Stator Voltage Test Procedure - Lincoln Electric Cross Country 300 Service Manual

LINCOLN ELECTRIC
STATOR VOLTAGE TEST PROCEDURE
Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized
repairs performed on this equipment may result in danger to the technician or machine operator and will
invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety
notes and precautions detailed throughout this manual. If for any reason you do not understand the test
procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department
for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This test will determine if the Stator is able to produce correct voltage from its winding. It will only yield
meaningful data if the Engine high idle speed is correct (1860 to 1890 RPM), and approximately 160 VDC is
present across the Rotor Slip Rings.
MATERIALS NEEDED
Volt/Ohmmeter
Wiring Diagram
TEST PROCEDURE
1. Turn off the engine on the Cross Country 300 machine.
2. 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. 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:
3. Connect the volt/ohmmeter probes to either of the 120 VAC receptacles. See Figure F.47. See
Wiring Diagram.
4. Start the engine and run at high idle (1860 – 1890 RPM).
5. Check the AC voltage reading. It should read between 115 and 132 VAC.
To test 240 VAC auxiliary winding:
6. Connect the volt/ohmmeter probes to either of the 240 VAC receptacles. See Figure F.47. See
Wiring Diagram.
7. Start the engine and run at high idle (1860 – 1890 RPM).
8. Check the AC voltage reading. It should read between 230 and 264 VAC.
9. If these voltage readings are not within the specified 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.
Cross Country™ 300 Service Manual
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