• SIGNA™ Hero 3.0T Service Methods
  • 5852800-8EN Revision 1.0
  • Object ID: 00000018WIA30A2FE20GYZ
  • Topic ID: id_13106615 Version: 3.22
  • Date: Jan 26, 2022 2:01:03 AM

Cryocooler (F-50SH) setup

Prerequisites

Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
2-120 minutes-
Topic ID: id_SL12240773-1212135

Shield/cryocooler installation

Procedure

  1. Open the Integrated Cooling Cabinet (ICC) cover and remove it.
    Figure 1. Remove ICC cover
  2. Remove the bottom reinforcement bar by removing 6 screws.
    Figure 2. Remove the bottom reinforcement bar
  3. Install the He line adaptors (long and short) and handle.
    1. Install the He line adaptor (long).
    2. Install the He line adaptor (short).
    3. Install the handle with 3 screws.
    Figure 3. He line adaptors (long and short) and handle
  4. Connect the E0011 and M0011 cables.
    Figure 4. E0011 and M0011 connection
  5. Slide the F-50SH shield/cryocooler into the lower opening of ICC.
    Figure 5. Shield/cryocooler installation
  6. Do the following steps:
    1. Insert copper mesh in wave guide.
      Note: For remote (off-the-wall) siting configuration, insert the copper mesh into the penetration panel waveguide.
    2. Install elbow pipes.
    Figure 6. Copper mesh and elbow pipes
Topic ID: id_SL12745865-1212135

Equipment room hose and cable connection

Procedure

  1. Before routing the hoses and cables, make sure the hose/cable alignment on the tray is as shown below.
    Figure 7. Equipment room cable tray cross-section view for standard (on the wall) siting
    SectionDescriptionContents
    1Water hose

    Red hose

    Green hose

    Facility water supply

    Facility water return

    2Fiber optics

    E850

    E5001

    E5002

    P5006

    3300V signal, 300V power, and 300V power/signal

    E3014

    E3020

    E3041

    E3031

    4GND

    E4007

    E4008

    MDP-ISC

    5AC power cables

    E****

    E0003

    E0007

    E0009

    E0010

    Note: E850 is the cable between F-50SH and MM4.
    Figure 8. Equipment room cable tray cross-section view for remote (off the wall) siting configuration
    ItemDescriptionContents
    1300V signal, 300V power, and 300 V power/signalM3314, M3311, M3313, M3315, M5001, M3023, M3022, M3391, M3379, M3300, M3339, 1265, 1502, M3030, M0011
    2Fiber opticP5001, P5006
    3>= 600V coax/RF and AC powerM5003, M5004, M1305, M1350, and M1351
    4Gradient and RF and AC powerM3317, M3318, M3319, M4005
    5Gas Lines (2)Run 621 cold head gas line

    Run 622 cold head gas line

    6Air Hoses (2)

    4-inch air return (body coil)

    4-inch air return (patent air)

    7Water Hoses (2)Blue water hose

    Black water hose

    Note: * indicates optional cable

  2. Note: Make sure to route the hoses to avoid the hoist setup locations, which will be used for FRU replacement.
    Figure 9. Hose routing above ICC
    Route the facility water hose on the tray and connect to the hose joint on the ICC.
    Figure 10. Facility water hose
  3. Install the Water Flow Control Adapter (orifice) (5335002) according to the following steps:
    Note: The Water Flow Control Adapter (orifice) is shipped with the F-50SH.
    1. Wrap the male end of the orifice fitting with Teflon tape to prevent leaks.
    2. Insert the water flow adaptor and thread the male end into the coolant inlet port of the compressor. Tighten as appropriate to prevent leaks.
    3. Connect hoses according to Step step 4.
    Figure 11. Water flow adaptor (orifice) installation
  4. Connect the hoses per the following steps:
    Note: Use the gray (5264039) and yellow (5264063) hoses only. DO NOT use the white hose supplied with flow (2333825).
    1. Connect two elbow hose nipples to the F50 water supply and return ports.
      Note: Cut the gray hose to make two pieces for supply lines. One is for the line between the FPU and the flow/temp sensor. The other is for the line between the flow/temp sensor and the F-50SH.
    2. Connect the water flow/temp sensor in between gray hoses with hose bands.
      Note: Position the flow meter vertically as in Figure 12. Do not lay the meter flat on the chassis, which will result in excessive impeller wear and degrade the performance of the unit over time.
    3. Connect water hoses in between the FPU and F-50SH and secure them by hose bands except FPU ends (use gray hose for supply line. Use yellow hose for return line).
    4. Note: Secure the hose band firmly to avoid a water leak.
      Cover the hoses with insulator.
      Figure 12. 1/2-inch water hose connection
  5. Install the reinforcement bar with screws.
    Figure 13. Reinforcement bar
    Note: (For Remote (off the wall) siting configuration) The cold head EMI filter should be de-installed from the ICC PW and installed on the Penetration Panel. Refer to Installing the coldhead EMI filter on the penetration panel.
  6. Route and connect the F-50SH power cable (E0009) and sensor cable (Run 826).
    Note: F-50SH Power is provided by the MDP or facility PDU with a 30A breaker.
    Figure 14. F-50SH power cable
  7. (For Standard (on the wall) siting configuration) In the scan room, connect the cables for the magnet monitor and MRU.

