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Fleet 650
Lincoln Electric Fleet 650 User Manual
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SERVICE MANUAL
Fleet
™
650
SVM289
| Issue D
ate 18-Mar
© Lincoln Global, Inc. All Rights Reserved.
For use with machines having Code Numbers:
Fleet
™
650: 12512
2
Table of Contents
Table of Contents
6
Fleet™ 650
6
Service Manual
6
Troubleshooting & Repair
8
How to Use Troubleshooting Guide
8
Pc Board Troubleshooting Procedures
9
Troubleshooting Guide
10
Test Procedures
21
Case Cover Removal and Replacement Procedure
21
Chopper Module Capacitor Discharge Procedure
24
Brush and Slip Ring Service Procedure
26
Flashing Diode (D1) & Field Diode (D2) Test Procedure
28
Engine Shutdown Relay Test Procedure
30
Engine Alternator Test Procedure
33
Rotor Resistance and Ground Test Procedure (Static)
35
Rotor Resistance and Ground Test Procedure (Dynamic)
37
Rotor Voltage Test Procedure
38
Flashing Voltage Test Procedure (Engine Not Running)
39
Stator Voltage Test Procedure
40
Output Rectifier Bridge Test Procedure
42
Chopper Module Boards Function Test Procedure
45
Chopper Module Boards Resistance Test Procedure
49
Weld Control Board Pwm Gate Signal Test Procedure
52
Weld Control Board Feedback Test Procedure
54
Output Control and Arc Control Potentiometer Test Procedure
57
Choke Test Procedure
60
Pipe/Gouge Range Switch and Weld Mode Switch Test Procedure
62
Thermostat Test Procedure
65
Removal and Replacement Procedures
68
Flashing Diode (D1) & Field Diode (D2) Removal and Replacement Procedure
68
Front Panel Removal and Replacement Procedure
70
Output Rectifier Bridge Removal and Replacement Procedure
74
Chopper Module Boards Removal and Replacement Procedure
77
Weld Control Board Removal and Replacement Procedure
80
Choke Removal and Replacement Procedure
82
Pipe/Gouge Range Switch Removal and Replacement Procedure
86
Weld Mode Switch Removal and Replacement Procedure
88
Thermostat Removal and Replacement Procedure
90
Fuel Tank Removal and Replacement Procedure
92
Rotor and Stator Removal and Replacement Procedure
94
Retest after Repair
99
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Lincoln Electric Fleet 650 Specifications
General
Frequency
50/60 Hz
Polarity
DC
Rated Output
650A/44V
Duty Cycle
60%
Weight
196 kg
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