5-30 Maintenance Procedures
Cleaning the ion block, isolation valve, and extraction
cone
The ion block and extraction cone must be cleaned if cleaning the sample cone
and gas cone fails to increase signal sensitivity.
Removing the ion block assembly from the source assembly
Required materials:
• Chemical-resistant, powder-free gloves
• 6-mm Allen wrench
To remove the ion block assembly
1. Vent and shut-down the instrument (see the mass spectrometer’s online
Help for details).
2. Open the instrument’s access door.
3. Open the source enclosure door by releasing both spring-clips and
lowering the door towards you.
Warning: The source components can be contaminated with
biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves while performing this
procedure.
Warning: The source can be hot. To avoid burn injuries, allow it
to cool for at least 30 minutes before proceeding.
Warning: To avoid puncture wounds, take great care while
working with the source enclosure door open if one or both of
these conditions apply:
• An ESI probe is fitted (the probe tip is sharp).
• A corona pin is fitted (the pin tip is sharp).
Caution: Do not apply any downward force to the source
enclosure door while the door is open.
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