manual
Page 20
MAINTENANCE
Safety Precautions
make wire drive rollers slip. Be careful when using
any of these liquids on spool gun.
After 500 hours operation or 24 months time,
whichever comes first, oil motor with light lubricating
oil. Apply oil to pressure roller bearing on the end of a
toothpick so oil will not contaminate drive surface of
wire drive rollers.
Procedure Settings
The following procedure settings for aluminum wire and argon gas can be used as starting points for developing
specific welding procedures:
When finished welding, be sure to turn power source
off and close valve on gas cylinder.
Routine Maintenance
NOTE: Oil and spray cleaners can contaminate
electrode wire and cause bad welds. They could also
Carefully clean gun with a cleaner that is safe for
plastic. Apply cleaner to rag and wipe gun. Do NOT
spray cleaner on gun. Keep cable clean. Oil, grease
gasoline, paint, and solvents degrade cable insulation.
Wire
Metal
Wire
Amps
Size
Thickness
Speed
DC
in. (mm)
ga.
in. (mm)
Arc Volts
ipm (mpm)
(+)
.030 (0.8)
22
.030 (0.8)
13-14
(1)
200 (5.1)
40
20
.036 (1.0)
13-14
(1)
240 (6.1)
40
18
.048 (1.2)
14-15
(1)
290 (7.4)
50
16
.060 (1.6)
15-16
(1)
340 (8.6)
60
14
.075 (2.0)
16-17
(1)
370 (9.4)
70
12
.105 (2.5)
16-18
(1)
430 (10.9)
90
10
.135 (3.5)
24-26
460 (11.7)
110
3/16
(5.0)
24-26
500 (12.7)
150
1/4
(6.0)
28-29
560 (14.2)
180
3/8
(10.0)
28-30
600 (15.2)
200
.035 (0.9)
22
.030 (0.8)
13-14
(1)
150 (3.8)
40
20
.036 (1.0)
13-14
(1)
175 (4.4)
40
18
.048 (1.2)
13-14
(1)
215 (5.5)
50
16
.060 (1.6)
14-16
(1)
250 (6.4)
60
14
.075 (2.0)
14-16
(1)
270 (6.9)
70
12
.105 (2.5)
16-18
(1)
320 (8.1)
90
10
.135 (3.5)
24-26
410 (10.4)
110
3/16
(5.0)
24-26
450 (11.4)
150
1/4
(6.0)
26-28
530 (13.5)
180
3/8
(10.0)
26-29
560 (14.2)
200
1/2
(12.0)
26-30
600 (15.2)
220
3/64 (1.2)
10
.135 (3.5)
20-21
(1)
180 (4.6)
110
3/16
(5.0)
20-21
(1)
220 (5.6)
150
1/4
(6.0)
27-28
250 (6.4)
180
3/8
(10.0)
25-30
260 (6.6)
200
1/2
(12.0)
25-31
270 (6.9)
220
3/4
(20.0)
25-31
290 (7.4)
250
(1)
Short arc transfer.
13