Lincoln Electric SVM186-A service manual For Electrically, Powered equipment

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iii						SAFETY					iii
	WELDING and CUTTING							CYLINDER may explode
	SPARKS can							if damaged.
	cause fire or explosion.							7.a. Use	only compressed	gas	cylinders
	6.a. Remove fire hazards from the welding area.							containing the correct shielding gas for the
		If this is not possible, cover them to prevent						process used and properly operating
	the welding sparks from starting				a	fire.		regulators designed for the gas and
	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						7.b. Always keep cylinders in an upright position securely
	hydraulic lines. Have a		fire extinguisher readily available.
								chained to an undercarriage or fixed support.
6.b. Where compressed gases are to be used at the job site,							7.c. Cylinders should be located:
	special precautions should be used to prevent hazardous
	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.							• A safe distance from arc welding or cutting operations and
6.c. When not welding, make certain no part of the electrode								any other source of heat, sparks, or flame.
	circuit is touching the work or ground. Accidental contact can						7.d. Never allow the electrode, electrode holder or any other
	cause overheating and create a fire hazard.
								electrically “hot” parts to touch a cylinder.
6.d. Do not heat, cut or weld tanks, drums or containers until the							7.e. Keep your head and face away from the cylinder valve outlet
	proper steps have been taken to insure that such procedures
	will not cause flammable or toxic vapors from substances							when opening the cylinder valve.
	inside. They can cause an explosion even though they have						7.f.	Valve protection caps should always be in place and hand
	been “cleaned”. For information, purchase “Recommended
	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						7.g. Read and follow		the instructions on	compressed gas
	(see address above).
								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
								Cylinders,” available from the Compressed Gas Association
	welding. They may explode.
								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.
6.g. Connect the work cable to the work as close to the welding								8.a. Turn off input power using the disconnect
								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						8.b. Install equipment in accordance with the U.S. National
	increase the possibility of the welding current passing
	through lifting chains, crane cables or other alternate circuits.							Electrical Code, all local codes and the manufacturer’s
	This can create fire hazards or overheat lifting chains or							recommendations.
	cables until 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.

Jan ‘07