Source maintenance 7-9
See “Component hardware troubleshooting” on page 8-2.
If cleaning the inner source chamber assembly fails to increase signal
sensitivity, also clean the outer source assembly. See “Outer source
maintenance” on page 7-38.
Cleaning the chamber assembly involves these tasks:
• Withdrawing the chamber assembly from the instrument (see
page 7-10).
• Removing the chamber assembly from the source handle (see page 7-14).
• Disassembling the chamber assembly (see page 7-15).
• Cleaning ion burn off the chamber assembly components (see page 7-21).
• Ultrasonically cleaning the chamber assembly components (see
page 7-23).
• Assembling the chamber assembly components (see page 7-24).
• Fitting the chamber assembly to the source handle (see page 7-32).
• Inserting the chamber assembly in the instrument (see page 7-33).
Required materials
• Lint-free cotton gloves.
• Nitrile gloves.
• Needle-nose pliers or tweezers.
• 1/8-inch (3.2-mm) wrench.
• Jeweler’s screwdriver.
• “Clutch pencil” tool (provided in the tool kit).
• Lapping paper, 9-mµ and 12-mµ grades.
• An appropriately sized glass vessel in which to completely immerse
components when cleaning. Use only glassware not previously cleaned
with surfactants.
• Solvent for ultrasonic cleaning:
– Propan-2-ol [isopropyl alcohol (IPA)].
– Methanol.
– Dichloromethane.
– Acetone.
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