Lincoln Electric VANTAGE 400 Service Manual page 100

F-52
STATOR VOLTAGE TESTS (CONTINUED)
FIGURE F.11 RECEPTACLE LEAD LOCATIONS (TYPICAL)
CONTACTOR
CONTROL
REMOTE
CONTROL
2 TIMES THRU FERRITE
LEADS 75A, 76A, & 77A
TEST PROCEDURE
1. Perform the Case Cover Removal procedure.
NOTE: Voltage tests of the 120 and 120/240 VAC
receptacles can be performed by placing the meter
probes directly into the appropriate connection slots
in the front of the receptacles rather than testing at
the lead connections described below. If the meter
probes are not long enough to make contact with the
conductors inside the receptacles, test pins may be
used.
To test the 120 VAC auxiliary winding:
1. Connect the volt/ohmmeter probes to either 120
VAC receptacle as follows.
2. For the upper receptacle, place the probes direct-
ly into receptacle, or connect to leads #3D and
#5A. See Figure F.11. See wiring diagram.
For the lower receptacle, place the probes direct-
ly into the receptacle, or connect to leads #6E
and 5B. See Figure F.11. See wiring diagram.
TROUBLESHOOTING & REPAIR
AMPHENOL 1
C
B
D
L
K
E
M
N
I
F
G
H
KEY
L4
VANTAGE® 400
GROUND
A
120 VAC FOR WIRE FEEDER
J
40 VAC FOR WIRE FEEDER
21 WORK SENSE
3. Start the engine and run it at high idle (1860-1890
RPM).
4. Check the AC voltage reading. It should read
between 115 and 132 VAC.
To test the 240 VAC auxiliary winding:
1. Connect the meter probes to leads #6F and #3E
where they connect to the 120/240VAC recepta-
cle, or insert the probes into the 240 VAC con-
nection slots in the front of the receptacle. See
Figure F.11. See wiring diagram.
2. Start the engine and run it at high idle (1860-1890
RPM).
3. Check the AC voltage reading. It should read
between 230 and 264 VAC.
4. If these voltage readings are not within the spec-
ified limits, check for tripped or defective circuit
breakers, loose connections, or broken wires
between the test points and the stator windings.
If there are no wiring problems, and the circuit
breakers are not tripped or defective, the stator is
defective and should be replaced.
F-52