Lincoln Electric 300 D manual Electronic Idler Troubleshooting Guide

Models: 300 D

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ELECTRONIC IDLER TROUBLESHOOTING GUIDE

E-3

TROUBLESHOOTING

E-3

 

 

 

 

ELECTRONIC IDLER TROUBLESHOOTING GUIDE

 

With Idler Control Switch in the Auto Position,

Engine Will Not Return to Low Idle in Approximately 15 Seconds

After Welding and Auxiliary Loads are Removed

Set Idler Control Switch

to the Auto Position

Check for Continuity through Idler

Control Switch

 

 

Open

 

 

 

Closed

 

 

 

 

 

 

 

 

 

Measure DC Voltage on

Replace Idler

 

 

Idler Solenoid Coil

Control Switch

 

 

 

 

 

 

 

 

 

 

12 VDC

0 VDC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check Continuity of

Check for Jamming

 

 

Reed Switch in Weld Circuit

of the Idler Solenoid

 

 

 

 

 

 

Mechanism or a broken

 

 

 

 

 

 

 

 

 

 

 

 

Return Spring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Open

Closed

 

 

 

 

 

 

 

1. Check Wiring in

Replace Reed

Idler Solenoid

Switch

Circuit

 

 

2.Replace Idler P.C. Board

Manual backgroundCAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

CLASSIC 300D

Page 25
Image 25
Lincoln Electric 300 D manual Electronic Idler Troubleshooting Guide