Chicago Electric MIG-100 91124 - Manual (Page 7)

Page 7 SKU 91124
Caution: Before arc welding, read and understand all safety precautions and warnings
listed on pages 2 through 5.
1. Securely clamp the Ground Cable Clamp (33) as close as possible to the metal object
to be welded, or to the metal work bench where the object is mounted and electrically
connected.
2. This unit is not adjustable. Current switch is set at 90 AMPs.
3. Verify that the Power Switch is in the OFF position, then plug the MIG-100 Welder plug
into a dedicated, 110 VAC, 20 amp line with delayed action type circuit breaker or
fuses.
If an extension cord is used, it must have the following wire size: up to 30 feet, use 12
AWG size wire; 30 to 50 feet, use 10 AWG wire; Over 50 feet, use 8 AWG wire.
4. While holding the Torch Cable Clamp with electrode wire clearly out of the way of any
grounded objects, turn the Power Switch to the ON position.
5. Momentarily press the Torch switch to test the wire feed speed.
Adjust the speed by turning the Wire Feed Speed Knob
(9).
6. Orient yourself on the area to be welded, then place the
Face Shield over your eyes.
Warning: Never look at the ignited arc without ANSI approved,
arc shaded, eye protection in a full face shield. Permanent
eye damage or blindness can occur. Skin burns can occur.
Never breath arc fumes.
7. Press (and hold) the Torch button and stroke the area to be
welded with the electrode wire to ignite the arc.
Never tap the electrode wire into the welding surface to ignite the arc. This damages its
external coating on the electrode which prevents oxygen in the air from coming into
contact with the molten metal, causing it to oxidize.
8. Once the arc is ignited, tilt the electrode wire forward at an angle of approximately 35°.
The wire feeds automatically at a speed dependent on the Min. or Max. current setting.
Note: If too much current is drawn from the MIG Welder, the Thermal Overload protector will
activate, the amber indicator will light, and the Arc Welder will turn off until it cools down. If this
happens, turn the Power Switch to the OFF position and wait about 3 ~ 5 minutes.
9. When the weld is complete, lift the electrode wire clearly away from any grounded
object, set the Face Shield down and turn toward the MIG-100 Welder and turn the
Power Switch to the OFF position.
10. Unplug the Power Cord from the electrical outlet.