Thermo Finnigan LTQ - Cleaning the Q00 Ion Guide; Shutting down the System; Removing the Ion Max Ion Source

MS Detector Maintenance
Cleaning the Q00 Ion Guide
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4-22 ______________________ Finnigan LTQ Hardware Manual _______________________
4.4 Cleaning the Q00 Ion Guide
An accumulation of chemicals on the surfaces of the Q00 quadrupole and
lens L0 forms an insulating layer that can modify the electrical fields that
control ion transmission. Therefore, clean ion guide components are essential
for the proper operation of the instrument. The Q00 quadrupole and lens L0
require cleaning less often than the tube lens and skimmer. The frequency of
cleaning depends on the type and quantity of the compounds that you analyze.
To clean or replace the Q00 ion guide components, do the following:
• Shut down and vent the system
• Remove the Ion Max ion source
• Remove the ion source interface
• Remove the Q00 ion guide
• Disassemble the Q00 ion guide
• Clean Q00 quadrupole and lens L0
• Reassemble the Q00 ion guide
• Reinstall Q00 ion guide
• Reinstall the ion source interface
• Reinstall the Ion Max ion source
• Start up the system
Shutting Down the System
Shut down and vent the system as described in the topic Shutting Down the
System Completely in the System Shutdown, Startup, and Reset chapter.
Go on to the next topic: Removing the Ion Max Ion Source.
Removing the Ion Max Ion Source
You need to remove the Ion Max ion source to access the ion source interface
and Q00 ion guide. Remove the Ion Max ion source from the front of the MS
detector as described in the topic Removing the Ion Max Ion Source on
page 4-12.
Go on to the next topic: Removing the Ion Source Interface.
CAUTION. Make sure that the LTQ power cord is unplugged before you
proceed.