Front End Bell Removal

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
2	Not Applicable	1.5 hours	Not Applicable

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Non ferrous M5 Allen Wrench	1	-	-	-
Non ferrous M4 Allen Wrench	1	-	-	-
Non ferrous Phillips Driver	1	-	-	-

Table 3. Safety

DANGER

Strong Magnetic Field!

Ferrous materials can become dangerous projectiles in the presence of the magnetic field Produced by the Signa Magnet.

Do not Bring any ferromagnetic tools or equipment into the magnet room.

Table 4. Required conditions
Condition	Reference	Effectivity
System Power must be turned OFF. Refer to System Cabinet PDU Main Breaker LOTO Procedure.	-	-

Remove following covers.
- Front trim ring (Refer to Front Trim Ring.)
- Bridge cover (Refer to Bridge Cover.)
- Bridge Assembly (Refer to Front Bridge Assembly.)
Remove the patient light end covers from the upper side of magnet bore by removing 2 bolts.

Figure 1. Patient Light End Cover Removal
Using an M5 Allen wrench, remove the two M6 bolts of fasteners which connect the RF coil and the front end bell. (Refer to illustration 2)

Figure 2. Fixing Bolts Removal
Cut the 5 tie-wraps fixing J10 connector cable.
Cut the tie-wrap from the magnet under side.
Withdraw sensor cable to the magnet front side.

Figure 3. Lower Cosmetic Cover
Remove 6 bolts that are securing the front end bell to the magnet.

Figure 4. 6 Bolts of Front End Bell
Remove the front end bell from the magnet bore.

Note: Weight of front end bell is approx.15kg. The front end bell removal needs two people.

Figure 5. Front End Bell Removal
Installation is reverse order of removal.

No finalization steps.