![](/images/new-backgrounds/1260570/26057075x1.webp)
PRECISION TIG 375 WIRING DIAGRAM FOR CODE 10809
CONTROL PANEL (VIEWED FROM REAR)
306 | 1 |
| 1 | 301 |
303 | 2 |
| 2 | 304B |
| 3 | METER | 3 | |
| 4 | 4 | 302 | |
|
| |||
| 5 |
| 5 |
|
| 6 |
| 6 |
|
| (VIEWED FROM REAR) |
| ||
|
|
|
| L5 |
MINIMUM | DISPLAY | N.C. | ||
OUTPUT |
|
R4
| 301 | 1 | |
304B | 302 | 2 | |
303 | 3 | ||
304 | 4 | ||
|
J8
CONTROL PC BOARD
| L1 (U) |
|
| H1 |
| 460 VOLT CONNECTION | |
|
|
|
|
|
| ||
| L2 (V) |
|
|
|
| CONNECT STRAP TO | |
|
| S1 |
|
| HIGH (H4) (AS SHOWN) | ||
|
|
|
|
| |||
|
|
|
|
| 230 VOLT CONNECTION | ||
|
| POWER SWITCH | 250A | 251A | |||
|
|
|
| CONNECT STRAP TO | |||
| H4 | H3 | H2 | MID (H3) |
| ||
L1 (U) |
|
|
| A | 251 | 208 VOLT CONNECTION | |
|
|
| C1 | ||||
|
| MID |
| CONNECT STRAP TO | |||
C5 |
|
|
|
| |||
HIGH |
| LOW | C2 |
| LOW (H2) |
| |
C4 |
|
|
|
| |||
|
|
|
|
|
|
| |
L2 (V) |
|
| 250 | C3 |
|
|
|
| COM |
| H1 |
|
| ||
|
|
|
|
|
| ||
GROUND | RECONNECT PANEL |
|
|
|
| ||
|
|
|
| POWER FACTOR |
|
| |
|
|
|
| CAPACITORS | X5 | 267 | |
|
|
|
|
| S |
STICK
TIG
MODE
316C
319
BALANCE
R2
|
|
|
|
311A | 322 |
313C
314 | 320 |
|
| 321 | 316C | 316B | 315 |
|
| 316B |
| 313B |
| ||
LOCAL | MAXIMUM | ||||||
|
|
| OUTPUT | ||||
|
|
|
|
| |||
|
|
|
|
| R1 |
| |
| 317 | 316 | 316A | 311A | 311 | 312 |
|
REMOTE |
|
|
|
|
|
|
POST FLOW
R3
|
| 313A |
316A | 318 | 313 |
304A | 5 |
306 | 6 |
311
1
L6 312
2
313
3
314
4
315
5
316
6
317
7
318 8
319
9
320
10
321
11
322
12
J9
J6 1
W 221
2
R 222
L4
|
| L12 |
| 1 | G1 |
| 2 | G3 |
| 3 | G4 |
| 4 | |
J4 | 5 | G2 |
6 | 217 | |
| 7 | 220 |
| 8 | 218 |
| 9 | |
| 10 | 216 |
216
G1
218
G2
217
X1
SCR1 (+)
POS
SCR2
W 221
R 222
L1
FRONT GANG
|
|
| H2 (208V) |
| 63.5VAC |
| ||
|
| TO GROUND PER | H3 (230V) |
| F | X6 | 268 | |
|
|
|
| |||||
|
| NATIONAL | H4 (460V) |
| S | X3 | 231 | |
|
| ELECTRICAL CODE |
| X9 | S | 115VAC | 231A | |
|
|
| 201 |
| F |
| 231B | |
|
|
| 18VAC |
| X4 | 232 | ||
|
|
| 204 |
| ||||
|
|
|
| X10 | F |
|
|
|
X1 |
|
|
|
|
| X1 |
| |
|
|
|
|
| S |
| ||
|
|
| W209 | X7 | S | 78VAC |
| |
X1 |
|
| 20VAC |
| ||||
|
| R210 | F |
| X13 |
| ||
|
|
| X8 | F |
| |||
|
|
|
| X2 | 223 | |||
|
|
|
| T1 | ||||
|
|
|
|
|
|
| ||
POLARITY SWITCH MICRO SWITCH |
|
|
|
|
| |||
|
|
|
|
|
| |||
AC | OPEN |
|
|
|
|
|
| |
DC+ | CLOSED |
|
|
|
|
|
| |
DC- | CLOSED | 232 |
|
|
|
|
|
PRECISION
| (STICK) | (AUTO BAL) | (REMOTE) |
| (P. FLOW) | (THERMAL) | ||||
+ R - | + G - | + G - | + G - | + | Y | - | ||||
B | W | B | W | B | W | B | W | B |
| W |
| 331 |
| 332 |
| 333 |
| 334 |
| 335 |
|
331 | W | 1 | |
B | 6 | ||
| |||
332 | W | 2 | |
B | 7 | ||
| |||
333 | W | 3 | |
B | 8 | ||
| |||
334 | W | 4 | |
B | 9 | ||
| |||
