• Topic ID: id_16157805
  • Version: 3.0
  • Date: Apr 9, 2020 8:42:02 PM

Collimator and Detector Heater PS Adjustment

Prerequisites

Overview

Procedure Effectivity:

1 Test Point Specifications

Procedure

  1. The detector heater power supply specifications are shown below:

2 Adjustment Procedure

Procedure

    • danger
    • Electrocution hazard.
    • High Voltage present.
    • Use proper lockout/tagout procedures before replacing components.
  1. Remove gantry side covers and top covers.
  2. Turn off Axial Drive and HVDC on the gantry’s Service Switch Panel (SSP).
  3. Rotate gantry until Collimator/Detector Power assembly reaches the 2 o’clock position.
    • danger
    • CRUSH HAZARD.
    • Potential for severe injury due to uncommanded motion.
    • Engage gantry rotational lock.
  4. Remove four (4) nuts on Filament Power assembly safety cover and remove cover.
  5. Collimator P.S. output checks:

    • Connect positive voltmeter lead to +OUT terminal on power supply.

    • Connect negative voltmeter lead to -OUT terminal on power supply.

    • Turn voltage adjustment pot to adjust the output voltage to 24 ± 1 VDC.

  6. Reassemble the Gantry.

3 Finalization

No finalization steps.