Lincoln Electric SVM192-A Recommended Course Of Action, Troubleshooting And Repair, Problems

F-5 TROUBLESHOOTING AND REPAIR F-5

Observe Safety Guidelines detailed in the beginning of this manual.

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PROBLEMS	POSSIBLE AREAS OF
(SYMPTOMS)	MISADJUSTMENT(S)
	OUTPUT PROBLEMS
No weld output, the auxiliary power 1.	Check the open circuit voltage
(230-115VAC) is operating normal-	(OCV) at the welder output termi-
ly. Engine runs normally.	nals, engine at high idle (3650
	RPM). Normal maximum is 73 to
	80VAC. Normal DC maximum is
	67 to 72VDC. If the OCV is OK
	then proceed to Step #2. If the
	OCV is not present at the welder
	output	terminals, contact		your
	local Lincoln		Authorized	Field
	Service Facility.
2.	Check	the	welding cables,
	clamps and electrode holder for
	loose or broken connections.

RECOMMENDED

COURSE OF ACTION

1.Disconnect lead W1 from the Output Bridge (D1) and check

for the presence of 80VAC from gramstator winding. See wiringthe maindia-

. If the AC voltage is NOTlead W1 to lead W2 on

present, the winding in the sta- tor may be faulty. Check the winding for continuity and test to be sure it is NOT grounded to the stator iron. Replace if nec- essary. If the correct AC volt- age is present, proceed to step #2.

2. Check the Reactor, Range Switch (S1) and associated wires for loose or faulty connec- tions. Check the reactor wind- ing for continuity and test to be sure it is NOT grounded to the reactor iron.

3. Check the Choke (L1) and associated wires for loose or faulty connections. Check the choke winding for continuity and test to be sure it is NOT ground- ed to the choke iron.

4. Check the weld output terminals and associated wires for loose

or faulty connections.

5. PTestrform the Output Bridge

.

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CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877.

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