Pipe/Gouge Range Switch And Weld Mode Switch Test Procedure - Lincoln Electric Fleet 650 Service Manual

LINCOLN ELECTRIC

PIPE/GOUGE RANGE SWITCH AND WELD MODE SWITCH 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 Pipe/Gouge Range Switch and Weld Mode Switch are functioning properly.
MATERIALS NEEDED
3/8" Nutdriver
Volt/Ohmmeter
Wiring Diagram
TEST PROCEDURE
1. Turn off the engine on the Fleet 650 machine.
2. Perform the Case Cover Removal Procedure.
3. Perform the Chopper Module Capacitor Discharge Procedure.
4. Locate the 'PIPE/GOUGE RANGE' and 'WELD MODE' switches. See Figure F.26. See Wiring Diagram.
5. Using a 3/8" nutdriver, remove the four screws securing the upper control panel to the machine.
See Figure F.26.
6. Lower the upper control panel to gain access to the switches.
7. Label and disconnect leads 218, JP2 and 217 from the terminals of the 'PIPE/GOUGE RANGE' switch.
See Figure F.27. See Wiring Diagram.
8. Using a volt/ohmmeter, perform the resistance tests outlined in Table F.7. See Figure F.27. See
Wiring Diagram.
9. If any of the tests fail, the 'PIPE/GOUGE RANGE' switch may be faulty.
10. If faulty, perform the Pipe/Gouge Range Switch Removal And Replacement Procedure.
11. Connect leads 218, JP2 and 217 to the terminals of the 'PIPE/GOUGE RANGE' switch. See Wiring
Diagram.
12. Label and disconnect leads 220, JP1, JP2 and 222 from the terminals of the 'WELD MODE' switch.
See Figure F.27. See Wiring Diagram.
13. Using a volt/ohmmeter, perform the resistance tests outlined in Table F.8. See Figure F.27. See
Wiring Diagram.
14. If any of the tests fail, the 'WELD MODE' switch may be faulty.
15. If faulty, perform the Weld Mode Switch Removal And Replacement Procedure.
16. Connect leads 220, JP1, JP2 and 222 to the terminals of the 'WELD MODE' switch. See Wiring
Diagram.
Fleet™ 650 Service Manual
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