Lincoln Electric SVM175-A service manual Installation, Rottle Adjustment Test

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F-20	INSTALLATION					F-20
		TROUBLESHOOTING GUIDE
detailed in the beginning of this manual.
Observe Safety Guidelines
PROBLEMS	POSSIBLE AREAS OF		RECOMMENDED
(SYMPTOMS)	MISADJUSTMENT(S)		COURSE OF ACTION
	ENGINE AND IDLE PROBLEMS
The engine will not go into high idle	1. Check that the welding cables		1.	The weld control PC board may
when attempting to strike an arc, or	and the auxiliary power lead			be defective.
when a load is applied to any of the	connections are tight.
auxiliary power receptacles.
Welding and auxiliary outputs are
normal when the idle switch is in
the “HIGH IDLE” position.
The engine goes to low idle, but will	1. Make sure there are no external		1.	The idler solenoid linkage may
not stay at low idle.	loads on either the weld termi-			be damaged or out of adjust-
	nals or the auxiliary receptacles.			ment. Make sure the solenoid
	2. Check that the welding cables			plunger is able to fully seat
	and the auxiliary power lead			against the internal stop of the
	connections are tight and that		2.	solenoid coil assembly.
	the insulation is undamaged.			The low idle RPM may be too
				low.	Perform the	Engine
				rottle Adjustment Test.
			3. The		solenoid hold coil power
				circuit may be faulty. Check
				wiring and connections on lead
				#210A and lead #215.
			4. The weld control PC board may
				be defective.

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 1-888-935-3877.

RANGER 305D