1

Shutdown the system.

2

Remove the knurled screw on the top.

3

Slide the FPD top cover borad then remove it.

4

Slowly pull the photomultiplier unit out horizontally to remove it.

Cover the photomultiplier receiver with aluminum foil etc. to avoid exposure to intense light.

5

Rotate the interference filter by hand and remove it.

6

Wipe away any dirt on the filter surface using a soft cloth.

Filter for S (Sulfur) 221-46310-01
Filter for P (Phosphorus) 221-46310-02
Filter for Sn (Tin) 221-46310-03

7

Check the O-ring of the interference filter and replace it if it shows signs of deterioration.

O-ring, for outside the filter 036-19006-17
O-ring, for inside the filter 036-19006-14

8

Rotate the interference filter by hand to attach it.

9

Attach the photomultiplier unit slowly.

10

Put back the top cover board and slide it to adjust the screw position.

11

Tighten the knurled screw with pulling the board to the left so that it fits on the photomultiplier unit.

12

Start up the system.

Note:
The cover board (P/N : 221-71795-91) has been modified since Apr. 2006 product (the previous model was in the shape of a flat borad).