16- or 32-Channel Reroute Box (RRB) Replacement

Prerequisites

Table 1 Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	30 minutes	30 minutes

Table 2 Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Non-magnetic Service Tool Kit	1	-	5112581	-

Table 3 Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
16-Channel Reroute Box	1	-	See FRU Manual	-
32-Channel Reroute Box	1	-	See FRU Manual	-

Table 4 Safety

Strong magnetic field!
The reroute box has no ferrous material and is not attracted to the magnet, but eddy currents set up by the strong magnetic field interacting with the box can make it difficult for one person to handle.
When removing and or replacing the reroute box in the rear pedestal, keep the box as far away from the magnet as possible.

Perform LOTO on the PGR cabinet. See the MR Service Safety Manual, PN 5452735.
Remove the side covers from the rear pedestal.

Figure 1. Removing Side Covers
Turn off the power switch on the power distribution board.

Figure 2. Power Switch on Power Distribution Board
Remove all cables connected to the RRB (top, side 1, and side 2). Record the cable locations and run numbers for reinstallation.
Remove the four bolts holding the RRB to the rear pedestal.

Figure 3. Reroute Box (Side 1 and 2)
While carrying the RRB out of the magnet room, stay as far away from the magnet as possible.

Strong magnetic field!
The reroute box has no ferrous material and is not attracted to the magnet, but eddy currents set up by the strong magnetic field interacting with the box can make it difficult for one person to handle.
When removing and or replacing the RRB from the rear pedestal, keep the box as far away from the magnet as possible.

While carrying the new box into the magnet room, stay as far away from the magnet as possible.
Install the four bolts to secure the RRB to the rear pedestal. (See Figure 3.)
Install all cables previously connected to the RRB (top, side 1, and side 2).