Thermo Finnigan LTQ - Cleaning the Q00 Ion Guide Components; Reassembling the Q00 Ion Guide; Reinstalling the Q00 Ion Guide

MS Detector Maintenance
Cleaning the Q00 Ion Guide
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4-26 ______________________ Finnigan LTQ Hardware Manual _______________________
Cleaning the Q00 Ion Guide Components
Use the following procedure to clean the Q00 quadrupole and lens L0.
1. With a soft toothbrush or lint-free swab, scrub the part with a solution of
detergent and water.
2. Rinse the part with tap water to remove the detergent.
3. Rinse the part with distilled water.
4. Place the part in a beaker and immerse it completely in HPLC-grade
methanol. Move the part up and down in the methanol for 15 s.
5. Remove the part from the methanol bath; then rinse it thoroughly with
fresh methanol.
6. Dry the part with a rapid stream of nitrogen gas.
7. Inspect each part for contamination and dust. If necessary, repeat the
cleaning procedure.
Go on to the next topic: Reassembling the Q00 Ion Guide.
Reassembling the Q00 Ion Guide
Reassemble the Q00 ion guide as follows:
1. Insert the Q00 quadrupole through the front of the Q00 ion guide cage
until it seats in the cage.
2. Insert lens L0 through the rear of the Q00 ion guide cage until it seats in
the cage.
3. Carefully reconnect the leads to the lead pins on the Q00 quadrupole and
lens L0 as shown in Figure 4-11.
Go on to the next topic: Reinstalling the Q00 Ion Guide.
Reinstalling the Q00 Ion Guide
Reinstall the Q00 ion guide in the vacuum manifold as follows:
1. Insure that the two 2.148-in. O-rings (P/N 00107-15542) are properly
installed on the rear of the Q00 ion guide cage.
Note. Wear clean gloves to handle the parts after you clean them in
methanol.
Caution. Be careful not to bend or break the lead pins on the Q00
quadrupole.