• Topic ID: id_16157500
  • Version: 5.0
  • Date: Jan 20, 2020 8:33:06 PM

Gantry Bore Cover Support Tool Usage

Prerequisites

Overview

This procedure explains how to remove and re-install the CT Gantry bore cover using tool.

1 Bore Cover Removal

Procedure

  1. Assemble the support tool.

    Figure 1. Support Tool

  2. Remove the Mylar window.
  3. Raise the Table to maximum height.
  4. Move the cradle until the position of the cradle head is approximately 10 cm backward from the gantry rear cover.

    Figure 2. Cradle Position

  5. Remove gantry right side cover.

    Refer to Parts Replacement → Gantry → Enclosure → (Cover Removal Procedures).

  6. Stop the rotor of X-ray tube in case of Liquid Bearing Tube before HVDC off. Refer to Liquid Bearing Tube Rotor stop procedure for details.
  7. Turn OFF the Axial Drive, HVDC and 120 VAC switches on the gantry’s Service Switch Panel.
  8. Remove the gantry left side cover and top covers, and slide the rear cover backward.
  9. Position the support tool on the cradle and push it against the bore cover.

    Figure 3. Support Tool Positioning

  10. Push up the stopper of the support tool and fit it to the rim of the bore cover (the groove of the scan window) to fix the support tool.

    Figure 4. Stopper of the Support Tool

  11. Disengage the bore cover from the gantry. The bore cover is supported by the support tool on the cradle.

    Refer to Parts Replacement → Gantry → Enclosure → (Cover Removal Procedures).

  12. Slide out the bore cover by moving the cradle backward.

    Figure 5. Bore Cover Removal

2 Bore Cover Installation

Procedure

  1. Slide the bore cover by moving the cradle, and attach it to the gantry.
  2. Engage the bore cover to the gantry.

    Refer to Parts Replacement → Gantry → Enclosure → (Cover Installation Procedures).

  3. Push down the stopper of the support tool, and remove the support tool.

    Figure 6. Stopper of the Support Tool

3 Finalization

Procedure

  1. Continue with other cover installation procedures as necessary. When AC power is restored to the system, prior to enabling axial drive or HVDC, remember to rotate the gantry by hand to ensure there is no interference between covers and rotating components.