Lincoln Electric LN-25 PRO DUAL POWER Service Manual page 94

G-2
WiriNG DiaGram - cOmplETE machiNE - (G6334)
PRESET P.C. BOARD
J12 J8
1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10
821
WORK
41B
42B
A
FL EX
CONNECTS TO J1
ON CONTROL BD
WIRE FEED REMOTE
CONTROL
SPEED
VOLTAGE
CONTROL
RHEOSTAT
RHEOSTAT
10K2W 10K2W
R1 R2
75A
577A 575A 77A
576A 76A 75
76
77
41B
41C
BRIDGE
AC
RECTIFIER
621A
621B
42C
CONNECT TO J18
41C
ON HARNESS
P18
1 2 3 4
TRIGGER
CONNECTOR
622A
A BRIDGE
AC
B
500A
P14 RECTIFIER
C
555A
D
622B
E WORK A
721
TO WORK CLIP
WORK
TIMER KIT (OPTIONAL)
POST-FLOW BURNBACK
J60
14 PIN CIRCULAR
1
2 3 4 5 6 7 8
CONNECTOR
TO POWER
608
601 605
509B SOURCE
4B 606 607
TO P60 ON
HARNESS
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.
ElEcTrical DiaGramS
TRIGGER
INTERLOCK /
J10 J9
2 STEP
N.B.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4
(SHOWN IN 2 STEP)
801 707A 805 667B 721
802 804 708A
67 21D 767 621B
N.B.
S3
COLD
FEED
N.O.
BLACK A
RED A
WORK A
P11
P21/J21
805
1
804 1
2
801 2
3
3
802
4
4
5
CONNECTS TO J11
6 BLACK
ON HARNESS
FAN
7
8 RED
555
P7/J7
667B
721A
1
667A
500A 500
2
555
D2 555A
3
AC
622A 622
4
42B 707A 707
5
575A
42C 575
6
576A 576
7
577A 577
8
708A 708
9
75 75C
10
76 76C
11
77 77C
12
1B
13
1W
14
2B
821 15
2W
16
821A
767 67B 67C
1
D1 2
AC
667A 667C
3
821A 821B
4
67B
21E
67 21D
5
621A 621
6
P17/J17
P15
A
P19
B
1
2 67
OUTPUT C
4 2
CONTROL
D
77D 75D 3
REMOTE E
4
76D 76D
VOLTAGE F
5
CONTROL G 75D 77D
21F 21F 6
H
41A 2 7
I
8
42VAC L6 4
J
42A 41A 9
K
42A 10
L
M
67
N
WIRING DIAGRAM- LN-25 PRO DUAL POWER
S1 S2
509D
509D
509E 509C
CC / CV
587A 523A
N.B.
(SHOWN IN CV)
P16/J16
509C 509
1
587A 587
2
509E 523A 523
3
530A 530A 530
4
1 601
2 509B
3
4 4B
FEED P60
5 605
PLATE
6 606
608
7
TACH 8 607
R
M OT OR /
U
GEARBOX
CONNECTS
B
TO TIMER
KIT
W B
P20/J20
1
2
L4
R
3 531
U 4
537
B 5 534
6 L5
B
7 551
W 8 550
3B
4B
667
1
42
2
667D 667E J18
41
3
CONNECTS TO P18
4
ON CASE FRONT
BYPASS CAPACITOR
J15
ASSEMBLY
67G 67H 1
67E
2
75E 75E 3
75C
76E
76E 4 76C
L7
5
77E 77E 77C
21G 21G
6 21E
2B 2B 7
2A
4B
4B 8 4A
41B 41B 9
41
42B 42B 10
42
GB
MOTOR FILTER P.C. BOARD
509A
FL EX
530 523 509A 707 500 2W 3B
509
612 587 708 610 622 1W
CONNECTS TO J8
509B ON PRESET P.C. BD.
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
J6
CONTROL P.C. BOARD
B2
B1
N.C.
+
J4
C1
J5
C2
1 2 3 4 5 6 7 9 10 11 12
1 2 3 4 5 6 7 8
N.C.
667 2A 721A 67F 550 690 507 537 531 575
4A 821B 621 551 691 577 578 534
507 578
CURRENT
1 2 3 4
TRANSDUCER
J11
CONTACTOR
N OT ES:
N.A. PIN NEAREST THE FL AT EDGE OF LED LENS (ANODE) ALIGNS WITH WHITE
LEAD OF LED SOCKET.
N.B. SWITCHES SHOWN FROM REAR CONNECTION SIDE OF SWITCH.
N.C. N OT PRESENT ON ALL MODELS
76C 4A 42
21E
2A 41
67E 75C 77C
E
D
A
J14
C
B
J
A
I
K
GENERAL INFORMATION
B
H
N
J12
L
ELECTRICAL SYMBOLS PER E1537
C G
M
D
LEAD COLOR CODING
F
E
B - BLACK
W - WHITE
G-2
J61 J62
N.C.
1 2 3 4 1 2
667D B1 C1
667E B2 C2
1 601
2 606
3
608
4
5 605
J1 J2
6 607
7 EXTRA
8 TO RQUE
9
555
10
GAS PURGE
PUSHBUTTON
SWITCH
612
N.O.
610
S4
1
N.B.
2
3
4
J3
5
6
7
8
576
690
GAS
SOLENOID
691
CONTACTOR COIL
67F
67C
67D 67E
INPUT ELECTRODE
CABLE CONNECTION
CAVITY NUMBERING SEQUENCE
(VIEWED FROM COMPONENT SIDE OF P.C. BOARD)
1 2 1 3
J11, J16,
J12, J17
J18, J61
4 6
3 4
5 8
1 4
J3, J5, J9,
J19
J20, J60
1 4 5 8
1 5 1 6 1 8
J1, J2, J8, J15
J4 J6, J7, J10
6 10 12 16
7 9
C
G6334PRINT
lN-25™ prO DUal pOWEr