Hardware manual

4-116 Agilent 7500 Series ICP-MS Hardware Manual
4Maintenance
2 Install the Octopole Assembly.
Reassemble the Cell Focus, Cell Entrance Lens, QP Focus, and Cell Exit
Lens on both sides of the Octopole assembly in their original order.
Reassemble the Cell Entrance Lens together with the Entrance side spacer
and Cell Focus. Reassemble the QP Focus together with the Exit side spacer
and Cell Exit Lens. (Refer to Figure 89)
The dimensions of the Octopole are different on the Entrance and Exit
sides, so make sure it is assembled in the correct direction.
3 Install the Octopole Assembly to the lower cell block.
Confirm the diameter of the Octopole shafts with the depths of the cell
lower block to ensure that the Octopole assembly is refitted in the correct
direction on the cell lower block. The contoured side of the Octopole holder
should be facing up. If any of these components are installed in the wrong
direction, the cell upper block will not mate correctly with the cell lower
block and a gap will remain between the two, preventing the instrument
from being correctly refitted.
CAUTION
The two shafts on the Octopole are of different diameters to prevent the Cell Entrance
Lens and Cell Exit Lens from being mis-assembled. Incorrectly assembled, the lenses
may be damaged by contact with the Octopole. Pay careful attention to the direction of
the lenses when assembling.
Always remove only one Octopole plate (located on both sides of the Octopole
assembly) at a time, leaving the other plate assembled to the other Cell Entrance Lens
/ Cell Exit Lens. Removing both at the same time can lead to confusion when it comes
time to refit the instrument.
Do not directly contact the poles of the Octopole. The Octopole may become
misaligned.