Chicago Electric 64057 Owner's Manual page 11

Operation
After practice welding on scrap, stop, and
check your progress. Perform Strike Test, then
clean and compare your weld's appearance
with the diagrams and descriptions in the
Welding tips section starting on the next
page. After making any necessary adjustments,
continue to weld while carefully following the
DUTY CYCLE guidelines as explained below.
1. Make sure the Welder's Power Switch is OFF before
plugging its Power Cord into the AC receptacle.
2. After the Power Cord is plugged in, the
Welder's front panel Power On light should
be off. Keep Welder off until ready to use.
3. Plug Electrode Holder cable into Positive Socket.
Twist clockwise all the way to lock in place.
4. Plug Ground Clamp cable into Negative
Socket and twist all the way into place.
a. Connect Ground Clamp onto workpiece
(see ground Workpiece, page 9).
Warning! Before striking an arc, put on
protective gear (see Basic Welding warning).
5. Place the bare metal end of the rod, or
stick electrode (sold separately), inside
the jaws of the Electrode Holder.
6. Power on Welder. The Power
On light should brighten.
7. With gloved hand holding onto Electrode Holder
handle, stroke the workpiece lightly with the
electrode to ignite the arc.
Tips for igniting the arc:
a. Tap the surface with the Electrode.
b. Stroke the surface with the Electrode.
c. Strike the surface like a match with the Electrode.
Duty Cycle (Duration of Use)
avoid damage to the Welder by not welding for
more than the prescribed duty cycle time. The
Duty Cycle defines the number of minutes, within a 10
minute period, during which a given welding process can
produce a particular welding current without overheating.
For example, a 75 amp welder with a duty cycle of
40% must be allowed to "rest" for at least 6 minutes
after every 4 minutes of continuous welding.
Failure to carefully observe duty cycle limitations
can easily over-stress a welder's power generation
system contributing to premature welder failure.
Item 64057 For technical questions, please call 1-888-380-0318.
8. After the arc ignites:
a. Lift the Electrode off workpiece the same distance
(gap) as the diameter of the bare metal end.
b. Tilt Electrode back 10 to 20 degrees.
c. Drag Electrode to the back end of the weld
bead puddle to deposit material as needed.
d. Tips for maintaining the arc:
• The gap between electrode and workpiece
must be maintained during welding. It
takes practice to maintain the gap. If too
wide the arc will extinguish. If too narrow
the rod will stick to the workpiece.
• If the rod sticks to the workpiece, gently rock
them back and forth to make them separate.
e. A good arc is accompanied by a crisp,
crackling sound, similar to frying eggs.
f. To lay a weld bead, only two movements
are needed: downward and in the
direction the weld is to be laid.
9. When finished welding; lift the Electrode from
the workpiece, then set electrode Holder
down on nonconductive, nonflammable
surface away from any grounded objects.
10. Allow internal fan to cool Welder. When
cool, turn Power Switch off.
11. To prevent accidents, after use:
• Allow Welder to cool down.
• Unplug Welder's power cord from outlet.
• Disconnect electrode, Electrode
Holder and Ground Clamp Cables.
• Clean, then store Welder and its accessories
indoors out of children's reach.
this Welder has an internal thermal protection
system to help prevent this sort of over-stress. When
the Welder overheats, it automatically shuts down
and the thermal Overload indicator lights. The
welder automatically returns to service after cooling
down. When cooling, rest the Electrode Holder on an
electrically non-conductive, heat-proof surface, such
as a concrete slab, well clear of the ground clamp.
allow the Welder to cool with the power Switch on,
so that the internal Fan will help cool the Welder.
When the Overload Indicator is no longer lit and the
Welder can be used again, use shorter welding periods
and longer rest periods to prevent needless wear.
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