MS Detector Maintenance
Cleaning the Q0 and Q1 Ion Guides
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4-34 ______________________ Finnigan LTQ Hardware Manual _______________________
2. Install the Q0 ion guide as follows:
a. Insert lens L1 into the opening in the baffle (Figure 4-14).
b. With one hand, hold the Q0 quadrupole against the lens L1; with the
other hand, install the Q0 ion guide mounting bracket so that the
quadrupole is held between the mounting bracket and the lens L1.
c. Tighten the two thumb screws that hold the Q0 ion guide mounting
bracket to the top cover plate.
3. Reconnect the electrical leads to the Q0 quadrupole, lens L1, gate lens,
and Q1 octapole according to the wiring diagram shown in Figure 4-15.
Go on to the next topic: Cleaning the Ion Detection System.
Caution. Be careful not to bend or break the lead pins on the Q0 quadrupole
and Q1 octapole.
Note. Check all leads and ensure that they are secure and that they go to the
proper electrodes.
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