Cutmaster a40 – Tweco A40 CutMaster User Manual

Page 8

CUTMASTER A40

1-2

GENERAL INFORMATION

Manual 0-4978

• Disconnect power source before performing any service

or repairs.

• Read and follow all the instructions in the Operating

Manual.

FIRE AND EXPLOSION

Fire and explosion can be caused by hot slag, sparks, or the

plasma arc.

• Be sure there is no combustible or flammable material

in the workplace. Any material that cannot be removed

must be protected.

• Ventilate all flammable or explosive vapors from the

workplace.

• Do not cut or weld on containers that may have held

combustibles.

• Provide a fire watch when working in an area where fire

hazards may exist.

• Hydrogen gas may be formed and trapped under alu-

minum workpieces when they are cut underwater or

while using a water table. DO NOT cut aluminum alloys

underwater or on a water table unless the hydrogen gas

can be eliminated or dissipated. Trapped hydrogen gas

that is ignited will cause an explosion.

NOISE

Noise can cause permanent hearing loss. Plasma arc processes

can cause noise levels to exceed safe limits. You must protect

your ears from loud noise to prevent permanent loss of hearing.

• To protect your hearing from loud noise, wear protec-

tive ear plugs and/or ear muffs. Protect others in the

workplace.

• Noise levels should be measured to be sure the decibels

(sound) do not exceed safe levels.

• For information on how to test for noise, see item 1 in

Subsection 1.03, Publications, in this manual.

PLASMA ARC RAYS

Plasma Arc Rays can injure your eyes and burn your skin. The

plasma arc process produces very bright ultra violet and infra

red light. These arc rays will damage your eyes and burn your

skin if you are not properly protected.

• To protect your eyes, always wear a welding helmet or

shield. Also always wear safety glasses with side shields,

goggles or other protective eye wear.

• Wear welding gloves and suitable clothing to protect your

skin from the arc rays and sparks.

• Keep helmet and safety glasses in good condition. Re-

place lenses when cracked, chipped or dirty.

• Protect others in the work area from the arc rays. Use

protective booths, screens or shields.

• Use the shade of lens as suggested in the following per

ANSI/ASC Z49.1:

Minimum Protective

Suggested

Arc Current

Shade No.

Less Than 300*

300 - 400*

400 - 800*

* These values apply where the actual arc is clearly

seen. Experience has shown that lighter filters may

be used when the arc is hidden by the workpiece.

WARNING

WARNING: This product contains chemicals,

including lead, known to the State of California to

cause birth defects and other reproductive harm.
Wash hands after handling.

1.03 PUBLICATIONS

Refer to the following standards or their latest revisions for

more information:

1. OSHA, SAFETY AND HEALTH STANDARDS, 29CFR

1910, obtainable from the Superintendent of Docu-

ments, U.S. Government Printing Office, Washington,

D.C. 20402

2. ANSI Standard Z49.1, SAFETY IN WELDING AND CUT-

TING, obtainable from the American Welding Society,

550 N.W. LeJeune Rd, Miami, FL 33126

3. NIOSH, SAFETY AND HEALTH IN ARC WELDING AND

GAS WELDING AND CUTTING, obtainable from the

Superintendent of Documents, U.S. Government Print-

ing Office, Washington, D.C. 20402

4. ANSI Standard Z87.1, SAFE PRACTICES FOR OCCU-

PATION AND EDUCATIONAL EYE AND FACE PROTEC-

TION, obtainable from American National Standards

Institute, 1430 Broadway, New York, NY 10018

5. ANSI Standard Z41.1, STANDARD FOR MEN’S SAFETY-

TOE FOOTWEAR, obtainable from the American Na-

tional Standards Institute, 1430 Broadway, New York,

NY 10018

6. ANSI Standard Z49.2, FIRE PREVENTION IN THE USE

OF CUTTING AND WELDING PROCESSES, obtainable

from American National Standards Institute, 1430

Broadway, New York, NY 10018