Remove and Install the AC Precharge TVSS Module for Frames 8...15

Replace the AC precharge TVSS module with kit catalog number 20-750-MACP-CD-TVSS (400V/480V) or 20-750-MACP-EF-TVSS (600V/690V). Follow these steps to remove and install the AC precharge TVSS module relay.
  1. Review the product advisories in Before You Begin.
  2. Remove power from the system.
  3. Open the input bay enclosure door.
  4. Remove the guard from the enclosure.
  5. Disconnect connector P15 (B) from the module.
  6. Remove either the M6 hex nut or M6 x 10 mm Torx screw that secures the ground wire to the appropriate PE-A1 terminal.
  7. Loosen the terminal block screws that secure the wires to terminals R/L1, S/L2, and T/L3 and remove the wires.
    example of how to remove the wire connections from the TVSS module for frames 8…15
  8. Remove the two M4 x 10 mm slotted-Torx screws that secure the TVSS module to the panel and remove the module.
    example of how to remove the TVSS module for frames 8…15
  9. Install the AC precharge TVSS module in the reverse order of removal.
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