Lincoln Electric V155-S service manual Figure E.2 General Description

E-2	THEORY OF OPERATION	E-2
	FIGURE E.2 — GENERAL DESCRIPTION

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							BLUE
ON/OFF SWITCH			5	2		WHITE
			4	1	WHITE
	L	WIRE TIE			BLUE		PWR1 PWR2 PWR4 PW
					BLACK	AC1
	N				WHITE	AC2		INPUT BOARD
	G
115/230Vac						PE		W05X0701
								(SCHEMATIC: X0701)
50/60 Hz
								RECONNECT
								BOARD
				WHITE	BLUE			W05X0408
		FAN						(SCHEMATIC: X0408)
					RED	JP4
TWISTED CABLE					BLACK
RIBBON CABLE

PCB CONNECTOR CAVITY NUMBERING SEQUENCE
(VIEWED FROM COMPONENT SIDE OF P.C. BOARD)
1	4	2	16

4 PINS 1 16 PINS 15

			RED		DC+
			BLACK		DC-
R3	DC+	RED
		BLACK		Y/G	PE
	DC-		JP1
JP1					JP1	INVERTER BOARD
						W05X0519
						(SCHEMATIC: X0519)
						P1		-
						N1	SHUNT
		CONTROL BOARD					BLACK	RED
		W05X0708-1						WHITE
		(SCHEMATIC: X0708)		RED
		PE
			JP2	BLACK
				WHITE

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GENERAL DESCRIPTION

The INVERTEC® V155-S is an industrial 155 amp arc welding power source which utilizes single phase input power, to produce constant current output. The welding response of this Invertec has been optimized for stick (SMAW) and Touch Start TIG (GTAW). The unit is ideal for industrial applications where portability is important.

The INVERTEC® V155-S is recommended for stick welding with such popular electrodes as Fleetweld 35, Fleetweld 37, Fleetweld 180 and LH 78. It features automatic arc control to adjust the arc force, hot start and anti sticking. The machine also features soft and crisp modes.

The INVERTEC® V155-S performs DC Touch Start Tig starting with excelent results.

The INVERTEC® V155-S is rated at 155 amps, 16.2 volts, at 30% duty cycle on a ten minute basis. It is capable of higher duty cycles at lower output currents. It is capable of 105 amps, 14.2 volts at 100% duty cycle. If the duty cycle is exceeded, a thermal protec- tor will shut off the output until the machine cools. See Technical Specifications in A-1 for other rated outputs. the INVERTEC® V155-S is recommended for stick welding with such popular electrodes as Fleetweld® 35, Fleetweld 37, Fleetweld 180 and Jet-LH 78MR. It features adjustable arc control to adjust the arc force and start.

LIMITATIONS

The INVERTEC® V155-S is not recommeded for pipe thawing.

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

INVERTEC® V155-S