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G-3
ELECTRICAL DIAGRAMS
LN-8
CONNECTION SCHEMATIC
14669
Ch’ge. Sht. No.
3-31-83N
11-14-86G
2-13-87G
t
UNLESS OTHERWISE SPECIFIED TOLERANCE
ON HOLE SIZES PER E2056
ON 2 PLACE DECIMALS IS .02
WITH PUBLISHED STANDARDS.
ON 3 PLACE DECIMALS IS .002
ON ALL ANGLES IS .5 OF A DEGREE
MATERIAL TOLERANCE (" ") TO AGREE
THE LINCOLN ELECTRIC CO.
CLEVELAND, OHIO U.S.A.
EQUIP.
TYPE
SCALE
SUBJECT
DR
DATE CHK
REF.
SUP’S’D’G
SHT.
NO.
THE LINCOLN ELECTRIC CO.
THIS SHEET CONTAINS PROPRIETARY INFORMATION
OWNED BY AND IS
NOT TO BE REPRODUCED, DISCLOSED OR USED
THE LINCOLN ELECTRIC CO.
M
M
WITHOUT THE EXPRESS PERMISSION OF
14669
3-4-83
NONE
FI
6-20-97
LN-8N AND -8S
CONNECTION SCHEMATIC
568
567
6
3
4
1
8
7
5
9
21
543
GND
568
567
2
541
ARM
539
525
627
626
528
541
THERMAL CIRCUIT BREAKER
21
567
635
636
637
VARIABLE VOLTAGE P.C. BD. (OPTIONAL)
21
567
635
636
637
631 632 634
32A
7
635
636 637
541
32A
CONTROL P.C. BD.
REV.
FWD.
7
32A
683
627
682
RELAY
P.C. BOARD
626
32A
7
536
523
525A
529
526
531A
32A
522
LOW VOLTAGE
TRIGGER TRANSFORMER
2CR REED SWITCH
ON
OFF
627
531
524
502 504
32A
531
2
4
115 V.A.C. (31 AND 32)
TO POWER SOURCE WORK TERMINAL
JUMPER CONNECTOR IS REMOVED AND CONNECTOR "B" IS PLUGGED
INTO OPTIONAL BURNBACK P.C. BOARD
ACTUATED BY MOTOR TEMPERATURE
ELECTRICAL SYMBOLS PER E1537
WORK
METER KIT
RECEPTACLE
WIRE FEED
MOTOR
504
502
METER
SHUNT
ELECTRODE TO POWER SOURCE
10K
31
21
75 76
77
31
531
2
POWER SOURCE
OUTPUT CONTROL
INTERLOCK
SWITCH
GUN TRIGGER
SWITCH
524
528
525A
525
4CR
.1
QUICK CONNECT TERMINALS ON
BOARD FOR CONNECTION OF
AUXILIARY EQUIPMENT 115 V.A.C.
JUMPER CONNECTOR IS REMOVED AND
CONNECTOR "A" PLUGGED INTO
OPTIONAL VARIABLE VOLTAGE POWER
SOURCE BOARD.
FACTORY INSTALLED IN CV-VV
THE VARIABLE VOLTAGE BOARD IS
MODELS AND DOES NOT INCLUDE
JUMPER CONNECTOR.
JUMPER CONNECTOR
WORK TO POWER SOURCE
CONNECTOR "A"
543
539
5K
WIRE FEED
SPEED
CONTROL
DIRECTION
OF WIRE
FEED SWITCH
1CR
CASE GROUNDING
SCREW
502
504
4
531
32A
2
5 AMP
CIRCUIT
BREAKER
BURNBACK
P.C. BOARD (OPTIONAL)
2
4
GND
32
TO POWER SOURCE
TO OPERATE CONTACTOR
32
32A
JUMPER
CONNECTOR
CONNECTOR
"B"
BOLTED
CONNECTION
RESISTOR USED ON CODES
9090 AND BELOW ONLY.
THE GROUNDING LEAD
PROTECTOR CONNECTS
DIRECTLY TO THE CASE
GROUNDING SCREW.
GROUND LEAD PROTECTOR
FOR CODES ABOVE 9090
.25 AMP RATING
G-3
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NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is provided
for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.