Table Of Contents; Fleet™ 400; Service Manual - Lincoln Electric Fleet 400 Service Manual

LINCOLN ELECTRIC Fleet™ 400 Service Manual

Fleet™ 400

Service Manual

Last update: 2018/04/01
FLEET™ 400 ................................................................................................................................................... 1
Service Manual ..................................................................................................................................................... 1
Troubleshooting & Repair ................................................................................................................................. 3
HOW TO USE TROUBLESHOOTING GUIDE ..................................................................................................... 3
PC BOARD TROUBLESHOOTING PROCEDURES .............................................................................................. 4
Troubleshooting guide ....................................................................................................................................... 5
Test Procedures ................................................................................................................................................. 15
CASE COVER REMOVAL AND REPLACEMENT PROCEDURE.......................................................................... 15
CHOPPER MODULE CAPACITOR DISCHARGE PROCEDURE .......................................................................... 18
BRUSH AND SLIP RING SERVICE PROCEDURE .............................................................................................. 20
FLASHING DIODE (D1) & FIELD DIODE (D2) TEST PROCEDURE .................................................................... 22
ENGINE SHUTDOWN RELAY TEST PROCEDURE ........................................................................................... 24
ENGINE ALTERNATOR TEST PROCEDURE .................................................................................................... 27
ROTOR RESISTANCE AND GROUND TEST PROCEDURE (STATIC) ................................................................. 29
ROTOR RESISTANCE AND GROUND TEST PROCEDURE (DYNAMIC) ............................................................ 31
ROTOR VOLTAGE TEST PROCEDURE ........................................................................................................... 32
FLASHING VOLTAGE TEST PROCEDURE (ENGINE NOT RUNNING) ............................................................... 33
STATOR VOLTAGE TEST PROCEDURE .......................................................................................................... 34
OUTPUT RECTIFIER BRIDGE TEST PROCEDURE ............................................................................................ 36
CHOPPER MODULE BOARD FUNCTION TEST PROCEDURE .......................................................................... 39
CHOPPER MODULE BOARD RESISTANCE TEST PROCEDURE ........................................................................ 43
WELD CONTROL BOARD PWM GATE SIGNAL TEST PROCEDURE ................................................................. 46
WELD CONTROL BOARD FEEDBACK TEST PROCEDURE ............................................................................... 48
OUTPUT CONTROL AND ARC FORCE POTENTIOMETER TEST PROCEDURE .................................................. 51
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