Hardware manual

4-114 Agilent 7500 Series ICP-MS Hardware Manual
4Maintenance
Cleaning the Octopole
It is necessary to clean the Octopole if there is a signal drift, or a longer than
normal period of time is required for the signal to stabilize when switching
from hydrogen to standard mode.
Clean the Octopole after disassembling the Reaction cell and attaching the
Octopole holding fixtures.
Perform the following procedure when cleaning the Octopole.
1 With the Octopole holding fixtures attached, ultrasonic for 5 minutes in
IPA.
2 Rinse with pure water.
3 Ultrasonic for an additional 5 minutes in pure water.
4 Dry.
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.
If the printed circuit board has been removed from the Cell’s upper cover, pay attention
to the direction when re-attaching it. If it is incorrectly installed, the bottom connector
of the printed circuit board will hit the Cell’s upper cover and cannot be attached
properly.
NOTE
It is not normally necessary to clean the Cell’s upper and lower covers.
However, it these have been touched by bare hands or have oil on them, wipe clean with
alcohol (IPA, ethanol or methanol).
Remove the printed circuit board from the Cell’s upper and lower cover and allow it to dry
thoroughly.
NOTE
Use a large beaker to prevent the poles of the Octopole is contact with the wall of the
beaker. The Octopole may become misaligned.