• Discovery MR750 3.0T System Service Methods
  • 5690009-2EN Revision 4
  • Object ID: 00000018WIA3044BE20GYZ
  • Topic ID: id_13106532 Version: 3.4
  • Date: Jan 5, 2022 7:21:15 PM

Cradle Home Table down interlock adjustment

This procedure describes how to adjust the mechanical interlock, which prevents the Patient Table from being undocked or lowered while the Cradle is in the magnet bore.

Prerequisites

Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1 -15 minutes -
Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Non-magnetic Service Tool Kit1-

5113258 or 5112581

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About this task

This adjustment is for the mechanical interlock which prevents the Patient Table from being undocked or lowered while the Cradle is in the magnet bore.

Procedure

  1. Undock the Table.
  2. Fasten the Upper Bellows in the up position and remove both the Lower Base Side Cover and the Front Base Cover from the Patient Table. See the Patient Table Upper Bellows and Lower Base Side Cover Removal document for details.
  3. Raise the table to its maximum height.
  4. Lower the table lock safety bar.
    Figure 1. Table Lock Safety Bar
  5. Lower the table and make sure that all of the table top's weight is resting on the safety bar.
  6. With Cradle in NOT HOME position (Cradle off the flipper and in up position), do a check of the interlock mechanisms for tolerances. To make adjustments, do one of the following:
    1. 1/16 to 1/32 inch (1.59 to 0.79 mm) gap - Adjust angle between link and bracket with set screws.
      Figure 2. Cradle Home/Table Down Interlock (Right Side)
    2. 1/8 inch (3.18 mm) gap - Loosen lock nut and tighten or loosen the cable adjustment screw to achieve the proper gap. Tighten lock nut.
      Figure 3. Cradle Home/Table Down Interlock (Left Side)
    Note: If the adjustment screw does not provide enough range for adjustment, coarse adjustment may be made to the cable length where the cable end is clamped into actuator bracket. Fine adjustment will be required after doing a coarse adjustment.
  7. Raise the table lock safety bar.

Finalization

With the Cradle fully into the bore, make sure that the table down pedals do not allow the Table to go down. Use both the table down pedal from the Table and the dock. If the Table does go down, do the adjustment procedures again.