Agilent Technologies 55B AA User Manual page 110

Spectrometer
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Maintenance
Figure 68. Mixing paddles with opening at the bottom of the spray chamber
NOTE
Liquid can condense on horizontal surfaces and results in random %RSD "spikes".
Vertical blade alignment ensures the other paddles blades are also not horizontal,
minimizing the resultant noise.
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Slide the paddles into the spray chamber until the rear paddle is about to enter
the spray chamber.
Check that the paddles are still positioned with the vertical blade edges and
then carefully push the back paddle into the spray chamber using a blunt, inert
and clean object (for example, a plastic stirring rod) until the front paddle is
against the shoulder at the front of the spray chamber.
Lubricate the O-ring of the pressure relief bung with distilled water.
Insert the pressure relief bung into the rear of the spray chamber.
With a gentle twisting motion, firmly press the pressure relief bung as far as it
will go into the spray chamber.
Agilent 55B AA Spectrometer User's Guide

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