Arc welding safety instructions and warnings – Tweco HMC-410 Robotic Interface Kit User Manual

Page 3

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ARC WELDING SAFETY INSTRUCTIONS AND WARNINGS

Instruction 830001

May 8, 1996

2-1

PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN AWAY. PACEMAKER

WEARERS KEEP AWAY UNTIL CONSULTING YOUR DOCTOR. DO NOT LOSE THESE INSTRUCTIONS. READ OPERATING/INSTRUC-

TION MANUAL BEFORE INSTALLING, OPERATING OR SERVICING THIS EQUIPMENT.
Welding products and welding processes can cause serious injury or death, or damage to other equipment or property, if the operator does not

strictly observe all safety rules and take precautionary actions.
Safe practices have developed from past experience in the use of welding and cutting. These practices must be learned through study and train-

ing before using this equipment. Anyone not having extensive training in welding and cutting practices should not attempt to weld. Certain of the

practices apply to equipment connected to power lines; other practices apply to engine driven equipment.
Safe practices are outlined in the American National Standard Z49.1 entitled: SAFETY IN WELDING AND CUTTING. This publication and other

guides to what you should learn before operating this equipment are listed at the end of these safety precautions.

HAVE ALL INSTALLATION, OPERATION, MAINTENANCE, AND REPAIR WORK PERFORMED ONLY BY QUALIFIED PEOPLE.

ELECTRIC SHOCK can kill.

Touching live electrical parts can cause fatal shocks

or severe burns. The electrode and work circuit is

electrically live whenever the output is on. The input

power circuit and machine internal circuits are also

live when power is on. In semiautomatic or auto-

matic wire welding, the wire, wire reel, drive roll

housing, and all metal parts touching the welding

wire are electrically live. Incorrectly installed or im-

properly grounded equipment is a hazard.

1. Do not touch live electrical parts.
2. Wear dry, hole-free insulating gloves and body protection.
3. Insulate yourself from work and ground using dry insulating mats

or covers.

4. Disconnect input power or stop engine before installing or servic-

ing this equipment. Lock input power disconnect switch open, or

remove line fuses so power cannot be turned on accidentally.

5. Properly install and ground this equipment according to its

Owner’s Manual and national, state, and local codes.

6. Turn off all equipment when not in use. Disconnect power to

equipment if it will be left unattended or out of service.

7. Use fully insulated electrode holders. Never dip holder in water to

cool it or lay it down on the ground or the work surface. Do not

touch holders connected to two welding machines at the same

time or touch other people with the holder or electrode.

8. Do not use worn, damaged, undersized, or poorly spliced cables.
9. Do not wrap cables around your body.

10. Ground the workpiece to a good electrical (earth) ground.
11. Do not touch electrode while in contact with the work (ground) cir-

cuit.

12. Use only well-maintained equipment. Repair or replace damaged

parts at once.

13. In confined spaces or damp locations, do not use a welder with

AC output unless it is equipped with a voltage reducer. Use

equipment with DC output.

14. Wear a safety harness to prevent falling if working above floor

level.

15. Keep all panels and covers securely in place.

ARC WELDING SAFETY INSTRUCTIONS AND WARNINGS

ARC RAYS can burn eyes and skin;

NOISE can damage hearing.

Arc rays from the welding process produce intense

heat and strong ultraviolet rays that can burn eyes

and skin. Noise from some processes can damage

hearing.

1. Wear a welding helmet fitted with a proper shade of filter (see

ANSI Z49.1 listed in Safety Standards) to protect your face and

eyes when welding or watching.

2. Wear approved safety glasses. Side shields recommended.
3. Use protective screens or barriers to protect others from flash

and glare; warn others not to watch the arc.

4. Wear protective clothing made from durable, flame-resistant ma-

terial (wool and leather) and foot protection.

5. Use approved ear plugs or ear muffs if noise level is high.

ARC WELDING can be hazardous.

Eye protection filter shade selector for welding or cutting (goggles or helmet), from AWS A6.2-73.

Welding or Cutting

Operation

Torch soldering

Torch brazing

Oxygen cutting

Light

Medium

Heavy

Gas welding

Light

Medium

Heavy

Shielded metal-arc welding

(stick) electrodes

Welding or Cutting

Operation

Gas metal-arc welding (MIG)

Non-ferrous base metal

Ferrous base metal

Gas tungsten arc welding

(TIG)

Atomic hydrogen welding

Carbon arc welding

Plasma arc welding

Carbon arc air gouging

Light

Heavy

Plasma arc cutting

Light

Medium

Heavy

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

Electrode Size

Metal Thickness

or Welding Current

All

All

All

All

All

All

Under 300 Amp

300 to 400 Amp

Over 400 Amp

Filter

Shade

No.

2

3 or 4

3 or 4

4 or 5

5 or 6

4 or 5

5 or 6

6 or 8

10

12

14

Filter

Shad

e No.

11

12

12

12

12

12

12

14

9

12

14

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