A. Burn Protection
Comply with precautions in 1-2.
The welding arc is intense and visibly bright. Its radiation can damage eyes, penetrate lightweight clothing, reflect from
GET BURNED; COMPLY WITH PRE- CAUTIONS.
1. Protective Clothing
Wear
Bare skin protection. Wear dark, sub- stantial clothing. Button collar to protect chest and neck, and button pockets to prevent entry of sparks.
2. Eye and Head Protection
Protect eyes from exposure to arc. Eyes may be damaged by radiant energy when exposed to the electric arc, even when not looking in the direction of the arc. Never look at an electric arc without protection.
Welding helmet or shield containing a filter plate shade no. 12 or denser must be used when welding. Place over face before striking arc.
Protect filter plate with a clear cover plate.
Cracked or broken helmet or shield should NOT be worn; radiation can be passed through to cause burns.
Cracked, broken, or loose filter plates must be replaced IMMEDIATELY. Replace clear cover plate when broken, pitted, or spattered.
Flash goggles with side shields MUST be worn under the helmet to give some pro- tection to the eyes should the helmet not be lowered over the face before an arc is struck. Looking at an arc momentarily with unprotected eyes (particularly a high intensity
3.Protection of Nearby Personnel
Enclose the welding area. For production welding, a separate room or enclosed bay is best. In open areas, surround the operation with
Viewing the weld. Provide face shields for all persons who will be looking directly at the weld.
Others working in area. See that all per- sons are wearing flash goggles.
Before starting to weld, make sure that screen flaps or bay doors are closed.
B. Toxic Fume Prevention
Comply with precautions in
Generator engine exhaust must be vented to the outside air. Carbon mon-
oxide can kill.
C. Fire and Explosion Prevention Comply with precautions in
Equipment’s rated capacity. Do not over- load arc welding equipment. It may over- heat cables and cause a fire.
Loose cable connections may overheat or flash and cause afire.
Never strike an arc on a cylinder or other pressure vessel. It creates a brittle area that can cause a violent rupture or lead to such a rupture later under rough handling.
D. Compressed Gas Equipment
Comply with precautions in
E. Shock Prevention
Exposed electrically hot conductors or other bare metal in the welding circuit, or in ungrounded, electrically - HOT equipment can fatally shock a person whose body becomes a conductor. DO NOTSTAND, SIT, LIE, LEAN ON, OR TOUCH a wet surface when welding without suitable protection.
To protect against shock:
Keep body and clothing dry. Never work in damp area without adequate insulation against electrical shock. Stay on a dry duckboard, or rubber mat when dampness or sweat cannot be avoided. Sweat, sea water, or moisture between body and an electrically HOT part - or grounded metal - reduces the body surface electrical resis- tance, enabling dangerous and possibly lethal currents to flow through the body.
1. Grounding the Equipment
When installing, connect the frames of each unit such as welding power source, control, work table, and water circulator to the building ground. Conductors must be adequate to carry ground currents safely. Equipment made electrically HOT by stray currents may shock, possibly fatally. Do NOT GROUND to electrical conduit, or to a pipe carrying ANY gas or a flammable liquid such as oil or fuel.
Before welding, check ground for continuity. Be sure conductors are touching bare metal of equipment frames at connections.
If a line cord with a ground lead is provided with the equipment for connection to a switch box, connect the ground lead to the grounded switch box. If a
2. Connectors
Fully insulated
be used to join welding cable lengths.
3. Cables
Frequently inspect cables for wear, cracks, and damage. IMMEDIATELY REPLACE those with excessively worn or damaged insulation to avoid possibly lethal shock from bared cable. Cables with damaged areas may be taped to give resistance equivalent to original cable.
Keep cable dry, free of oil and grease, and protected from hot metal and sparks.
4.Terminals and Other Exposed Parts
Terminals and other exposed parts of electrical units should have insulating covers secured before operation.
5.Electrode Wire
Electrode wire becomes electrically HOT when the power switch of gas
6. Safety Devices
Safety devices such as interlocks and circuit breakers should not be discon- nected or shunted out.
Before installation, inspection, or service of equipment, shut OFF all power, and remove line fuses (or lock or
Do not open power circuit or change polarity while welding. If, in an emer- gency, it must be disconnected, guard against shock burns or flash from switch arcing.
Leaving equipment unattended. Always shut OFF, and disconnect all power to equipment.
Power disconnect switch must be avail- able near the welding power source.
Python® Lincoln Compatible™ Owner's Manual - Page iii