Lincoln Electric R3R-300, R3R-500 Reconnect Procedure, Input Supply Connection Diagram

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A-8		A-8
	INSTALLATION
	RECONNECT PROCEDURE	To reconnect a multiple voltage machine to a different
	Multiple input voltage welders are shipped connected	voltage, remove input power. Follow the input con-
		nection diagram, located on the inside access panel
	for the highest voltage listed on the machine’s rating	cover, appropriate for your machine’s input voltage.
	plate. Before installing the welder, be sure the recon-	These same connection diagrams are shown below.

nect panel is connected for the proper voltage.

For 208, 208/230 & 230/460 volts AC - see Figure A.3.

CAUTION

Failure to follow these instructions can cause immedi- ate failure of components in the welder.

FIGURE A.3 - INPUT CONNECTION DIAGRAM FOR 208, 208/230 and 230/460 VOLTS AC, 50/60 HZ

				DUAL VOLTAGE MACHINE
	Do not operate with covers		Do not touch electrically live parts	INPUT SUPPLY CONNECTION DIAGRAM
	removed			IMPORTANT: CHANGE LINK POSITIONS AND PILOT TRANSFORMER CONNECTIONS.
	Disconnect input power before Only qualified persons should install,
				NOTE: MACHINES ARE SHIPPED FROM FACTORY CONNECTED FOR OVER 300 VOLTS
	servicing		use or service this equipment
		CONNECTION FOR HIGHEST RATING PLATE VOLTAGE, 50 OR 60 HZ.
LINK				1. TURN OFF THE INPUT POWER USING THE DISCONNECT SWITCH AT THE FUSE BOX.
	L3	W CR1		2. DISCONNECT AND INSULATE THE H2 LEAD TERMINAL WITH TAPE TO PROVIDE AT
LINES	L2			LEAST 600 VOLT INSULATION.
		V		3. CONNECT L1, L2 & L3 INPUT SUPPLY LINES AND H3 TRANSFORMER LEADS
INPUT
		CONTACTOR
{L1		U		TO THE INPUT SIDE OF THE CR1 CONTACTOR AS SHOWN.
				4. CONNECT TERMINAL MARKED TO GROUND PER LOCAL AND NATIONAL ELECTRIC
	GND	H1	H2	CODES.
		H3		5. MOUNT THE LINKS IN THE POSITIONS SHOWN WITH THE PROVIDED HEX NUTS.
		PILOT		DOUBLE UP THE LINKS IN TWO OF THE POSITIONS TO SAVE THEM FOR FUTURE
		TRANSF.		USE. SECURE THE REMAINING HEX NUTS IN PLACE.
		CONNECTION FOR LOWEST RATING PLATE VOLTAGE, 50 OR 60 HZ.
LINK				1. TURN OFF THE INPUT POWER USING THE DISCONNECT SWITCH AT THE FUSE BOX.
LINES	L3	W CR1		2. DISCONNECT AND INSULATE THE H3 LEAD TERMINAL WITH TAPE TO PROVIDE AT
	L2	V		LEAST 600 VOLT INSULATION.
INPUT				3. CONNECT L1, L2 & L3 INPUT SUPPLY LINES AND H2 TRANSFORMER LEADS
		CONTACTOR
{L1		U		TO THE INPUT SIDE OF THE CR1 CONTACTOR AS SHOWN.
	GND	H1		4. CONNECT TERMINAL MARKED TO GROUND PER LOCAL AND NATIONAL ELECTRIC
		H2	H3	CODES.
				5. MOUNT THE LINKS IN THE POSITIONS SHOWN WITH THE PROVIDED HEX NUTS.
		PILOT
		TRANSF.
THE LINCOLN ELECTRIC CO., CLEVELAND OHIO U.S.A. 3-17-95E				M15009

IDEALARC R3R