Lincoln Electric SVM 110-A service manual Engine Problems

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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 will not idle down to low	1.	Make sure the Idler switch (S5)	1. With the Idler switch (S5) in the
speed. Machine has normal weld		is in the “Auto” position.	“AUTO” position and the engine
output and auxiliary power.	2.	Make sure there is NOT an	running, check for the presence
			of 12VDC at	leads #224D to
		external load on the weld termi-
			#214, located at the Idler sole-
		nals nor the auxiliary power
			noid. If 12VDC is present and
		receptacles.
			the idler solenoid is not activat-
			ing, then the solenoid may be
			faulty or there is a mechanical
			restriction preventing		it from
			functioning.
			2. If there is NOT 12VDC at leads
			#224D to #214, then test for
			12VDC from lead #224D to
			ground (lead #5). See Wiring
			Diagram. If 12VDC is present,
			then check lead #214 for conti-
			nuity (zero ohms) from the idler
			solenoid to the printed circuit
			board plug 8J1. Also check the
			idler switch (S5) and the associ-
			ated leads.	See	Wiring
			Diagram. If the above are OK,
			then the printed circuit board
			may be faulty. Replace.
			3. If there is NOT 12VDC from lead
			#224D to ground (lead #5), then
			check the wiring to the engine
			terminal block connection. See
			Wiring Diagram.

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.

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