    (For Remote (off the wall) siting configuration) route the cables from the magnet monitor and MRU to the scan room through the penetration panel (without routing through the ICC).

    Figure 15. Cables for magnet monitor and MRU
    Note: For remote (off the wall) siting configuration, the BNC/DB filter is removed from the ICC PW and installed on the penetration panel. These cables do not pass through the ICC, they connect to the same location on the penetration panel.
Topic ID: id_SL12745898-1212135

Scan room hose and cable connection

Procedure

  1. Hose routing inside of the ICC PW cover will be as illustrated below.
    Figure 16. Hose routing inside of ICC PW cover
  2. Route the helium gas flexline and coldhead power line (M0011) from the coldhead:
    • (For Standard (on the wall) siting configuration) Refer to Figure 17 for cable alignment on the tray.
    • (For Remote (off the wall) siting configuration) Route the helium gas flexline from the coldhead through penetration panel waveguide J110, J111. Route the coldhead power line (E0011) to the equipment room side of the penetration panel, connect cable (M0011) from the coldhead to the penetration panel on scan room side. See Figure 18.
  3. Connect flexline and power line.
    Figure 17. F-50SH and coldhead connection for standard (on the wall) siting configuration
    Figure 18. F-50SH and coldhead connection for remote (off the wall) siting configuration
    Figure 19. Scan room cable tray cross-section view for standard (on the wall) siting configuration
    ItemDescriptionContents
    1Water hoses

    Blue hose

    Black hose

    2Air hoses

    4-inch air supply - VRMw

    4-inch air supply - patient air

    3Gas lines

    621 cold head gas line

    622 cold head gas line

    4Gradient cables and RF common GND

    M3317

    M3318

    M3319

    M4005

    5Fiber optic

    P5001

    P5006

    6300V signal, 300V power, and 300V pwr/signal cables

    624

    M3023

    M3022

    M3339

    M3391

    M5001

    M5002

    7600V Coax/RF cables

    M5003

    M5004

    M1305

    M1350

    M1351

    Figure 20. Scan room cable tray cross-section view for remote (off the wall) siting configuration
    ItemDescriptionContents
    1300V signal, 300V power, and 300 V power/signalM3314, M3311, M3313, M3315, M5001, M3023, M3022, M3391, M3379, M3300, M3339, 1265, 1502, M3030, M0011
    2Fiber opticP5001, P5006
    3>= 600V coax/RF and AC powerM5003, M5004, M1305, M1350, and M1351
    4Gradient and RF and AC powerM3317, M3318, M3319, M4005
    5Gas Lines (2)Run 621 cold head gas line

    Run 622 cold head gas line

    6Air Hoses (2)

    4-inch air return (body coil)

    4-inch air return (patent air)

    7Water Hoses (2)Blue water hose

    Black water hose

    Note: * indicates optional cable

Topic ID: id_SL12745850-1212135

Magnet Monitor cables and connection check

Procedure

  1. Connect Magnet Monitor (MM) cables per #id_SL12745850-1212135__SL12269006-1212135 and Figure 23.
  2. Make sure all cables are connected.
    Figure 21. Hose and cables for standard (on the wall) siting configuration
    Figure 22. Hose and cables for remote (off the wall) siting configuration
    Figure 23. F50SH connection
    Note: For remote (off the wall) siting configuration, E3023, E3022 cables route through the penetration panel and do not route through the ICC.
Topic ID: id_SL13415218-1212135

Filling ICC primary water circuit

Procedure

  1. Make sure the facility water hoses are connected to the ICC.
  2. Close the three valves with the red handle (two valves for emergency cooling and one valve for filter flushing).
  3. Open the shut-off valve for incoming coolant on module FPU. Leave the shut-off valves (for outgoing coolant) closed.
  4. Open the valves for in and out lines of the cryogen compressor.
  5. Connect a transparent hose onto the emergency valve. Install the other end of the flushing hose to a sufficient collecting vessel.
  6. Open the facility water valves and supply the facility slightly.
  7. Check for leakage.
  8. Open the emergency valve hose slightly and flush the water. If coolant with no additions of air (bubbles) appear, close the flushing line by closing the emergency valve.
  9. Open the shut-off valves. The residual air should leave by flushing the circuits while the system is running. Disconnect the flushing hose.
  10. Note: Do not exceed the maximum pressure on the pressure gauge.
    Open valves of supply and return of the facility water as much as needed to read the gauge in between 50 L/min and 80 L/min (13.2 gpm and 21.1gpm).
    Note: Typical value of water flow is 60 L/min (15.8 gpm).
    Figure 24. Valve operation
  11. Check for leakages.
Topic ID: id_SL13415230-1212135

Run the cryocooler

Procedure

Refer to DIR5495018 Magnet and Cryogen Manual for Passively Shimmed Magnets and run the cryocooler.