• SIGNA MR355 / SIGNA MR360
  • Service Manual
  • 5856356-3EN Revision 5.0
  • Basic Service Documentation. Copyright General Electric Company.
  • Object ID: 00000018WIA30F42030GYZ
  • Topic ID: id_13105825 Version: 1.3
  • Date: Jul 6, 2019 12:17:32 AM

XFD-PS Replacement (Mobile Site)

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable120 minutes15 minutes
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Standard Tool1---
Ladder1---
Fixed Site Lift Tool Kit1-

46-317266 All Generation

-
Table 3. Replacement parts
ItemQuantityEffectivityPart numberManufacturer
XFD-PS (Refer to Illustrated Parts)1---
Table 4. Safety
Table 5. Required conditions
ConditionReferenceEffectivity

System Power must be turned OFF. Refer to Lockout / Tagout for MDP(Main Disconnect Panel) or Facility PDU.

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Remove XFD-PS

Procedure

  1. Remove L Upper Front Cover. Refer to SC Cover Removal
  2. Turn the SW1 to Discharge on Front .
    Figure 1. Discharge
  3. Drain the coolant.　Refer to Draining Operation before replacing SRFD3, XFA, or XFD-PS.
  4. Disconnect the IN and OUT quick couplers of XFD-PS from the water manifold.
    Figure 2. Water Manifold Socket Order
    Note: When disconnecting the quick couplers, move the couplers in parallel not to damage it.
  5. Connect the IN and OUT of quick coupler.
    Figure 3. Water Manifold
  6. Set the Universal Lift Hoist onto SC top.　Refer to Hoist Setup.
  7. Disconnect the two connectors of leak sensor assy.
  8. Remove the cabinet leak sensor assy by loosening 6 screws.
    Figure 4. Remove Leak Sensor
  9. Disconnect the cable from J2 at Control Board and 4 terminal cables.
  10. Loosen 4 screws which are tightening XFD-PS front panel to the chassis.
    Figure 5. Remove Terminal Cover
  11. Note:

    M5 Screws to push out XFD-PS are located at chassis as following illustration.

    Screw two M5 (40mm) screws at the two screw holes to push the XFD-PS to the chassis and gradually slide it out from Cabinet.
    Figure 6. Gradually Slide Out Using Screws
    Note: If you cannot withdraw XFD-PS using M5 screw, need to disconnect connector from rear side. Refer to In case connector of XFA or XFD-PS is very tight.
  12. Withdraw XFD-PS from the chassis.
  13. Install hoist brackets to the chassis of XFD-PS with 4 screws. Do not tighten 4 screws of hoist brackets.
    Note: Hoist Bracket is stored in FRU box.
    Figure 7. Hoist Brackets Installation
  14. Install the hoist assembly to the hoist brackets of XFD-PS, and tighten 4 screws of hoist brackets. Check that hoist bracket and hoist assembly are installed surely.
  15. Remove the top from the FRU case by releasing the butterfly clamp on each side.

    Locate the top of FRU Box under the XFD-PS.

  16. Using the hoist, apply tension to the lifting chain until the weight of the XFD-PS is supported by the hoist.
  17. Press the release tabs in on each side as you pull the unit out further.
    Figure 8. Hoist Operation of XFD-PS
  18. Push the rail slider into the system cabinet before lowering XFD-PS.
    Note:

    Here is the tips of slider rail operation.

  19. Lift the XFD-PS up slightly to place the top of the small cart.
  20. Use the hoist and slowly lower the XFD-PS Chassis to the top of the small cart.
  21. Check that no LED is lit from the slit of right panel. If any LED is lit, Switch may be in failure and there exists charge inside of XFD-PS.
    Figure 9. LED Check

    If LED is lit, check the voltage of rear terminal. See Figure 10.

    Figure 10. Rear View of XFD-PS

    If voltage exist, wait until LED is turned OFF before transferring defective XFD-PS.

    At worst case, it will take 1 days to discharge.

    Note: EDLC (Super Capacitor in XFD-PS) is safe during discharge state unless the terminal is shorted.
    Note: Never short the terminal of XFD-PS.
  22. Move the cart with PS out of equipment room
  23. Install the hoist tool to the hoist point of trailer
    Figure 11. Install the hoist tool to the hoist point of trailer
  24. Hoist the PS from the hoist point of trailer and put onto the top cover of PS FRU package.
    Figure 12. Put XFD-PS to the top of FRU package
  25. Install the side covers on it
  26. Uplift and move the PS with package out of the trailer.
    Figure 13. Move the PS with package out of the trailer

Install XFD-PS (Mobile Site)

Procedure

  1. Uplift and move the new XFD-PS FRU with its arms (in side cover) to the hoist position on the trailer.
  2. Install Hoist tool to connect XFD-PS and hoist point on the trailer.
  3. Hoist the XFD-PS from the hoist point of trailer.
    Figure 14. Hoist XFD-PS
  4. Put the XFD-PS onto the small cart in the operating room.
    Figure 15. Put XFD-PS to small cart
  5. Move the cart with new XFD-PS to the equipment room
    Figure 16. Move new XFD-PS to the equipment room
  6. Install XFD-PS by the reverse order of the removal.
    Note: Make sure to connect all cables and hoses.
    Note: Make sure to close draining valves and open Supply and Return valves.
  7. Be sure to install the hoses to water manifold.
  8. Restore FRU Box as it was.
    Figure 17. FRU Box
  9. Check that the SW1 is at Operation position.
    Figure 18. Operation Position
  10. Remove the two hoist brackets from XFD-PS chassis.
  11. Restore System Cabinet.