Lincoln Electric SVM153-A service manual Perform the Idler Solenoid

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

F-11			F-11
TROUBLESHOOTING & REPAIR
TROUBLESHOOTING GUIDE			Observe Safety Guidelines
	detailed in the beginning of this manual.
PROBLEMS	POSSIBLE AREAS OF	RECOMMENDED
(SYMPTOMS)	MISADJUSTMENT(S)	COURSE OF ACTION
	ENGINE PROBLEMS
The engine will not go to high idle	1. Make sure the auxiliary power	1.	Check the current sensing
when using the auxiliary power.	leads are tight.		toroid for loose or faulty connec-
Auxiliary power is normal when the	2. The automatic idler may not		tions. See the Wiring Diagram.
IDLER switch is in the "HIGH" posi-
	function if the auxiliary power is	2.	Make sure leads #3 and #6A
tion. Automatic idle function works
	loaded to less than 150 watts.		pass through the toroid twice in
properly when the welding termi-
			opposite directions.
nals are loaded.
		3.	The current sensing toroid may
			be faulty.
		4.	The Weld Control PC board
			may be faulty.
The engine will not go to high idle	1. Make sure the welding cables	1.	The Weld Control PC board
when attempting to weld or when	and auxiliary power lead con-		may be faulty.
the auxiliary power is loaded.	nections are tight.	2.	The current sensing toroid may
Welding output and auxiliary power
			be faulty.
outputs are normal when IDLER
switch is in the " HIGH" position.
The machine goes to low idle but	1. Make sure there is NOT an	1.	The idler solenoid linkage may
does not stay at low idle.	external load (auxiliary or weld)		be misadjusted or damaged.
	connected to the Commander	2.	The idler solenoid lead connec-
	500.
			tions may be loose or damaged.
			See the Wiring Diagram.
		3.	Perform the Idler Solenoid
			Test.
		4.	The Weld Control PC board
			may be faulty.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-800-833-9353.

COMMANDER 500