Hardware manual

Maintenance 4
Agilent 7500 Series ICP-MS Hardware Manual 4-87
2 Polish each lens orifice.
Polish the orifice of each lens with alumina abrasive powder.
3 Wash and rinse each lens.
First, wash the polished lenses with plenty of pure water. Ultrasonic the
lenses in a 2% detergent solution for 5 minutes. Rinse the polished lenses
with plenty of pure water and ultrasonic for an additional 5 minutes in
pure water.
4 Dry the lenses and screws.
Place the lenses in pure water and then lay them on a clean laboratory
tissue. Let them dry by evaporation; do not wipe them dry.
Ensure that the spacers, screws, and shaft are kept clean. Do not touch
them with bare hands. If necessary, soak the spacers, screws, and shaft in
methanol for 5 minutes and rinse with pure water. Allow the components to
air dry. Do not wipe the components dry. It is not necessary to polish or
abrasively clean these components.
The opposite surface of the skimmer wrench can be used as the assembling
stand for the lens assembly. Clean it beforehand.
CAUTION
When cleaning a lens it is especially important to thoroughly polish the holes where
the ions will pass through.
Do not polish the flange surface of the skimmer base.
CAUTION
Completely dry all parts. If the parts are dried incompletely and are connected to the
vacuum chamber, a very long time will be needed to pump down to the Standby mode.
Clean the skimmer wrench with methanol and dry.
Do not use any solvent (methanol or acetone) to dry the Ion Lens parts. A small amount
of solvent left on the surface of the lenses will cause hydrocarbon to adhere to the
lenses.
CAUTION
Do not use acetone to clean the skimmer wrench.