Справочник Пользователя для Lincoln Electric SVM 106-A

Скачать
Страница из 121
i
LN-7 GMA WIRE FEEDER
SAFETY
FUMES AND GASES
can be dangerous.
3.a. Welding  may  produce  fumes  and  gases
hazardous to health. Avoid breathing 
these fumes and gases. When welding, 
keep   your   head   out  of  the  fume.  Use 
enough ventilation and/or exhaust at the arc
to  keep fumes  and  gases  away  from the
breathing zone.     When welding with
electrodes which require special ventilation such as stainless
or hard facing (see instructions on container or MSDS) or on
lead or cadmium plated steel and other metals or coatings
which produce highly toxic fumes, keep exposure as low as
possible and below Threshold Limit Values (TLV) using local
exhaust or mechanical ventilation. In confined spaces or in
some circumstances, outdoors, a respirator may be required.
Additional precautions are also required when welding on
galvanized steel.
3.b. Do not weld in locations near chlorinated hydrocarbon 
vapors coming  from  degreasing,  cleaning or  spraying 
operations. The heat and rays of the arc can react with 
solvent vapors to form  phosgene,  a  highly  toxic  gas, and  
other  irritating products.
3.c. Shielding gases used for arc welding can displace 
air and cause injury or death. Always use enough ventilation,
especially in confined areas, to insure breathing air is safe.
3.d. Read and understand the manufacturer’s instructions for this
equipment and the consumables to be used, including the
material safety data sheet (MSDS) and follow your
employer’s safety practices. MSDS forms are available from
your welding distributor or from the manufacturer.
3.e. Also see item 7b.
ELECTRIC SHOCK
can kill.
1.a. The electrode and work (or ground) circuits
are electrically  “hot”  when  the welder is on. 
Do not touch these “hot” parts with your 
bare skin or wet clothing. Wear dry, hole-free
gloves to insulate hands.
1.b. Insulate yourself from work and ground using dry insulation.
Make certain the insulation is large enough to cover your full
area of physical contact with work and ground.
In addition to the normal safety precautions, if welding
must be performed under electrically hazardous
conditions (in damp locations or while wearing wet
clothing; on metal structures such as floors, gratings or
scaffolds; when in cramped positions such as sitting,
kneeling or lying, if there is a high risk of unavoidable or
accidental contact with the workpieceor ground) use the
following equipment: 
• Semiautomatic DC Constant Voltage (Wire) Welder.
• DC Manual (Stick) Welder.
• AC Welder with Reduced Voltage Control.
1.c. In semiautomatic or automatic wire welding, the electrode,
electrode reel, welding head, nozzle or semiautomatic
welding gun are also electrically “hot”.
1.d. Always be sure the work cable makes a good electrical
connection with the metal being welded. The connection
should be as close as possible to the area being welded.
1.e. Ground the work or metal to be welded to a good electrical
(earth) ground.
1.f. Maintain the electrode holder, work clamp, welding cable and
welding machine in good, safe operating condition.  Replace
damaged insulation.
1.g. Never dip the electrode in water for cooling.
1.h. Never simultaneously touch electrically “hot” parts of
electrode holders connected to two welders because voltage
between the two can be the total of the open circuit voltage
of both welders.
1.i. When working above floor level, use a safety belt to protect
yourself from a fall should you get a shock.
1.j. Also see Items 4.c. and 6.
PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN
AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.
Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you pur-
chase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1” from the American Welding Society, P.O. Box 351040,
Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available from the
Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.
BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE PER-
FORMED ONLY BY QUALIFIED INDIVIDUALS.
ARC RAYS can burn.
2.a. Use a shield with the proper filter and cover
plates to protect your eyes from sparks and
the rays of the arc when welding or
observing open arc welding.  Headshield and
filter lens should conform to ANSI Z87. I
standards.
2.b. Use suitable clothing made from durable flame-resistant
material to protect your skin and that of your helpers from
the arc rays.
2.c. Protect other nearby personnel with suitable, non-flammable
screening and/or warn them not to watch the arc nor expose
themselves to the arc rays or to hot spatter or metal.
ARC WELDING can be hazardous.
WARNING