Ferrous materials can become dangerous projectiles in the
presence of the magnetic field produced by the magnet.
do not bring any ferromagnetic tools or equipment into
the magnet room.
DANGER
Electrocution hazard
high voltage present
Dangerous voltages exist inside the PEN Cabinet when energized.
Warning
Personal injury and equipment damage
If the magnet is energized, tools and loose materials that contain ferrous material will be strongly attracted to the magnet and may become dangerous projectiles.
When servicing any magnetic equipment, it is critically important that the service engineer consciously plan the path to be taken when moving highly ferrous devices within the magnet environment. The path should be as far from the magnet as practical and avoid high flux-density fields.
Movement of ferrous material in the magnet room must follow the GE service procedure for that device.
When exiting, move away from the magnet in the most direct manner possible. Except when moving ferrous material to and from its native location on or near the magnet, the static magnetic field in any portion of the service path shall not exceed 200 Gauss.
Two (2) MR safety trained personnel must be present at all times when servicing highly ferrous devices in the areas of magnetic fields.
When planning a service path, it is critical that the path be clear and sufficiently wide. Make sure that there are no trip hazards, obstacles, clutter, slippery surfaces, or other items even partially restricting the path. If there are portable obstacles in a path, remove them from the area and replace them after the service action is completed. It is required to walk the path prior to beginning service to ensure that there is sufficient space through which to pass for yourself and the object being serviced.
Warning
POSSIBLE PERSONAL INJURY!
THIS PROCEDURE REQUIRES Movement OF highly FERROUS MATERIAL
IN CLOSE PROXIMITY TO THE MAGNET. ANY FIELD STRENGTH >200 GAUSS WILL
FORCIBLY ATTRACT THE BLOWER BOX and THE MOTOR PANEL ASSEMBLY.
STAY OUTSIDE THE 200 GAUSS LINE WHEN MOVING either component.
KEEP AS FAR FROM MAGNET AS POSSIBLE AND REFER TO the MR Magnet Safety
Requirements in the MR Service Safety Manual, PN 5452735.
Remove eSRPS Filter
Procedure
Perform LOTO for the RF amplifier and PEN cabinet (magnet room
electronics). See the MR Service Safety Manual, PN
5452735.
Disconnect cables from front of eSRPS filter (inside the scan
room).
Remove 6 thumbscrews.
Figure 1. Front of eSRPS Filter
Disconnect cables from rear of eSRPS filter (equipment room
side).
DANGER
Strong Magnetic Field!
The Filter is a Large Ferrous object and can become dangerous
projectile in the presence of the magnetic field produced by the magnet.
Plan a clear, wide service path to remove the filter from
the scan room. Verify that there are no trip hazards, obstacles, clutter,
slippery surfaces, or other items intruding into the service path.
If any items are in the service path, remove them before removing
the filter.
Slide out the filter and safely remove it from the scan room.
Replace eSRPS Filter
Procedure
Reconnect the cables to the rear of the filter (equipment room
side).
Slide in the new filter.
Secure 6 thumbscrews.
Reconnect the cables to the front of the filter.
Finalization
Procedure
Remove LOTO for the RF amplifier and PEN cabinet (magnet room
electronics). See the MR Service Safety Manual, PN
5452735.
Strong Magnetic Field!The Filter is a Large Ferrous object and can become dangerous projectile in the presence of the magnetic field produced by the magnet.Plan a clear, wide service path to remove the filter from the scan room. Verify that there are no trip hazards, obstacles, clutter, slippery surfaces, or other items intruding into the service path. If any items are in the service path, remove them before removing the filter.