Replacement of PAC

Prerequisites

The PAC is located under the right side of the magnet enclosure.

Figure 1. PAC Location

1 Removal of PAC (for System Initial as SIGNA Creator / SIGNA Explorer)

Procedure

  1. Remove right middle side cover and right side covers.
  2. Remove bottom bar from Magnet right side.

    Figure 2. Removing bottom bar

  3. Cut the tie-wraps fixing cables.
  4. Remove Four Bolts/Nuts/Washer that fixes the PAC/SRI Tray and slide the PAC/SRI Tray out.

    Figure 3. Slide PAC/SRI Tray

  5. Disconnect the all cables attached to the PAC. Note down the cable sequence.
  6. Remove 2 screws holding PAC to tray.
  7. Remove the PAC with bottom fixture.

    Figure 4. PAC Removal

  8. Remove four screws and remove PAC Assy from Base Mount.

    Figure 5. Remove PAC Assy from Base Mount.

2 Removal of PAC (for Explorer Lift System)

Procedure

  1. Remove right middle side cover and right side covers.
  2. Remove bottom bar from Magnet right side. See Figure 2.
  3. Cut the tie-wraps fixing cables.
  4. Remove 4 screws securing right bottom bracket to magnet foot.

    Figure 6. Screws Securing Right Bottom Bracket

  5. Remove 2 screws securing PAC/SRI Tray to right bottom bracket.

    Figure 7. Screws Securing PAC/SRI Tray

  6. Disconnect the all cables attached to the PAC. Note down the cable sequence.
  7. Remove 2 screws holding PAC to tray. See Figure 4.
  8. Remove the PAC with bottom fixture.
  9. Remove four screws and remove PAC Assy from Base Mount. See Figure 5.

3 Installation of New PAC

Procedure

  1. Place new PAC on base mount and fix it with four screws.
  2. Place PAC on tray and tighten 2 screws.
  3. Connect the all cables.
  4. Restore PAC/SRI Tray.
  5. Fix the cables with tie-wraps.
  6. Restore bottom bar.
  7. Restore side covers.
  8. Remove tag-out tag from circuit breaker.
  9. Restore power.