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C-3
See the following procedure for setting the Wire
Speed Feed using the Magnum SG Spool Gun:
To determine spool gun wire feed speed use a hand
tachometer, or calculate the speed using the following
equation:
IPM= Length of wire fed (inches) x 60
Time fed (seconds)
4. To return to normal POWER MIG
®
256 welding,
release the spool gun trigger and reset feeder gun
welding procedures.
4. The following procedure settings for Aluminum
4043 can be used as initial settings for making test
welds to determine final settings:
5. To return to normal POWER MIG
®
256 welding,
release the spool gun trigger and reset feeder gun
voltage procedure setting if necessary.
MAKING A WELD WITH THE
MAGNUM SG SPOOL GUN
The POWER MIG
®
256 control circuitry is designed to
sense either the spool gun or (built in) wire feeder
trigger circuitry. The spool gun can easily be plugged
in and will be ready to use.
Closing either gun trigger will cause the electrode
of both guns to be electrically "HOT". Be sure
unused gun is positioned so electrode or tip will
not contact metal case or other metal common to
work.
1. Pulling the trigger for the built-in feeder gun:
• Disables spool gun operation.
• Closing feeder gun trigger starts feeder gun
welding and makes both electrodes electrically
"HOT".
2. Pulling SPOOL GUN Trigger:
• Disables built-in feeder gun operation.
• Closing spool gun trigger starts spool gun weld-
ing and makes both electrodes electrically
"HOT".
3. Operation with POWER MIG
®
256:
• Turn the POWER MIG
®
256 input power ON.
• Adjusting the voltage control will increase or
decrease your welding voltage.
• Adjusting the wire speed control on the spool gun
will increase or decrease the spool gun wire feed
speed.
• For the Magnum SG Spool Gun, the wire feed
speed is controlled by combination of the wire
feed speed displayed on the POWER MIG
®
256
and the wire speed control on the spool gun.
POWER MIG
®
256
ACCESSORIES
Wire Diameter
In. (mm)
.030” (.8mm)
.035” (.9mm)
3/64” (1.2mm)
Wire Feed Speed
Display
270
250
240
Arc voltage
Setting
15V
16V
20V
CAUTION
Wire Feed Speed
Display
50
300
700
SG Spool Gun Wire Feed Speed
Approximate Range
50-200
200-400
300-600