335 | W | 5 | |
B | 10 | ||
|
L7
1
3
2
J10
J7
| 1 | 252 | |
| 9 | 253 | |
| 2 | 269 | |
| 10 | 270 | |
| 3 | 271 | |
| 11 | 220B | |
J11 | 6 | 265 | |
12 | 266 | ||
| |||
| 5 | 262 | |
| 13 | 263 | |
| 4 | 213 | |
| 14 | 214 | |
| 7 | 201 | |
| 15 | 204 |
G3
220
220A
G4
L13
| B | D |
| D2 |
| REAR GANG |
|
|
| CB1 | C8 | 115VAC | ||
|
|
|
|
|
| C9 | ||||||||
SCR3 |
|
|
|
|
| H | S2A | NO |
|
|
| 15A |
|
|
| E | A |
|
|
| NC |
|
|
| 233 |
| |||
224 |
|
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
|
| 231 | ||||||
| F |
|
| NEG | G |
|
|
|
|
|
| 233B | ||
|
| C |
|
|
|
| 266A |
|
|
| 4 | 8 |
| |
SCR4 | D1 |
| 286 | 228 | 265A |
|
| 262 | 233ACR4 2 | 6 |
| |||
| POS |
|
|
|
|
|
| 0 | CR4 | 1 |
|
| N.D. | |
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
| B |
| X2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
| S2 |
|
|
|
| 265 | 266 |
| 263 |
|
| 234 | SV2 |
|
|
|
|
|
|
|
|
|
|
| ||||
NEG |
| POLARITY |
| 253 |
| (REAR VIEW, SHOWN |
|
|
|
|
|
| WATER VALVE | |
252 | SWITCH |
|
|
|
|
|
|
|
| (OPTIONAL) | ||||
|
| IN AC POSITION) |
|
|
|
|
|
|
|
TIG 375
| ADVANCED CONTROL PANEL |
| |
FREQ | ON TIME | BACKGROUND | DOWN SLOPE |
R9 | R10 | R11 | R12 |
5
4
6
J3 |
8 | W209 |
16 | R210 |
225
4
|
| R7 | 271A | BACKGROUND |
|
|
|
| 228 |
| RECTIFIER | R8 |
|
|
| 271 | 269 | 267 | ||
| 225A |
| ||||
|
|
|
| 268 | ||
224 |
|
|
|
| ||
4 | 7 | 270 |
| 262 |
| |
|
|
|
|
|
|
C1,C2,C3 | POWER FACTOR CAPACITORS, 60/460 |
C4,C5 | |
C6 | HIGH VOLTAGE CAPACITOR, .0015/12kV |
C7 | PHASE SHIFT CAPACITOR, 15uF/250VAC |
C8,C9 | HIGH FREQ PROTECTION CAPACITORS, .22/400 |
CB1 | CIRCUIT BREAKER, 15 AMP |
CR2,CR3 | 120V AC RELAY COIL |
CR4 | 12V DC RELAY COIL |
D1 | FREE WHEELING DIODE |
|
|
| 401C |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
401B | 402 | 403 |
| 401D | 405 | 406 | 408 | 409 | 410 |
|
| 407 | 401D |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| L10 |
|
|
401A | 401B | ON |
| 404 | (PULSE ON) |
|
|
|
|
|
|
|
|
| ||||
411 |
| 401 |
|
| - | G + | B |
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
| W |
|
|
|
|
|
|
|
|
|
|
|
|
| OFF |
|
|
|
|
|
|
|
|
|
|
|
|
| |||
TRIGGER |
| PULSE |
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 4 | J5A |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 5 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 6 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| L9 | 8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| PROTECTION PCB |
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
| A |
| A |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| B |
| B |
|
|
|
|
|
|
|
|
| 1 |
| 1 |
|
|
|
| C |
| C |
|
|
|
| A | 4 |
|
|
| 2 |
| 2 |
|
|
|
| D |
| D |
|
| L8 |
| B | 1 |
|
