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Note:
The filament housing assembly used for EI operation has two filaments, unlike the
CI filament housing assembly, which has only one.
Figure 4–28: EI and CI filaments
EI filament assembly
CI filament assembly
8.
Replace the damaged filament with the new filament.
Important:
Use the correct filament. Use yttrium oxide coated rhenium filaments for EI
operation and uncoated rhenium filaments for CI operation.
Note:
The filament can be fitted in only one way.
9.
Secure the filament with the screw, and then tighten using the 2.5-mm hex wrench.
Important:
For EI operation, if the second filament is not fitted, its retaining screw must
not be fully tightened.
10. Fit the filament housing assembly into the inner source:
a.
Align the pegs on the filament housing assembly with the bayonet mount on the
inner source.
Figure 4–29: Aligning the filament housing assembly
b.
Lower the filament housing assembly into the bayonet mount, and then turn it
approximately 30º in a clockwise direction.
April 27, 2020, 715005564 Ver. 01 (previously released as Rev. A)
Page 76
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