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Replacing the Gen2 gradient filter for remote siting configuration
Instructions to remove the Gen2 gradient filter and replace it with a Gen2 gradient filter.

Replacements
- Operator Workspace
- ISC (Integrated System Cabinet)
- ICC (Integrated Cooling Cabinet)
- Magnet Enclosure and Outer Electronics
- Coil Replacement
- Patient Table
- MDP
- Pen Panel
  - Replacing the Gen2 gradient filter for remote siting configuration
    Instructions to remove the Gen2 gradient filter and replace it with a Gen2 gradient filter.
    - Electrical Safety
      You must follow all recommended safety procedures when servicing and working near energy sources.
    - Shutting down the host computer
      Shutting down the host computer shuts down the system safely and turns off the power to the host computer.
    - Applying LOTO - ISC
      Apply LOTO to the Power Distribution Unit (PDU) when servicing this item in the Integrated System Cabinet (ISC). Applying LOTO ensures a safe environment when working on this part.
    - Removing the gradient filter
      Remove the gradient filter from the Integrated System Cabinet (ISC) Penetration Wall (PW) for replacement with a Gen2 gradient filter.
    - Replacing the gradient filter
      These steps are required for replacement of 5726228 or 5726228-2 with 5808046-2.
    - Installing gradient cables to the Gen2 gradient filter - scan room
      Steps for preparing the scan room gradient cables for attachment to a Gen2 gradient cable with a ramped magnet.
    - Installing the Gen2 gradient filter in the Penetration Panel (PP)
      Install the gradient filter in the opening in the Integrated System Cabinet (ISC) Penetration Panel (PP).
    - Installing gradient cables to the GFA2 equipment room (2nd generation gradient filter)
      Attach precrimped lugs and connect the gradient cables to the equipment room side of the Gen2 Gradient Filter Assembly, 5808046-2.
    - Connecting the gradient cables to the Gen2 gradient filter - scan room
      Connection steps for gradient cable to Gen2 gradient filter, scan room side.
    - Removing LOTO - ISC
      Removing locks and tags, and restoring power to the ISC (Integrated System Cabinet) Power Distribution Unit (PDU).
    - Starting up the host computer
      How to start the host computer.
    - Doing DQA calibration
      The DQA tool determines proper gradient polarity and proper gradient wiring by scanning a series of axial and coronal images of the DQA III phantom.
  - Cold Head EMI Filter Replacement
  - Air Filter Cleaning / Replacement
  - Replacing the PS filter box
    Replace the PS filter box in the Integrated System Cabinet (ISC) Penetration Wall (PW).

SIGNA™ Hero 3.0T Service Methods
5852800-8EN Revision 1.0
Object ID: 00000018WIA30B54450GYZ
Topic ID: id_2022042 Version: 1.18
Date: Oct 19, 2021 3:26:50 PM

Replacing the Gen2 gradient filter for remote siting configuration

Prerequisites


Personnel requirements - Replacing 5808046-2 with 5808046-2
Required persons	Preliminary requirements	Procedure	Finalization
2	-	1-2 hours	15 minutes


Tools and test equipment
Instance	Item	Quantity	Part number	Manufacturer
All	Torque Wrench, 8-50 N m Adjustable, non-magnetic	1	5534134 or 5534134-2	-
All	Nonmagnetic Titanium Service Tool Kit, Large Set	1 Kit	5112581	-


Replacement parts
Instance	Item				Quantity	Part number	Manufacturer
All	Gen2 Gradient Filter Assembly				1	5808046-2	-

Safety

Before working in any GE Healthcare MR suite or performing any GE Healthcare service procedure, you must:

Have read and understood all hazard conditions and safety requirements in the latest revision of the GE Healthcare MR Service Safety Manual (5452735).
Have successfully completed all relevant GE Healthcare Environmental Health and Safety (EHS) courses (or for non-GE employees, equivalent workplace training courses).
Comply with all site-specific training and workplace safety requirements.

If you have any safety concerns at any time, do not begin work or immediately stop work and move to a safe location. Immediately contact your supervisor or site safety officer for instructions on how to proceed.

DANGER

Fatal electric shock hazard

The gradient amplifiers act as constant load sources and will send maximum current to any load, including any human who gets across the outputs.

To prevent fatal electric shock, follow LOTO steps to disable and make sure of safe voltage levels.

CAUTION

THE WEIGHT OF THE GRADIENT FILTER IS 55 lbs (25 kg).

2 persons are required for replacing the gradient filter, and safety shoes should be worn.

About this task

Figure 1. Gradient filter location

The cables are in X, Y, Z order from left to right on the equipment room side, and Z, Y, X order from left to right on the scan room side.

Figure 2. Gradient filter cable order

1	Equipment room side (X, Y, Z)
2	Scan room side (Z, Y, X)