E-4

 

 

TROUBLESHOOTING

 

E-4

 

 

 

 

 

 

 

 

 

 

 

 

ELECTRONIC IDLER TROUBLESHOOTING GUIDE

 

 

 

 

 

 

 

 

 

 

 

 

Engine Will Not

 

Return To Idle

 

 

 

 

 

 

 

 

 

 

In Approximately 15 Seconds

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Set Idler Control

 

Switch To The

 

 

 

 

 

 

 

 

 

 

Auto Position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Remove All Weld and Auxiliary

 

 

 

 

 

Power Loads

 

 

 

 

 

 

 

 

 

 

 

 

Check Continuity

 

 

of Idler Control

 

 

 

 

 

 

 

 

 

 

Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Good

 

 

 

 

Continuity

Open

1.

Reed switch in weld circuit may be stuck

Replace Switch

 

 

closed.

 

 

2.

Check continuity of idler solenoid coil

 

 

 

 

(8.5 - 9.0 ohms) & leads.

 

 

3.

Check ground connections in idle circuit.

 

 

4.

Replace P.C. Board

 

 

Engine Will Not Pick Up Speed When:

The Arc Is Struck

The Auxiliary Power Load Is Turned On

Reed Switch In Weld Circuit

Defective - Will Not Close

To Check: Short The Red Lead

On P.C. Board To Welder Frame

 

Engine Picks Up Speed

Engine Does Not Pick

 

 

Up Speed

1.

Check for break in Red

Replace PC Board

 

lead and repair.

 

2.

Replace reed switch in

 

 

weld circuit.

 

Power Load Too Small

Try Load Above 150 Watts

Engine Does Not Pick Up Speed

Check Connections And Continuity

Of Current Transformer

Replace P.C. Board

CLASSIC II DEUTZ

Page 19
Image 19
Lincoln Electric IM553-C manual Electronic Idler Troubleshooting Guide, Good