| J23 | 3 |
| 3 |
|
|
|
|
|
|
|
| C | 2 |
| J22 | 4 |
| 4 |
| ||||
|
|
| E |
| E |
|
|
|
|
|
|
| ||||||
10K |
|
|
|
|
|
|
| D | 3 |
|
|
| 5 | N.A. | 5 | J5 | ||
AT MINIMUM |
|
| F |
| F |
|
|
|
| E | 6 |
|
|
| 7 |
| 7 |
|
OPTIONAL |
|
|
|
|
|
|
| F | 5 |
|
|
| 6 |
| 6 |
| ||
| REMOTE |
|
|
|
|
|
|
|
| 8 |
| 8 |
| |||||
REMOTE |
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
| TM |
| RECEPTACLE |
|
|
|
|
|
|
|
|
|
|
|
| |||
AMPTROL |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 | 03/3 | 4 | 5 | 6 | 7 | 8 | 9 10 | |
| 09/ |
|
|
|
|
|
| |
| 20 |
|
|
|
|
|
|
|
40102 |
|
| 1 |
|
|
| PCB | |
402 |
|
| 2 |
|
|
| ||
403 |
|
| 3 |
|
|
| ||
404 |
|
| 4 |
|
|
| OPTION | |
405 |
|
| 5 |
|
|
| ||
406 |
|
| 6 |
|
|
| ||
407 |
|
| 7 |
|
|
| ||
408 |
|
| 8 |
|
|
| ||
409 |
|
| 9 |
|
|
| ||
410 |
|
| 10 |
|
|
| TIG | |
411 |
|
| 11 |
|
|
| ||
W |
|
| 12 |
|
|
| ||
| J1 |
|
|
|
|
|
| |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 10 |
|
|
|
| J2 |
|
|
|
N.B.
|
|
|
|
|
|
| CR2 | OCV BOOST | |
|
|
|
|
|
|
| 7 | ||
|
|
|
|
|
|
| RECTIFIER | ||
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
| 227 | R14 | 226 |
|
|
| CR3 |
| AC BOOST | 227A | |||
|
| 3 |
| B | CR2 A | ||||
|
| 9 | 258 | ||||||
|
|
|
| ||||||
|
| 256 |
|
|
|
| 231C | 231B |
|
|
| CR2 |
|
|
|
| FAN | ||
|
| 3 | 9 | 257 |
| CR3 |
| ||
|
|
| 260A | FAN | |||||
|
| 255 |
|
| DC BOOST | ||||
|
|
|
|
| B |
| A |
|
|
|
|
|
|
|
|
| 260 |
|
|
|
|
|
|
| 233A |
|
|
| |
|
|
|
|
| GAS VALVE | SV1 | |||
|
|
|
|
|
|
| 235 | ||
|
|
|
|
|
|
| 231D |
| |
|
|
|
|
|
|
| 231E |
| |
|
|
|
|
|
|
|
|
| |
|
|
| L11 |
|
|
|
|
|
|
| 1 | 256 |
|
|
|
| 115VAC | S |
|
| 2 | 260 |
|
|
|
| T2 |
| |
J12 | 3 | 235 |
|
|
|
|
|
| |
| 5 | 255 |
|
|
|
|
|
|
|
| 6 | 236 |
|
|
|
|
|
|
|
| 4 | 233A |
|
|
|
|
|
|
|
|
|
|
|
|
|
| 237 | F |
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
| 236 | R5 | C7 |
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
| 236B |
|
|
|
| CR3 |
|
|
|
|
| 263 |
|
|
|
|
|
|
| 201 | |
|
|
|
|
|
| 220B |
| 204 |
|
|
| 223 |
|
|
| W209 | |
|
|
|
|
| 220A |
| R210 | |
|
|
|
|
|
| 220C |
|
|
8 | 5 |
|
|
|
|
|
|
|
CR3 |
|
| 220C |
|
|
|
|
|
|
|
|
|
| 214 | 212 | 212 | |
|
|
|
|
|
| |||
|
|
|
|
| S |
|
| S1A |
231F 231E |
|
|
|
|
|
|
| MICRO- |
| 233A | 231A | C |
| 213 |
| 215 SWITCH | |
|
| TRANSFORMER |
|
| ||||
|
| BYPASS/ | PRIMARY | TRANSFORMER |
| |||
|
| THERMOSTAT |
| |||||
|
| STABILIZER |
| SECONDARY |
| |||
|
|
| THERMOSTAT |
| ||||
|
|
|
|
| PC BOARD |
|
| |
|
|
|
|
|
|
| 223 | |
|
|
|
|
|
|
|
| |
|
|
|
|
|
| 231B | ||
| R13 INTENSITY |
|
|
|
| 233A | ||
| 238A |
|
| E | F |
|
| 231A |
| 240 |
|
|
|
| |||
|
|
|
|
|
|
| ||
L2 | 238 | C6 |
|
|
|
|
|
|
| T3 |
| R6 |
|
|
| ||
SPARK |
|
