ELECTRICAL DIAGRAMS G-2
LF-72/74

WIRING DIAGRAM - ENTIRE MACHINE - CODE 11075, 11076, 11077 (L12146) LF-72

L12146
A
CAVITYNUMBERING SEQUENCE
(COMPONENTSIDE OF P.C. BOARD)
J3
2
1
J5,J8
J9,J60
4
3
6
1
GENERALINFORMATION
ELECTRICALSYMBOLS PER E1537
COLORCODE
B- BLACK
R- RED
U- BLUE
COMMONANALOG P.C. BOARD
A
D
C
B
E
554
556
TRIGGER
CONNECTOR
J4
559
515
558
COLDFEED
S1
FEED
PLATE
GENERALINFORMATION
ELECTRICALSYMBOLS PER E1537
COLORCODE
B- BLACK
R- RED
U- BLUE
GENERALINFORMATION
ELECTRICALSYMBOLS PER E1537
COLORCODE
B- BLACK
R- RED
U- BLUE
GENERALINFORMATION
ELECTRICALSYMBOLS PER E1537
COLORCODE
B- BLACK
W- WHITE
R- RED
U- BLUE
TRIGGER
INPUT
67
J1
556
10
1234567891112 13 14 15 16
J14
559
10
1234567891112 13 14 15 16
12
J3
1234
J2
1
4
3
2
6
5
P5
8
7
MOTOR/
GEARBOX
WB
B
W
L5
515
558 589
587
554
551
550
551
550
576
577 575C
553 552
J7
3
4
1
2
24
K
E
Y
580
552A 605 606
601
607
608
5 6
515A
R
TACH
U
B
THERMALLED
W
563
563
562
575B
562
WB
P9
12345678
50 5141A 552C
10K/2W
3
2
1
77
76
2
1
P7
4
3
REMOTE
CONTROL
VOLTAGE
POTENTIOMETER
(OPTIONAL)
75A
76A
77A
WIREFEED
SPEED
CONTROL
POTENTIOMETER
577A
576A
575A
3
2
1
10K/2W
1
4
3
2
6
5
P8
575
577
576
589
TRIGGER
INTERLOCK
S2
587
-
+
BRIDGE
DIODE
RECTIFIER
MOUNTED
BAFFLE
580 42
552C
552A
41
41A 552B
POST-FLOW BURNBACK TIMERKIT
(OPTIONAL)
J60
12345678
601 515A 605 607
608
606A
552
553
GAS
SOLENOID
14PIN
AMPHENOL
CONNECTOR
TOPOWER
SOURCE
OUTPUT
CONTROL
A
J6
B
2C
4D
77A
E
76A
F
75A
G
H
41
I
J
42
K
L
M
67
N
REMOTE
VOLTAGE
CONTROL
42VAC
SENSE
552B
ARCVOLTAGE
ARC
CURRENT
51
50
2-STEP
GASPURGE
L4
L1
577A
576A
575A
75
76
77 75
L2
L3
575
575C
575B
INPUT ELECTRODE
CABLE CONNECTION
J1,J14
9
8
16
1
5
4
8
1
J2
606
606A
B
910
NOTES:

N.A.CAVITYNUMBERINGSEQUENCEAS VIEWED FROMCOMPONENT SIDE OF BOARD.

N.B.CAVITYNUMBERINGSEQUENCEAS VIEWED FROM LEADSIDE OF CONNECTOR.

N.C. TOGGLESWITCHESANDPOTENTIOMETERSSHOWN FROMCONNECTIONSIDE OF SWITCH.

N.D. PINNEAREST THE FLAT EDGE OF LED LENSALIGNSWITHWHITE LEAD OF LEDSOCKET.

N.B.
N.B.
N.B.
N.D.
N.C.
N.C.
N.C.
N.C.
N.A.
N.A.
N.B.
N.B.

G-2

NOTE: This diagram is for reference only.It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine.
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