Lincoln Electric SVM194-A service manual Theory of Operation, Gasoline Engine

E-2	THEORY OF OPERATION	E-2
	FIGURE E.1 - GENERAL DESCRIPTION (Classic® 300G, Zenith Fuel System/GM Engine)

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	IDLE
	SWITCH
	ENGINE
	RPM CONTROL	FUEL PUMP
ZENITH	HOUR METER
E.C.U.	ENGINE FAILURE LAMP
	IGNITION
	SWITCH	ENGINE
		ALTERNATOR
	AMMETER	START

BATTERY

ENGINE

CONTROL

COMPONENTS

AND

SENSORS

GASOLINE

ENGINE

STARTER

MOTOR

			SELECTOR
				SWITCH					NEGATIVE
								CURRENT	OUTPUT
									TERMINAL
								SENSOR
								P.C. BOARD
					115 & 230VAC
					RECEPTACLES
		GENERATOR
	SERIES	FRAME
	COILS
	GENERATORBRUSHES			COMMUTATOR		ALTERNATOR STATOR
MECHANICALCOUPLING					SHAFT	ROTATOR	RINGSSLIP
	ARMATURE				ARMATURE
			&			-
	INTERPOLE	RESIDUAL			FLASHING			+
	COILS	MAGNETISM
	FIELD
	SHUNT
	WINDINGS					FIELD
						RECTIFIER
				GENERATOR
				FIELD CONTROL					POSITIVE
				RHEOSTAT
									OUTPUT
									TERMINAL

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GENERAL DESCRIPTION

The Classic® 300 welding machines are heavy duty, engine driven DC arc welding power sources capable of providing constant current output for stick welding or DC TIG welding. Also, a total of 3000 watts of auxiliary power is available at the 115 or 230VAC receptacles. The Classic® 300 is manufactured with all copper windings.

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NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion

CLASSIC® 300D & 300G

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