5-42 Maintenance Procedures
5. Inspect each component for persisting contamination. 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.
6. Inspect each component for persisting contamination. If contamination
is present, dispose of the component, and obtain a new one before
reassembling the ion block assembly.
Assembling the source ion block assembly
Required materials:
• Chemical-resistant, powder-free gloves
• 1.5-mm, 2.5-mm, and 6-mm Allen wrenches
• Needle-nose pliers
• Isopropyl alcohol in small container
To assemble the ion block assembly
1. Fit the extraction cone seal to the ion block.
2. Fit the extraction cone retainer to the extraction cone.
3. Fit the extraction cone retainer and extraction cone to the ion block.
4. Use the 2.5-mm Allen wrench to tighten the captive screw securing the
extraction cone retainer.
5. Fit a new blanking plug seal to the ion block blanking plug.
Caution:
• To avoid recontaminating the ion block assembly, wear clean
chemical-resistant, powder-free gloves during this procedure.
• The sample cone is fragile. Never place it on its tip; always place it
on its flanged base.
Caution: Take great care not to damage the extraction cone
aperture when fitting the extraction cone to the ion block.
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