Lincoln Electric SVM114-C GAS Solenoid Valve and Solenoid PC Board Test, 512, 624A 621 J11

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F-11 TROUBLESHOOTING AND REPAIR F-11

GAS SOLENOID VALVE AND SOLENOID PC BOARD TEST (continued)

FIGURE F.4 – PC BOARD FOR K430-1 GAS SOLENOID KIT.

	512
624A	621
621	J11

PC BOARD FOR K430 GAS SOLENOID KIT.

M15202

606

624A 512 621

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2.Check for the presence of the DC voltage applied from lead 624A(+) to lead 621(-). See Figure F.4

3.Check for the presence of 12 VDC from lead 512(+) to lead 621(-).

4.Check for the presence of 10 VDC from lead 606(+) to lead 621(-). When the LN-25™ trigger circuit is activated, the voltage should drop to about 1 VDC.

5.If the above voltage readings are good and the solenoid valve is functional, the Solenoid PC Board may be faulty.

6.If the above voltage checks are not correct, the control board, contactor board (if used), remote control board (if used) and/or wiring harness may be faulty. Refer to the wiring diagrams in the Electrical Diagrams Section.

The appropriate jumper plugs may be used to isolate and check suspect contactor or remote control boards.

LN-25™