Lincoln Electric 11521 service manual Welding Cutting, For Electrically, Iii

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iii					SAFETY					iii
	WELDING			and	CUTTING	CYLINDER may explode
	SPARKS can cause fire or					if damaged.
	explosion.					7.a. Use only	compressed		gas	cylinders
	6.a. Remove fire hazards from the welding area.If					containing the correct shielding gas for the
						process used and		properly		operating
	this is not possible, cover them to prevent the welding sparks
						regulators	designed	for	the	gas and
	from starting a fire. Remember that welding sparks and hot
						pressure used. All hoses, fittings, etc. should be suitable for
	materials from welding can easily go through small cracks
						the application and maintained in good condition.
	and openings to adjacent areas. Avoid welding near hydraulic
	lines. Have a fire extinguisher readily available.					7.b. Always keep cylinders in an upright position securely
6.b. Where compressed gases are to be used at the job site,						chained to an undercarriage or fixed support.
	special precautions should be used to prevent hazardous					7.c. Cylinders should be located:
	situations. Refer to “Safety in Welding and Cutting” (ANSI
						• Away from areas where they may be struck or subjected to
	Standard Z49.1)	and the	operating		information for the
						physical damage.
	equipment being used.
6.c. When not welding, make certain no part of the electrode						• A safe distance from arc welding or cutting operations and
						any other source of heat, sparks, or flame.
	circuit is touching the work or ground. Accidental contact can
	cause overheating and create a fire hazard.					7.d. Never allow the electrode, electrode holder or any other
6.d. Do not heat, cut or weld tanks, drums or containers until the						electrically “hot” parts to touch a cylinder.
	proper steps have been taken to insure that such procedures					7.e. Keep your head and face away from the cylinder valve outlet
	will not cause flammable or toxic vapors from substances
						when opening the cylinder valve.
	inside. They can cause an explosion even though they have
	been “cleaned”. For information, purchase “Recommended					7.f. Valve protection caps should always be in place and hand
	Safe Practices for the Preparation for Welding and Cutting of
						tight except when the cylinder is in use or connected for
	Containers and	Piping	That	Have	Held Hazardous
						use.
	Substances”, AWS F4.1 from the American Welding Society
	(see address above).					7.g. Read and follow the instructions on compressed gas
						cylinders, associated equipment, and CGA publication P-l,
6.e. Vent hollow castings or containers before heating, cutting or						“Precautions for Safe Handling of Compressed Gases in
	welding. They may explode.					Cylinders,” available from the Compressed Gas Association
						1235 Jefferson Davis Highway, Arlington, VA 22202.
6.f.	Sparks and spatter are thrown from the welding arc. Wear oil
	free protective garments such as leather gloves, heavy shirt,					FOR ELECTRICALLY
	cuffless trousers, high shoes and a cap over your hair. Wear
	ear plugs when welding out of position or in confined places.
						powered equipment.
	Always wear safety glasses with side shields when in a
	welding area.
						8.a. Turn off input power using the disconnect
6.g. Connect the work cable to the work as close to the welding						switch at the fuse box before working on
	area as practical. Work cables connected to the building					the equipment.
	framework or other locations away from the welding area
	increase the possibility of the welding current passing through					8.b. Install equipment in accordance with the U.S. National
	lifting chains, crane cables or other alternate circuits. This can					Electrical Code, all local codes and the manufacturer’s
	create fire hazards or overheat lifting chains or cables until					recommendations.
	they fail.
						8.c. Ground the equipment in accordance with the U.S. National
6.h. Also see item 1.c.						Electrical Code and the manufacturer’s recommendations.

6.I. Read and follow NFPA 51B “ Standard for Fire Prevention During Welding, Cutting and Other Hot Work”, available from NFPA, 1 Batterymarch Park,PO box 9101, Quincy, Ma 022690-9101.

6.j. Do not use a welding power source for pipe thawing.

Refer to http://www.lincolnelectric.com/safety for additional safety information.

Power MIG® 215XT