|
|
|
|
| ||
GAP |
|
|
|
|
| N.A. CONNECTION IS PIN TO PIN BETWEEN J23 AND J5. | ||
|
|
|
| 284 | 285 | |||
L3 | 239 |
|
| N.B. ROBOTIC INTERFACE CONNECTION. |
| |||
|
|
|
| N.C. DISPLAY TOGGLE SHOWN IN MIN AMP POSITION. | ||||
|
|
|
|
|
| N.D. PLUGS INTO LOWER SWITCHED RECEPTACLE. | ||
|
|
|
| FRONT | WORK |
|
|
|
|
|
|
| ELECTRODE |
|
|
| |
ARC STARTER AS’BLY |
|
|
|
|
| |||
|
|
| REAR |
|
|
|
|
|
|
|
| ELECTRODE |
|
|
|
|
D2 | BACKGROUND DIODE |
|
|
|
|
|
| |||||||
L1 | OUTPUT INDUCTOR (CHOKE) |
|
|
| ||||||||||
L2,L3 | HIGH FREQ INDUCTORS |
|
|
|
|
|
| |||||||
L4 | RF TOROID CHOKES |
|
|
|
|
|
| |||||||
R1 | OUTPUT CONTROL POTENTIOMETER, 10K | |||||||||||||
R2 | BALANCE CONTROL POTENTIOMETER, 10K | |||||||||||||
R3 | POST FLOW POTENTIOMETER, 10K |
|
|
| ||||||||||
R4 | MIN OUTPUT POTENTIOMETER, 10K |
|
|
| ||||||||||
R5 | PHASE SHIFT RESISTOR, 200/100 |
|
|
| ||||||||||
R6 | HOLDING RESISTOR, 50/225 |
|
|
| ||||||||||
R7 | RESISTOR, 20/100 |
|
|
|
|
|
|
| ||||||
R8 | RESISTOR, 5/50 |
|
|
|
|
|
|
| ||||||
R9 | FREQ CONTROL POTENTIOMETER, 10K |
|
|
| ||||||||||
R10 | ON TIME CONTROL POTENTIOMETER, 10K | |||||||||||||
R11 | BACKGROUND POTENTIOMETER, 10K |
|
|
| ||||||||||
R12 | DOWN SLOPE POTENTIOMETER, 10K |
|
|
| ||||||||||
R13 | HIGH FREQ INTENSITY CONTROL, 3/25 |
|
|
| ||||||||||
R14 | RESISTOR, 8/300 |
|
|
|
|
|
|
| ||||||
S1 | INPUT POWER SWITCH |
|
|
|
|
|
| |||||||
S1A | MICROSWITCH ON INPUT POWER SWITCH | |||||||||||||
S2 | POLARITY SWITCH |
|
|
|
|
|
| |||||||
S2A | MICROSWITCH ON POLARITY SWITCH |
|
|
| ||||||||||
SCR1,2,3,4 | MAIN POWER SCR’S |
|
|
|
|
|
| |||||||
SV1 | GAS SOLENOID VALVE, 115VAC |
|
|
| ||||||||||
SV2 | WATER SOLENOID VALVE, 115VAC (OPTIONAL) | |||||||||||||
T1 | MAIN TRANSFORMER |
|
|
|
|
|
| |||||||
T2 | HIGH VOLTAGE TRANSFORMER |
|
|
| ||||||||||
T3 | HIGH FREQ TRANSFORMER |
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| LEAD COLORING CODE: | COMPONENT VALUE | ||||||||||||
| UNITS: |
|
|
| ||||||||||
|
|
|
|
| ||||||||||
|
| RESISTORS: |
| |||||||||||
|
| OHMS/WATTS |
| |||||||||||
| CAPACITORS: |
| ||||||||||||
|
|
|
|
|
|
| MFD/VOLTS |
| ||||||
| CONNECTOR PIN NUMBERS: |
|
|
| ||||||||||
| 1 2 3 |
| 7 |
| EXAMPLE: THIS IS PIN 7 |
| ||||||||
|
|
| 0F CONNECTOR J5 |
|
|
| ||||||||
|
|
|
|
|
| |||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 8 |
| J5 | 14 |
| 1 2 3 |
|
| 8 |
|
| |||
|
|
|
|
|
| |||||||||
|
|
|
| LATCH |
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
| |||
| VIEW OF CONNECTOR ON PC BOARD |
|
|
| ||||||||||
| ELECTRICAL SYMBOLS PER E1537. |
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
WIRING DIAGRAM ENHANCED DIAGRAMS
G4047
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.