PerkinElmer aanalyst 200 User Manual page 284

Maintenance
To Remove Impact Bead
1. Hold the impact bead by its base only.
2. Rotate it approximately 1/8 turn counter clockwise before carefully lifting it from the
nebulizer's body assembly.
Installing Spacer
The nebulizer assembly can be used with or without the spacer. Maximum sensitivity for Air-
Acetylene elements can be achieved without the use of the spacer.
The addition of the spacer reduces the amount of sample delivered to the flame. It is
recommended to use the spacer for all elements analyzed with the nitrous oxide-acetylene flame
and for elements which are air-acetylene flame sensitive such as calcium, chromium and gold.
When analyzing some complex sample matrices, it may be desirable to add the spacer to reduce
chemical interferences.
To Install Spacer
1. Hold the impact bead by its base only.
2. Rotate it approximately 1/8 turn counter clockwise before carefully lifting it from the
nebulizer's body assembly.
3. Place the spacer onto the back of the nebulizer and replace the impact bead.
4. Rotate the bead 1/8 turn clockwise to "lock" the bead in place.
Figure 9- 14 Installing Spacer onto the Nebulizer
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