Lincoln Electric IM727 Welding System User Manual


 
F-1
WIRING DIAGRAMS
SAE-400 SEVERE DUTY
F-1
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.
SWITCH
PROTECTION
P.C. BOARD
IDLER/ENGINE
J1
+
SWITCH (N.C.)
OIL PRESSURE
THERMOSTART
COLD
TERMINAL
START
B
-
THERMOSTART
5C
B
B
+
GROUND SCREW
TO CONTROL PANEL
B
G
223
W
W
R
4
3
2
5A
1
10
G
225
B
9
8
73
2
B
SOLENOID
226
234
IDLER
REED RELAY
S
R
B
-
FUEL INJECTION PUMP
TEMPERATURE GAGE
4
1
236
SWITCH
B
B
IGNITION
-
TO TOROID
2 CR
STARTING
MOTOR
B
+
FUEL SHUT
GENERAL MAINTENANCE INSTRUCTIONS FOR ENGINE
B
B
235
B
AMMETER
G
5B
238
237
B
229
ALTERNATOR
A
M20609
AND MOTOR DRIVEN ARC WELDING POWER SOURCES.
6
5
IND
233
B
+
+
J2
IGNITER
W
224
222
U
W
B
IDLER
TO FLASHING DIODE
ENGINE HOUR METER
U
220
B
R
WIRING DIAGRAM - SAE-400 PERKINS
G
OFF VALVE
B
G
G
227
221
ENGINE TEMP.
SENSOR
-
PARTS
CAN INJURE
MOVING
maintenance work.
maintenance work unless the maintenance work
Keep hands, hair, clothing and tools away
requires it to be running.
Turn the engine or input power OFF before
Have only qualified personnel perform
WARNING:
from moving parts, and insure all guards or
covers are replaced after servicing.
AS REQUIRED:
DAILY CHECKS:
LEAD COLOR CODE
MAINTENANCE INSTRUCTIONS
B-BLACK OR GRAY
G-GREEN
N-BROWN
R-RED OR PINK
U-BLUE
W-WHITE
Y-YELLOW
Engine oil, coolant, air cleaner and fuel
All equipment in serviceable condition.
Welding cable connections are tight.
strainer are at proper operating level and clean.
Blow dust from machine using clean low pressure air.
Clean commutators or slip rings with fine sandpaper-
NOT EMERY CLOTH. See Operating Manual for instructions.
Replace brushes before the pigtails are within 1/4"of
1/4" of the commutator. See Operating Manual for instructions.
WARNING
Uncontrolled release of door restraint cords can cause injury.
Keep secure hold of cord, and keep face away
from cord when hooking or releasing hook.
G
CASE OF TEMPERATURE GAUGE
IS GROUND ON OLDER MACHINES