• Topic ID: id_15460402
  • Version: 4.0
  • Date: Jan 20, 2020 8:32:29 PM

IMS Encoder Spool Wire Replacement

Prerequisites

Overview

Procedure

  1. Raise the Table to maximum height.
  2. Move the Cradle and IMS to OUT limit position.
  3. Remove power from Table by turning off 120VAC, Axial Drive and HVDC switches on Service Switch Panel.
  4. Remove the following Table component and covers:

    • Cradle

    • Top Cover (Right/Left)

    • Rail Cover (Right/Left)

    • Top Plate (Front/Middle/Rear)

    • IMS Side Cover (Right/Left)

    • IMS Rear Cover

    • Front/Rear Side Plate (Left)

    • Front/Rear Leg Plate (Left)

    Figure 1. Table Covers

  5. Loosen the adjusting nut, to remove tension from the IMS wire.

    Figure 2. Tension Adjuster

  6. Remove the IMS wire from the wire hook.

    Figure 3. Spool Wire Location

  7. Loosen 2 set screws on the wire drum, and remove the wire drum from the IMS encoder, then remove the IMS wire assy from the Table.

    Figure 4. Spool Wire Removal

  8. Install the new IMS wire assy :
    1. Attach the wire drum to the IMS encoder, and tighten the 2 set screws, to fasten the wire drum.
    2. Route the IMS wire as shown in Figure 4.
    3. Set the IMS wire to the wire hook as shown in Figure 4.
    4. Take off the adhesive tape from the wire drum.
    5. Rotate the adjusting nut in the CW direction until the distance D is approximately 1 ± 0.5 mm.
    6. Move the IMS manually IN and OUT, and verify that IMS movement is smooth.

Finalization

  1. Power up the Table from the Service Switch Panel.
  2. Perform IMS Characterization.
  3. Move the cradle and IMS IN and OUT completely 10 cycles and verify that Table movement is operating normally.
  4. Turn off all 3 switches (Axial Drive, HVDC, 120VAC), and re-install the Table covers.