• SIGNA MR355 / SIGNA MR360
  • Service Manual
  • 5856356-3EN Revision 5.0
  • Basic Service Documentation. Copyright General Electric Company.
  • Object ID: 00000018WIA3018EF20GYZ
  • Topic ID: id_13105996 Version: 1.6
  • Date: Apr 23, 2020 7:20:57 PM

TABLE ELECTRICAL ACTUATOR

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
10 minutes120 minutes0 minutes
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Spanners (1/2,3/4,3/8,7/16,5/16,32)One for each size---
Circlip inserter (A-150,A170)One for each size---
Hex. Socket (9/16,3/4,3/8)One for each size---
Scale (15cms & 30 cms)One for each size---
Ball driver (5/32,5/64,3/32,1/8,7/64,9/16)One for each size---
Allen key (5/32,5/64,3/32,1/8,7/64,9/16)One for each size---
Flat nose plier----
Cutter----
Copper hammer----
Screw driver (8mm, 4mm)One for each size---
Knife ----
Soft mallet----
Torque wrench (40-120 kg-cm,10 –50 lb-ft)----
Table 3. Consumables
ItemQuantityEffectivityPart numberManufacturer
Locktite / Primer (242, 569, 680, 415, 770)One for each size---
IPA----
White Marker----
Grease Mobil HSC 32----
Cotton waste White (High grade)----
Table 4. Safety
Figure 1. DO NOT TAKE THE TABLE BEYOND THE MARKED LINE

Procedure

  1. System Power must be turned OFF. Refer to Lockout / Tagout for System Cabinet PDU Main Breaker..
  2. Disconnect the Table from MR Magnet; take it out from the Magnet room. Refer to TAKE TABLE OUT FROM THE MAGNET ROOM
  3. Remove the scissor covers from the table. SCISSOR COVERS
  4. Assemble lock screw rod to lock position of scissor.
    Figure 2. Assemble lock screw rod
  5. Remove 4 screws of actuator mounting bracket.
    Figure 3. 4 screws
  6. Remove circlips & pin. Remove actuator.
    Figure 4. Remove circlips & pin
    Figure 5. Remove actuator
  7. Note:

    Before assembling new Actuator assembly, Ensure Actuator restrainer bracket is position to actuator block as shown. also ensure Nut to flush above Actuator restrainer bracket, do not tighten.

    Figure 6.
    Assemble pin & circlip for new actuator. In this case, actuator mounting bracket holes will not be aligned with tapped hole in lower base of table.
    Figure 7. Assemble pin & circlip for new actuator
    Figure 8. Placing Actuator
  8. Rotate lock screw rod to move tabletop down and align screw mounting holes.
    Figure 9. Rotate lock screw rod to move tabletop down
  9. Assemble actuator mounting screws and tighten.
    Figure 10. Assemble actuator mounting screws
  10. Remove lock screw rod.
    Figure 11. Remove lock screw rod.
  11. Arrest the restrainer block play by tightening the M6 hex head screw
    1. Tighten 2 screws till it butts against actuator top clevis, with this the Gap/play will be arrested between Actuator restrainer block and actuator top clevis.
    2. Above mentioned adjustment are made to ensure sensor rod is both vertical & parallel to rectangular tube during actuator up down motion & arrest sensor rod tilting.
      Figure 12. Tightening the M6 hex head screw
  12. Take the table to Magnet and restore the table. Refer installation manual for the Table installation procedure.