Lincoln Electric SVM141-A service manual Diagram L10747-2, Squarewave

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NOTE:

This code

L1(U) H1

H4 (575V)

H2 (460V)

Wiring

G-3

SQUAREWAVE diagram is for reference only. It may not be accurate for is pasted inside one of the enclosure panels of yourmachine

L2 (V)

575 VOLT CONNECTION (AS SHOWN) CONNECT A TO HIGH (H4)

460 VOLT CONNECTION				TO GROUND PER
CONNECT A TO LOW (H2)					NATIONAL
				ELECTRICAL CODE
					L1(U)	HIGH
					L2 (V)	MID
						LOW
				CHOKE	SECONDARY
				THERMOSTAT	THERMOSTAT	J21
					316	255
					315	254
		(+)
G3 217 220 G2 G1 218 G4 216	(-)		314	313	THERMOSTAT
	222R	W221
					PRIMARY
						J20
					255
					254
J1	J2		J3

J4

S1	C3	C4
A
250			H1
H4	C1
	C2
H2
N.C.
		L2
DOWNSLOPE CONTROL	TOROID		CURRENT CONTROL
R4			R1
270		277
		276
			248
POSTFLOW CONTROL			BALANCE CONTROL
R3		277A	R2

	232A		232		H1
	211A	R8	211B	211		X10			T1
					W 209		S
						18VAC
					R 210	X9	F
	W 221								X1
					W 201	X7		S
	R 222
						18VAC			78VAC
								F
					W 204	X8			X2
					B 232	X3
			232C		232B	115VAC
					231B
	SCR1					X4
					B 231
G1	(+)				211	X5
218			POS			23VAC
					212	X6
G2
	SCR2
			L1	POLARITY SWITCH MICRO SWITCH
				AC	A-C, D-E, B-F	OPEN
				DC+	B-D, C-E, A-F, G-H	CLOSED
217			FRONT GANG	DC- B-D, A-E, C-F, G-H		CLOSED
			D	D2		S2A
G3							NO
					H
	SCR3		E	A			NC
220			F	NEG	G
	)-(		C
220A
			POS			275C
		D1
	SCR4		B	X1
G4
216		X2	S2
	NEG		POLARITY		(REAR VIEW, SHOWN
			SWITCH
					IN AC POSITION)

Diagram (L10747-2)

ELECTRICAL

TIG 275 all machines covered .

N.A.

J5

			275C
	246		275B
			277B
249			245
			312
246
		275A
312
275			S3
251	275	STICK
242			MODE SWITCH
245	251	4 STEP TIG

R7

252

253

R6

DIAGRAMS

by this

		248	243	2 STEP TIG
		276			THERMAL LIGHT
		243	277C	Y		247
CONTROL PC BOARD
		277			BRASS
			B 242	TL1
		252			TERMINAL
	J6
		253

BYPASS/

STABILIZER

PC BOARD

L10747-2C-UF	manual. The wiring diagram specific to
	your

N.B.J7A

J8J7

261 260 247 220A 201 212 236 211A 204 232A	234 238 231	235 210 209	D E C F B A
W W B	B	R W
			238
FAN			236
		234A	SV2
		235A

SV1

L5

TOROID

236A

A	A
B	B
C	C
D	D
E	E
F	F

REMOTE RECEPTACLE

S

115VAC T2

F

	10K A-B
	AT MINIMUM			237
OPTIONAL
REMOTE	OR	TIG	R5	C6
AMPTROL TM		PULSER
				236B

L3C5

SPARK

GAPT3

L4

ARC STARTER AS'BLY

N.A. CONNECTION IS PIN TO PIN BETWEEN

J4 AND J20 (i.e. PIN 1 TO PIN 1).
N.B. ROBOTIC INTERFACE CONNECTION.	J5
N.C. NOT PRESENT ON EARLIER PC BOARDS.	ELECTRICAL SYMBOLS PER E1537.	XC-UF

G-3