Lincoln Electric IM747 SA 250 - Manual (Page 24)

E-5 TROUBLESHOOTING
SA-250
E-5
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
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.
CAUTION