Lincoln Electric INVERTEC SVM199-A - Manual (Page 66)

INPUT CONTACTOR TEST PROCEDURE (continued)
PROCEDURE
1. Remove input power to the INVERTEC®
V450-PRO.
2. Using the 3/8” nut driver, remove the input
access panel and case top.
3. Locate, mark, and remove the two leads (601,
X4) that are connected to the input contactor
coil. See Figure F.4.
4. Using the external 24 VAC supply, apply 24
VAC to the terminals of the input contactor coil.
If the contactor does NOT activate, the input
contactor is faulty. Replace.
TROUBLESHOOTING AND REPAIR F-26 F-26
INVERTEC® V450-PRO
INPUT CONTACTOR 601 X4
INPUT
CONTACTOR
601
X4
FIGURE F.4 – INPUT CONTACTOR COIL
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