• Topic ID: id_18480282
  • Version: 3.0
  • Date: Jan 20, 2020 8:36:15 PM

Tilt Potentiometer Replacement

Prerequisites

Overview

Procedure Effectivity:

Procedure

  1. Remove all covers except rear cover. All work should be performed from the left, front corner.
  2. 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.
  3. Turn off the Axial Drive and HVDC switches on the gantry’s Service Switch Panel.
  4. Turn off the 120VAC switch.
  5. Perform all required LOTO activities.
  6. Loosen the two (2) hex screws that mount the Tilt Potentiometer to the gantry assembly.
  7. Remove the belt from the 32-tooth pulley on the Tilt Pot Assembly.
  8. Remove connectors from the Tilt Pot Assembly (Illustration 1).

    Figure 1. Gantry Tilt Pot Assembly

  9. Remove two (2) hex screws that secure the Tilt Pot Assembly.
  10. Remove the Tilt Pot Assembly.
  11. Ensure the fastening screw should be located at the center of thru hole on the bracket.
  12. Reverse the above steps to install the new Tilt Pot Assembly.
  13. Perform Tilt Characterization.

Finalization

No finalization steps.