Maintenance
Agilent 55B AA Spectrometer User’s Guide 109
To clean the spray chamber
1 Remove the nebulizer/spray chamber assembly from the sample
compartment. Disassemble the spray chamber and liquid trap.
2 Flush the spray chamber components with an appropriate solvent and then
wash them thoroughly in laboratory detergent and warm water.
3 Use a bottlebrush to clean the inside of the spray chamber.
4 If necessary, clean the mixing paddles in an ultrasonic bath.
5 Rinse all parts thoroughly with distilled water and dry thoroughly.
6 Inspect all O-rings and replace any that are cracked or deformed. Replacement
is easier if the O-rings are lubricated with distilled water.
7 Re-assemble the spray chamber according to the instructions below.
To assemble the spray chamber
NOTE
Touching or otherwise contaminating any part of the mixing paddles will degrade
the performance of the spray chamber. For cleaning instructions, see ‘To clean the
spray chamber’ – Page 109.
1 Position the front (boss end) of the mixing paddles in the opening at the rear
(bung end) of the spray chamber, being careful not to contaminate them.
2 Align the mixing paddles so that the edges of a pair of blades are vertical when
installed.
Use a high vacuum grease to sparingly lubricate O-
rings, immediately wiping off any
excess with a clean cloth.
Do not use hydrocarbon or silicon grease.
O-ring replacement kits are available from Agilent (refer to the Spare Parts chapter
for ordering information).
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