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F-1
DIAGRAMS
F-1
MULTI-SOURCE
CONTROL PC BOARD
FIRING PC BOARD
56
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
7
8
9
10
1
2
273
274
252
251
3
4
5
6
7
240
8
241
222D
R3
R4
R5
R6
R7
R8
283
284
285
286
287
288
203
204
205
206
207
208
TO T1
AUXILIARIES
J1
J3
J2
261
263
231
202
215A
230
341
201
260
264
235
234
215B
233
232
222A
M10
M9
M6
M5
M4
M3
M2
M1
252
253
274
AC
AC
+
-
273
297
232
233
1
4
7
10
2
5
8
11
3
6
9
12
203
204
205
206
207
208
271
251
FAN
260
261
U
V
W
1CR
241
240
263
FRONT
TRANSFORMER
IRON
SECONDARY LEAD
C2
C1
292
293
TP1
TP2
C3
820uF
500V
R1R2
R9
30
300W
2
300W
30
300W
-+
-
294A
294B
H2
H1
X2
X1
202
201
215A
215
G1
G5
G3
G2
G4
G6
RESISTOR BANK
SCR1
SCR3
SCR5
SCR2
SCR4 SCR6
222D
222B
PARALLELING
CONNECTIONS
CB1
10 A FAN
CIRCUIT
BREAKER
S1
POWER SWITCH
12
11
10
W
9
8
7
V
6
5
4
U
TO
PRIMARY
COILS
550-575V CONNECTION
12
11 10
W
9
87
V
6
54
U
TO
PRIMARY
COILS
440-460V CONNECTION
12
11
10
W
9
8
7
V
6
5
4
U
TO
PRIMARY
COILS
380-415V CONNECTION
TO T2
TO T1
3
POWER
TO T2
TO T1
H2
H1
H2
H1
H2
H1
TO A SYSTEM GROUND PER
NATIONAL ELECTRIC CODE
T1
T1
T1
T2
MULTI-SOURCE WIRING DIAGRAM
16
9
8
1
CONNECTORS VIEWED FROM INSERTION END
ELECTRICAL SYMBOLS PER E1537
1
2
1
3
1
5
1
4
3
4
4
6
5
8
6
10
272
H-RW
L11414
253
+
+
1
2
3
4
5
6
7
8
J7
1
2
283
285
288
287
3
4
5
6
7 340
8
284
J8
9
10
286
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J5
215
231
1
23
4
12
3
4
1
2
3
4
5
6
G2
G3
G4
G5
G6
G1
J4
-
234
235
LED (W) (RIGHT)
230
341
LED (G) (LEFT)
LED (Y) (CENTER)
ELECTRODE
WORK
OUTPUT SHUNT
50 mV@800 A
+
INPUT SNUBBER
ASSEMBLY
L3
L2
L1
G
L3
L2
L1
L3
L2
L1
INPUT
BOX
WELDER
BASE
TRANSFORMER
BRACKET
CONTROL
BOX COVER
PROTECTIVE BONDING CIRCUIT
222C
222A
301
264
(TOP)
(BOTTOM)
264
301
SCR
THERMOSTAT
302
250
REAR
TRANSFORMER
IRON
340
215B
L1
L2
56
7
89
10
M10
M9
M6
M5
M4
M3
M2
M1
12
3
4
DIGITAL OUTPUT METER
M7
M8
P11
J11
CONTROL BOX
DIODE BRIDGE
302
271
OUTPUT
BYPASS
J6
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted inside
the machine on one of the enclosure panels. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code number..