Shielded Metal Arc Welder
Assembly (Continued)
3 . To attach the handle, place shield on a flat surface and press handle into place (See Figure 5).
Figure 5
NOTE: If you have never welded before or have little experience, a full face helmet is recommended. Both hands are needed to stabilize and control the angle and arc length of the electrode.
Operation
1 . Be sure to read, understand, and comply with all precautions in the General Safety
Information section. Be sure to read the entire section entitled Welding Guidelines prior to using this
equi p ment .
2 . Turn welder off and plug into appropriate receptacle:
3 . Verify that the surfaces of metals to be joined are free from dirt, rust, paint, oil, scale or other contaminants. These contaminants make welding difficult and cause poor welds.
All persons operating this
equipment or in the area while equipment is in use must wear protective welding gear including: eye protection with minimum shade 10 lens, flame resistant clothing, leather welding gloves, and full foot protection.
If heating, welding, or cutting materials that are galvanized, zinc plated, lead,
or cadmium plated refer to the General Safety Information Section for instructions. Extremely toxic fumes are created when these metals are heated.
4 . Connect the work clamp to the work piece. Make sure the contact is on bare metal and not obstructed by paint, varnish, corrosion, or non- metallic materials.
5 . Insert the exposed part of the electrode rod (the end with no flux) into the jaws of the electrode
h o l de r .
The electrode holder and rod are
electrically “live” (current potential) when the welder is on.
Grounding against any metallic
surface may produce an arc which could cause sparks and damage eyesight.
6 . Hold the electrode away from the grounded work piece or workbench. Turn on the welder to either High or Low. Refer to the following chart for proper output s e t t in g .
| Electrode | Output |
| Diameter | Setting |
| 1/16 in. (1.6 mm) | Low |
|
|
|
| 5/64 in. (2 mm) | High |
|
|
|
7 . Position the electrode to begin weld, lower the welding helmet or position the hand shield, and strike an arc. Adjust output setting as
n e e de d .
8 . When finished welding, turn welder off and store properly.
DUTY CYCLE / THERMOSTATIC PROTECTION
Welder duty cycle is the percentage of actual weld time that can occur in a ten minute interval. For example, at a 10% duty cycle, actual welding can occur for one minute, then the welder must cool for nine minutes.
Internal components of this welder are protected from overheating with an automatic thermal switch. A yellow lamp is illuminated on the front panel if the duty cycle is exceeded. Welding operations may continue when the yellow lamp is no longer illuminated.
Maintenance
Disconnect power supply and turn
machine off before inspecting or servicing any components.
Before every use:
1 . Check condition of weld cables and immediately repair or replace any cables with damaged insulation.
2 . Check condition of power cord and immediately repair or replace any cord if damaged.
3 . Check condition of electrode holder insulating pieces and immediately replace cracked or missing insulators. Verify that all fasteners are tight and insulated.
Do not operate this welding machine
with cracked or missing insulation on welding cables, electrode holder, or power cord.
Every 3 months:
Replace any unreadable labels on the welder. Use compressed air to blow all dust and lint from the ventilation
o pe n i n g s .
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