• SIGNA™ Hero 3.0T Service Methods
  • 5852800-8EN Revision 1.0
  • Object ID: 00000018WIA306D0E20GYZ
  • Topic ID: id_13106297 Version: 3.1
  • Date: Jul 13, 2021 6:28:47 PM

Draining Operation before replacing RF Amp, SSSA, or SSSPS Replacement

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable30 minutesNot Applicable
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Coolant Tank1---
Hand Pump1---
Table 3. Safety
Table 4. Required conditions
ConditionReferenceEffectivity

System Main Breaker is OFF. Refer to ISC PDU Main Breaker LOTO Procedure.

--

Procedure

  1. Open ISC covers.
  2. Disconnect connector and remove Water Leak sensor tray for RF Amp by removing screw.
    Figure 1. Water Leak sensor tray removal
  3. Disconnect all of Quick Disconnect to Water Manifold and RF Amp
    Figure 2.
    aRF Amp
    bSSSA (X)
    cSSSPS
    dSSSA (Y)
    eSSSA (Z)
  4. Disconnect two leak sensor connectors.
    Figure 3. two leak sensor connectors
  5. Slide Water Manifold Plate.
    1. Loosen screws.
    2. Slide out Water Manifold assy.
    Figure 4. Slide Water Manifold Plate
  6. Perform the following steps.
    1. Close the Manifold Valves.
    2. Set the drain hoses to the draining nipples and inset the other side into coolant tank.
    3. Open the draining valves.
    Figure 5. Open Drain Valve
  7. Perform the following steps.
    1. Push Water Manifold Assy a little.
    2. Connect the Quick disconnect connectors for replacement module.
    Figure 6. Quick disconnect connectors (Example)
  8. Perform the following steps.
    1. Connect hand pump to one of the hose. Then, push out the coolant in the replacement module.
    2. Connect pump to the other hose of and insert the remaining hose to the tank. Then, push out the coolant.
    Figure 7. Setup and push out coolant
  9. Perform the following steps.
    1. Close drain valves.
    2. Remove the hoses from draining nipples.
    Figure 8. Close Drain Valve
  10. Return the drained coolant to tank of CCU.
  11. Go to RF Amp, SSSA, or SSSPS replacement.

Finalization

  1. After Replacement is done, restore the water manifold.
    1. Open Water Manifold Valves
    2. Restore Water Manifold Plate.
    3. Restore Quick Disconnect connectors.
    Figure 9. Restoration
  2. Restore water leak sensor tray. Do not forget to connect sensor cables.