Lincoln Electric IM769 manual Engine Picks Up Speed Engine Does Not Pick Up

E-7	TROUBLESHOOTING	E-7
	ELECTRONIC IDLER TROUBLESHOOTING GUIDE

With Idler Control Switch in the AUTO Position,

Engine Will Not Pick Up Speed When:

The Arc is Struck The Auxiliary Power Load is Turned ON

Power Load Too Small

Try Load Above 150 Watts

Engine Does Not Pick Up Speed

Current sensor may be defective and not closed.

To Check: Short the Lead from

current sensor to P.C. Board to the

Welder Frame.

Engine Picks Up Speed		Engine Does Not Pick Up
			Speed
1.	Check Idler Circuit
	Wiring and Repair as	1.	Check Continuity of Idler
	Required.		Solenoid Coil (8.5-9.0
			ohms) and Replace as
2.	Replace Current Sensor.		Required.
		2.	Check for Jamming of
			the Idler Solenoid
			Mechanism.
		3.	Check Idler Circuit
			Wiring and Repair as
			Required.
		4.	Replace Idler P.C.
			Board.

N0TE: If the engine will not idle up or down under both weld and auxiliary load, check idler circuit wiring. The direction of leads entering the current sensor may be incorrect.

CAUTION

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.

PIPELINER 200D