Section f- troubleshooting and repair, Warning – Lincoln Electric LN-25 SVM114-C User Manual

Page 39

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TABLE OF CONTENTS

- TROUBLESHOOTING AND REPAIR SECTION -

LN-25™

Troubleshooting and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section F

How to Use Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-2

PC Board Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . .

F-3

Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-4

Test Procedures

Gas Solenoid Valve and Solenoid PC Board Test . . . . . . . . . . . . . . .

F-7

Gas Solenoid Valve and Control PC Board Test . . . . . . . . . . . . . . . .

F-13

Hall Effect Module Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-19

Wire Drive Motor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-23

Contactor & Contactor PC Board Test . . . . . . . . . . . . . . . . . . . . . . . .

F-25

Component Replacement Procedures

Contactor PC Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . .

F-31

Control PC Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-35

Contactor Replacement (codes below 10500) . . . . . . . . . . . . . . . . .

F-39

Contactor Replacement (codes above 10500) . . . . . . . . . . . . . . . . .

F-41

Gas Solenoid Valve and/or Solenoid

PC Board (If Present) Replacement . . . . . . . . . . . . . . . . . . . . . . . .

F-43

Drive Motor And Gearbox Replacement and

Access to Hall Effect Module

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-47

Retest After Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

F-51

Section F

Section F

WARNING

ELECTRIC SHOCK can kill.

• Never work on the inside of the machine without removing the

input power. You can receive a life threatening electrical shock if

you fail to do this. Only qualified technicians should perfor m

i n s t a l l a t i o n , m a i n t e n a n c e, a n d t r o u bl e s h o o t i n g wo r k o n t h e

machine.

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