Lincoln Electric SVM158-A service manual Auxiliary Transformer NO.1 Test, Normal Expected Voltage

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F-35			F-35
	TROUBLESHOOTING & REPAIR
	AUXILIARY TRANSFORMER NO.1 TEST (continued)
		TABLE F.4
	LEAD IDENTIFICATION		NORMAL EXPECTED VOLTAGE
	31 TO 532
			115 VAC
	42 TO 541
			42 VAC
	24 TO 541
			24 VAC
	54 TO 541		28 VAC

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7.Carefully apply the correct input voltage to the V350-PRO and check for the correct sec- ondary voltages per table F.4. Make sure the reconnect jumper lead and switch are config- ured correctly for the input voltage being applied. Make sure circuit breaker (CB3) is functioning properly.

NOTE: The secondary voltages will vary if the input line voltage varies.

8.If the correct secondary voltages are present, the auxiliary transformer is functioning proper- ly. If any of the secondary voltages are miss- ing or low, check to make certain the primary is configured correctly for the input voltage applied. See Wiring Diagram.

WARNING

High voltage is present at primary of Auxiliary Transformer.

9.If the correct input voltage is applied to the primary, and the secondary voltage(s) are not correct, the auxiliary transformer may be faulty.

10.Remove the input power to the V350-PRO.

11.Install the case wraparound cover using a 5/16” nut driver.

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V350-PRO