Lincoln Electric 11937 Service Manual page 53

G-2
WIRING DIAGRAM - COMPLETE MACHINE - M24682 (CODES 11937, 11938, 11939, 11940)
WARNING
Do not operate with covers removed.
Disconnect input power by unplugging
power cord before servicing.
Do not touch electrically live parts
Only qualified persons should install,
use or service this machine.
HIGH VOLTAGE
can kill
WHITE
CIRCUIT BREAKER
BLACK
GND
TO GROUND
PER NATIONAL
ELECTRICAL
CODE.
230V FAN
204
202
12 VDC
GAS
SOLENOID
NOTES:
N.A. BOLTED ALUMINUM CONNECTIONS REQUIRE E2529 JOINT
COMPOUND (BURNDY PENETROX A13) WHEN REATTACHING.
N.B. WORK AND GUN CONNECTIONS SHOWN FOR GMAW WELDING.
N.C. CAVITY NUMBERING SEQUENCE VIEWED FROM INSERTION SIDE
OF CONNECTORS.
N.D. COMPONENT VIEWED FROM REAR.
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.
WIRING DIAGRAM
CONTROL P.C. BOARD
J2 J3
B1 B2
1 2 3 4 1 2 3 4 5 6 7 8 9 0 1
522
524
520
521
OUTPUT
CHOKE
T1
RECTIFIER
TRANSFORMER
319
X1
H2
308
H1 X2
X4
X3
LOCATED IN TRANSFORMER
THERMOSTAT
ELECTRICAL DIAGRAMS
J6
321
309
315
11 12 13 14 15 16
317
N.D.
SPOOL GUN
SWITCH
S2
306
318
WIRE FEED MOTOR
1
305
2
311
3
312
4
C
304
5
6
320 D
313 7
314
8
P4
303
302 R
301
C1
R
N.A.
310
316
321
ELECTRICAL SYMBOLS PER E1537
MAGNUM 100SG
SPOOL GUN
(OPTIONAL)
MOTOR
EITHER
MAGNUM 100L
PUSH GUN
WORK
N.B.
522
N.D.
203
S1
523
ON/OFF SWITCH
N.D.
N.C.
1 2
SELECTOR
A A
SWITCH
P2
B
4 5
LATCH
304
1 2 3 4 5 6 7 8
E
P3
9 10 11 12 13 14 15 16
LATCH
P4
N.D.
ARROW
N.C.
J6
1
2
3
4
A.05
M24682
G-2
WIRE FEEDER WELDER (180 MODEL)