Lincoln Electric SVM148-B Manual Do Utilizador

Troubleshooting & Repair Section .................................................................................Section F

Rotor Resistance Test  ..................................................................................................F-21
Output Rectifier Bridge Test .........................................................................................F-23
Fuel Shutdown Solenoid Resistance Test  ...................................................................F-25
High Speed Solenoid Test ............................................................................................F-27
Engine Throttle Adjustment Test  ..................................................................................F-29
Auxiliary and Field Winding Test ...................................................................................F-33
Rotor Voltage Test  ........................................................................................................F-37
Charging Circuit Test .....................................................................................................F-39

Normal Open Circuit Voltage Waveform (115 VAC Supply) .........................................F-41
Typical DC Weld Output Voltage Waveform (CV Mode High Tap) ................................F-42
Typical DC Weld Output Voltage Waveform..................................................................F-43
Typical AC Weld Output Voltage Waveform..................................................................F-44
Abnormal Open Circuit DC Weld Voltage Waveform ....................................................F-45
Abnormal Open Circuit Weld Voltage Waveform (High CV Mode) ...............................F-46
Normal Open Circuit Weld Voltage Waveform (High CV Mode) ...................................F-47
Normal Open Circuit DC Weld Voltage Waveform .......................................................F-48
Normal Open Circuit AC Weld Voltage Waveform  .......................................................F-49

Brush Removal and Replacement  ...............................................................................F-50
Field Capacitor and/or Rectifier Bridge Removal and Replacement ...........................F-53
Control Board Removal and Replacement  ..................................................................F-56
Output Rectifier Bridge Removal and Replacement.....................................................F-59
Output Capacitor Bank Removal and Replacement.....................................................F-62
Output Contactor Removal and Replacement..............................................................F-64
Stator and/or Rotor Removal and Replacement  .........................................................F-67