Lincoln Electric SVM101-B service manual Feeding Problems

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-6	TROUBLESHOOTING & REPAIR							F-6
TROUBLESHOOTING GUIDE					Observe Safety Guidelines
		detailed in the beginning of this manual.
PROBLEMS		POSSIBLE AREAS OF	RECOMMENDED
(SYMPTOMS)		MISADJUSTMENT(S)	COURSE OF ACTION
		FEEDING PROBLEMS
No output or reduced output the first		Check input voltages, fuses, and	Check continuity of 3-amp slow
time power is applied to machine.		input voltage reconnect procedures.	blow fuse located on reconnect
		See Installation section.	panel.
		If high input (380 VAC or higher)	See Input			Filter	Capacitor
		voltage is applied. Capacitors may	Conditioning			in this section
		need conditioning.
Output turns on momentarily, then		Check input voltages and recon-	1.	See Thermal Protection AC
switches off and repeats cycle.		nection procedures. See Instal-		Trigger Circuit test.
		lation section.	2.	See Overvoltage Protection
		Check output terminal switch S4		DC Trigger Circuit test.
		and/or Remote Trigger Options	3.	See Capacitor Balance				test.
		(i.e., wire feeders, guns, cables,
		etc.).		NOTE: This test is necessary
				only if machine is connected
				for 380 VAC or higher.
			4.	See Switch PC Board test.
			5.	See Snubber Resistor test
Remote output control not function-		Test or replace Output Remote	1.	Test	Local/Remote		Switch S3
ing. Machine performs well on		Control Device		with	ohmmeter. See			Wiring
LOCAL control.				Diagram in Section G.
			2.	Check continuity of local/remote
				circuit. See schematic drawing
				in Section G.

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 1-888-935-3877.

V300-I