Hardware manual

4-112 Agilent 7500 Series ICP-MS Hardware Manual
4Maintenance
2 Polish with polishing paper (#1200).
3 Clean the orifice of each lens using an almunia powder slurry.
Use a mixture of alumia powder and pure water as a polishing solution.
Dip a cotton swab in the polishing solution and clean the inner and outer
surfaces of the lenses. Pay particular attention to the holes.
4 Rinse with pure water after cleaning.
5 Ultrasonic the lenses in a 2% detergent solution for 5 minutes after
cleaning.
6 Rinse with pure water.
7 Ultrasonic the lenses in pure water for an additional 5 minutes.
8 Dry on a clean surface.
Allow the lenses to air dry, do not wipe.
CAUTION
Do not clean plastic components (spacers) with acetone. The plastic will be damaged
or deformed if it comes in contact with acetone.
Completely dry all components. If components are connected to the vacuum chamber
before they have completely dried, it will take an extraordinarily long time for the
chamber to pump down to Standby mode. Also, if the Extraction Lens and Omega Lens
are assembled before they are completely dried it can have a potentially critical impact
on the components when the plasma is ignited.
NOTE
It is not normally necessary to clean the Skimmer Base. However, if it comes into contact
with your bare hands or oil, clean it with alcohol.