Thermal Arc 201 TS Service Manual page 8

THERMAL ARC 161STL, 201TS
FUMES AND GASES can be hazardous to your health.
Welding produces fumes and gases. Breathing these
fumes and gases can be hazardous to your health.
1. Keep your head out of the fumes. Do not breathe the fumes.
2. If inside, ventilate the area and/or use exhaust at the arc to remove
welding fumes and gases.
3. If ventilation is poor, use an approved air-supplied respirator.
4. Read the Material Safety Data Sheets (MSDSs) and the man-
ufacturer's instruction for metals, consumables, coatings, and
cleaners.
5. Work in a confined space only if it is well ventilated, or while wear-
ing an air-supplied respirator. Shielding gases used for welding
can displace air causing injury or death. Be sure the breathing air
is safe.
6. Do not weld in locations near degreasing, cleaning, or spraying
operations. The heat and rays of the arc can react with vapors to
form highly toxic and irritating gases.
7. Do not weld on coated metals, such as galvanized, lead, or cad-
mium plated steel, unless the coating is removed from the weld
area, the area is well ventilated, and if necessary, while wearing
an air-supplied respirator. The coatings and any metals containing
these elements can give off toxic fumes if welded.
Welding or Cutting
Operation
Torch soldering
Torch brazing
Oxygen Cutting
Light
Medium
Heavy
Gas welding
Light
Medium
Heavy
Shielded metal-arc
welding
(stick) electrodes
Safety Instructions and Warnings
WARNING
Eye protection filter shade selector for welding or cutting
(goggles or helmet), from AWS A6.2-73.
Electrode Size
Metal Thickness
or Welding Current
Under 1 in., 25 mm
1 to 6 in., 25-150 mm
Over 6 in., 150 mm
Under 1/8 in., 3 mm
1/8 to 1/2 in., 3-12 mm
Over 1/2 in., 12 mm
Under 5/32 in., 4 mm
5/32 to 1/4 in.,
4 to 6.4 mm
Over 1/4 in., 6.4 mm
SAFETY INSTRUCTIONS AND WARNINGS
WELDING can cause fire or explosion.
Sparks and spatter fly off from the welding arc. The flying
sparks and hot metal, weld spatter, hot workpiece, and
hot equipment can cause fires and burns. Accidental
contact of electrode or welding wire to metal objects
can cause sparks, overheating, or fire.
1. Protect yourself and others from flying sparks and hot metal.
2. Do not weld where flying sparks can strike flammable material.
3. Remove all flammables within 35 ft (10.7 m) of the welding arc.
If this is not possible, tightly cover them with approved covers.
4. Be alert that welding sparks and hot materials from welding can
easily go through small cracks and openings to adjacent areas.
5. Watch for fire, and keep a fire extinguisher nearby.
6. Be aware that welding on a ceiling, floor, bulkhead, or partition
can cause fire on the hidden side.
7. Do not weld on closed containers such as tanks or drums.
8. Connect work cable to the work as close to the welding area as
practical to prevent welding current from traveling long, possibly
unknown paths and causing electric shock and fire hazards.
9. Do not use welder to thaw frozen pipes.
10. Remove stick electrode from holder or cut off welding wire at
contact tip when not in use.
Filter
Welding or Cutting
Shade
Operation
No.
Gas metal-arc
2
welding (MIG)
3 or 4 Non-ferrous base metal
Non-ferrous base metal
3 or 4 Gas tungsten arc welding
4 or 5 (TIG)
5 or 6 Atomic hydrogen welding
Carbon arc welding
4 or 5 Plasma arc welding
5 or 6 Carbon arc air gouging
6 or 8 Light
10 Heavy
12 Plasma arc cutting
14 Light
Medium
Heavy
1-2
WARNING
Electrode Size Filter
Metal Thickness Shade
or Welding Current No.
All 11
All 12
All 12
All 12
All 12
All 12
12
14
Under 300 Amp 9
300 to 400 Amp 12
Over 400 Amp 14
Manual 0-5148