Lincoln Electric SVM 113-A service manual Engine Throttle Adjustment

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F-10						F-10
TROUBLESHOOTING & REPAIR
Observe Safety Guidelines			TROUBLESHOOTING GUIDE
detailed in the beginning of this manual.
PROBLEMS	POSSIBLE AREAS OF		RECOMMENDED
(SYMPTOMS)	MISADJUSTMENT(S)		COURSE OF ACTION
	ENGINE PROBLEMS
Engine idles down to low idle but	1. Remove any external load on		1. The engine low idle RPM may
will not stay at low idle.	the welder terminals or auxiliary		be	set	too low.	Perform the
	power receptacles.		Engine		Throttle	Adjustment
	2. The engine low idle RPM may		Test.
	be set too low.	Contact your	2. With the idler control switch in
	local Lincoln	Electric Field	the “AUTO” position and all
	Service Facility.		external loads removed, check
			for 12VDC at leads #208 and
			#209. See Wiring Diagram. If
			the 12VDC is present and the
			solenoid does not stay activat-
			ed, the solenoid may be faulty.
			Replace.
Engine will not go to high idle when	1. Check work and electrode		1. Locate plug J2 on the control
attempting to weld or when the	cables for loose or faulty con-		board.		With a load on the
auxiliary power is loaded. Welding	nections.		machine, measure the AC volt-
output and auxiliary power output	2. The mechanical linkage be-		age across the two leads in plug
is normal when idler control switch			J2.	Normal is 1.0 VAC mini-
	tween the solenoid and engine
is in the “HIGH” position.			mum.		If the correct voltage is
	may be stuck.
			present, the idler P.C. board
			may be faulty. Replace.
			2. If the correct voltage is NOT
			present at Plug J2 leads, check
			the continuity of the leads from
			the current transformer to plug
			J2.	See Wiring Diagram.
			3. The current transformer may be
			faulty. Replace.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.

WELDANPOWER 125