• Topic ID: id_16157456
  • Version: 1.0
  • Date: Jul 7, 2018 4:37:58 PM

CTPM-1322 (Clean DAS, DUCT Fan Filters)

Prerequisites

Overview

 Procedure Effectivity:

note:

This procedure is necessary to Maintain the cooling capacity of the SDAS.

Procedure

  1. Move the table to the lowest elevation.
    • warning
    • Potential for Shock.
    • Voltage may be present.
    • Use proper lockout/tagout procedures.
  2. Turn off the facility power to PDU.
  3. Remove the Gantry side covers.
  4. Lift off the top cover.
  5. Remove the "scan" window.
  6. Remove the front cover.
  7. Rotate the Gantry until the DAS/DUCT Fan assembly is within serviceable reach.
  8. Engage the rotational lock. See Figure 1.

    Figure 1. Rotational Lock

  9. Disconnect the fan harness.
    10. Notice Image
    • notice
    • POTENTIAL FOR EQUIPMENT DAMAGE. USING VACUUM HOSE NEAR LIVE ELECTRONIC EQUIPMENT MAY CAUSE EQUIPMENT DAMAGE DUE TO STATIC. MAKE SURE EQUIPMENT IS TURNED OFF PRIOR TO VACUUMING NEAR ELECTRONIC EQUIPMENT.
  10. Vacuum the dust from fan "finger" guards.
  11. Remove the filters from duct and vacuum dust from each filter. It is normal for the right chassis filter to be more dusty. See Figure 2.
    note:

    There are three filters in the DAS plenum.

    Figure 2. DAS Plenum Removal

  12. Inspect the duct for dust, remove it, and clean it, if necessary.
  13. Replace the filter. Note the DIRECTION OF AIRFLOW stamped on filter frame. Filter foam faces towards the fan).
  14. Restore the fan harness connection.
  15. Reassemble the Gantry covers and the scan window.
  16. Restore the power.

Finalization

No finalization steps.