June 28, 2016, 715003956 Rev. C
Page 36
Figure 3–6:
Ion block and calibration pin
2.
Immerse the sample cone, entrance-aperture carrier, and ion block in separate glass
vessels containing 1:1 methanol/water.
Note:
Do not clean the consumable components of the aperture assembly such as the
entrance-aperture seal and entrance-aperture disc. Instead, replace these consumables
when performing general maintenance, the components are visibly damaged, or the
performance or cleanliness of the machine is compromised.
Tip:
If the components are obviously contaminated, use 45:45:10 methanol/water/formic
acid.
3.
Place the vessels in the ultrasonic bath for 30 minutes.
4.
If you used formic acid in the cleaning solution, do as follows:
a.
Rinse the components by immersing them in separate glass vessels containing water,
and then place the vessels in the ultrasonic bath for 20 minutes.
b.
Remove any residual water from the components by immersing them in glass vessels
containing methanol, and then place the vessels in the ultrasonic bath for 10 minutes.
5.
Carefully remove the components from the vessels, and blow-dry them with inert, oil-free
gas.
6.
Inspect each component for persisting contamination, and if contamination is present, do as
follows:
a.
Use the wash bottle containing 1:1 methanol/water to rinse the component over the
large beaker.
b.
Blow-dry the component with inert, oil-free gas.
7.
Inspect each component for persisting contamination.
Important:
If contamination is present on the sample cone or entrance-aperture carrier,
dispose of the component, and obtain a new one before reassembling the sampling cone
assembly.
Notice:
To avoid recontaminating the components, wear clean, chemical-resistant,
powder-free gloves for the rest of this procedure.
Calibration pin
Ion block