• SIGNA MR355 / SIGNA MR360
  • Service Manual
  • 5856356-3EN Revision 5.0
  • Basic Service Documentation. Copyright General Electric Company.
  • Object ID: 00000018WIA30C8FF20GYZ
  • Topic ID: id_13106573 Version: 1.2
  • Date: Jul 6, 2019 12:03:28 AM

Draining Operation before replacing CSA, XFA, or XFD-PS

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable30 minutesNot Applicable
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Coolant Tank (Attached in System Cabinet)1---
Water tray (Attached in System Cabinet)1---
Hand Pump (Attached in System Cabinet)1---
Table 3. Safety
Table 4. Required conditions
ConditionReferenceEffectivity

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

--

Procedure

  1. Remove L Front Cover and Water Manifold Access Cover.　Refer to SC Cover Removal.
  2. Close the Manifold Valves. See Figure 3.
  3. Take out the two draining hoses from drip pan.
  4. To set the equipped water tray on drip in Step 5, sensor cables will interfere. Disconnect the connectors of sensor cable to set water tray. Be sure not to forget to re-connect after draining procedure.
  5. Set equipped water tray on drip for false operation prevention of a sensor. See Figure 3.
  6. Set the drain hoses to the equipped coolant tank. See Figure 3. (The opening of equipped coolant tank is a little bit small for two drain hoses. But, it is possible to insert two hoses.)
    Note:

    The Equipped Coolant Tank is found in the drip pan of SC left side.

    Note:

    The water tray and hand pump are found in the under side of cabinet monitor.

    Figure 1. Location of Coolant Tank
    Figure 2. Location of Water tray, and Hand Pump
  7. Open the drain valves. See Figure 3.
    Figure 3. Open Drain Valve
  8. Connect equipped hand pump to hose of one side, and push out remaining coolant.
  9. Connect pump to hose of opposite side and insert the other hose to the tank. Then, push out remaining coolant.

  10. Figure 4. Setup and push out coolant
  11. Close drain valves surely.
    Figure 5. Close Drain Valve
  12. Return the drained coolant to tank of LCS or MCS.
  13. Go to CSA, XFA, or XFD-PS unit replacement.
    Figure 6. Water Manifold Socket Order

Finalization

  1. After Replacement is done, make sure to close draining valves and open Supply and Return valves.
    Figure 7. Restoration
  2. Restore Water Tray and Coolant Tank.
  3. Restore draining hoses as it was.
  4. Connect sensor cables which are disconnected in Step 4.
  5. Restore Covers.