Electronic Idler Troubleshooting Guide - Lincoln Electric CLASSIC IM514-A Operator's Manual

E-6

ELECTRONIC IDLER TROUBLESHOOTING GUIDE

Light Off
If Oil Light is O.K., Replace Oil
Pressure Switch
The Arc is Struck
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
When Arc is Struck
1. Replace Reed Switch
in Weld Circuit.
TROUBLESHOOTING
Engine Will Not Return to Idle
in Approximately 15 Seconds
Set Idler Control Switch
to the Auto Position
Check to See Whether Oil Pressure
Light is On and Alternator is Charging
Engine Will Not Pick Up Speed When:
Engine Does Not Pick
Up Speed
Replace P.C. Board
CLASSIC I
LINCOLN
®
ELECTRIC ELECTRIC
Light On
Check Continuity of Idler
Control Switch
Continuity Good
1. Reed switch in weld circuit
may be stuck closed.
2. Check continuity of idler
solenoid coil (25 ohms).
3. Replace P.C. Board.
The Auxiliary Power Load is Turned On
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
E-6
Open
Replace Switch