Wiring diagrams, Sp-175t wiring diagram – Lincoln Electric IM726 SP-175T User Manual
Page 42
F-1
F-1
WIRING DIAGRAMS
ELECTRICAL SYMBOLS PER E1537
CAVITY NUMBERING SEQUENCE
( COMPONENT SIDE OF BOARD )
539
541
213
GUN TRIGGER
THERMOSTAT
208
5K
WIRE SPEED
R2
(W)
(B)
N.C.
209
214
211
WINDING
24V
AUXILIARY
FAN MOTOR
H2
541
204
203
209
208
539
213
214
1
2
34
LATCH
5
6
78
91
0
12
3
4
5
6
7
89
10
GAS
SOLENOID
CONTROL P.C. BOARD
J1
CR1
H1
H2
LS1
H2
H2
D3
204
204
204
203
203
203
C1
40V
203
204
-
+
GUN CABLE
CONDUCTOR
BLOCK
TO
WORK
T1
N.B.
N.A.
X1
202
X2
S2
SELECTOR
SWITCH
OUTPUT
CHOKE
X4
X5
+
H1
N.A. DIODES D1,D3,D5 & D7 ARE MOUNTED
ON THE OUTSIDE HEATSINK.
D1
D5
D2
D6
D7
D4
D8
X3
X6
204
204
203
203
H2
N.O.
208V/60HZ
H3
230V/60HZ
N.C.
H3
HIGH VOLTAGE
can kill
Only qualified persons should install, use or
service this machine.
Do not operate with covers removed.
Do not touch electrically live parts
Disconnect input power by unplugging power cord before servicing
CUSTOMER VOLTAGE RECONNECTION FOR DUAL VOLTAGE MACHINE
TO EARTH GROUND
PER NATIONAL, LOCAL
OR OTHER APPLICABLE
ELECTRICAL CODES.
G
N.D.
N.D.
211
THERMOSTAT
+
-
MACHINES ARE SHIPPED FROM FACTORY CONNECTED FOR 230V AS SHOWN. TO CONNECT WELDER FOR
208V INPUT. DISCONNECT WELDER FROM INPUT POWER, REMOVE CASE SIDE, REMOVE LEAD MARKED "H1"
FROM CR1. REMOVE TAPE SECURING H3 TO LEAD SLEEVING AND CONNECT H3 TO CR1. INSULATE
UNUSED H1 LEAD FOR 300V WITH ELECTRICAL TAPE AND SECURE TO LEAD SLEEVING. REINSTALL CASE
SIDE BEFORE CONNECTING INPUT POWER. RECONNECTION TO 230V IS REVERSE OF ABOVE PROCEDURE.
SEE INSTRUCTION MANUAL FOR DETAILS.
H1
(230V)
H3
(208V)
LEAD COLOR CODE:
B-BLACK
W-WHITE
(MOUNTED TO
SEC. COIL)
(MOUNTED TO
DIODE HEATSINK)
WIRE
FEED
MOTOR
CIRCUIT
BREAKER
N.B. DIODES D2,D4,D6 & D8 ARE MOUNTED ON THE INSIDE
HEATSINK, WHICH IS CLOSEST TO THE CENTER PANEL.
CASE
GROUNDING
STUD
N.C. COMPONENT VIEWED FROM REAR.
S1
ON-OFF
SWITCH
93,000 f
N.D. BOLTED ALUMINUM CONNECTIONS REQUIRE T12837 JOINT
COMPOUND (DOW CORNING 340) WHEN REATTACHING.
SP-175T WIRING DIAGRAM
M19927
1
2
3
4
J3
LATCH
1
2
3
4
214
211
213
JUMPERED PLUG STANDARD
SPOT/STITCH TIMER OPTIONAL
213A
211
214
J1
J3
4-01
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.
SP-175T