PerkinElmer Clarus SQ 8 MS Series, Hardware Manual

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Maintenance
93
12. The column is now installed the MS may be pumped down. Confirm that the
proper vacuum level is reached (on the TurboMass software Tune Page).
13. After initially heating the GC oven through one or two analysis cycles, the
column nut may loosen. Re-tighten the column nut. After re-tightening, the
column nut should not loosen any more.
Alignment Using the 10 mm Positioning Gauge Tool
CAUTION
ATTENTION
To prevent contamination of the mass spectrometer, always wear clean,
lint-free, powder-free nitrile
, nylon, or PVC gloves when handling the
part of the capillary column that will be inserted into the MS Transfer
Line. Never touch these parts with ungloved (bare) fingers, as this will
introduce contaminants into the system.
Pour éviter la contamination du spectromètre de masse, porter toujours
des gants de nitrile, de nylon ou de PVC propres, exempts de peluches
et sans poudre lors de la manipulation de la partie de la colonne
capillaire qui sera insérée dans la ligne de transfert MS. Ne touchez
jamais ces pièces avec des doigts non agglomérés, car cela introduira
des contaminants dans le système.
NOTE: The 10 mm positioning gauge tool is supplied with the instrument.
1.
Slide an injector septum over the outlet end of the capillary column to use it as a
positioning indicator aid. Slide the septum approximately 40 mm up the column.
2.
Slide a 1/16 inch column nut over the outlet end of the column.
3.
With the tapered end facing towards the column nut, slide a graphite/vespel
ferrule over the outlet end of the column. See Figure 14.
4.
Using the edge of a wafer scribe, score the outside surface of the column
perpendicular to its length approximately 2 inches from the end and carefully
break it off and discard the cut off piece of column. Jagged or angled cuts
should be avoided. See Figure 15 for examples of good cuts and bad cuts.
5.
Use a lint-free wipe pre-soaked with a small amount of methanol to wipe the
outside of the column a few times to remove surface contamination.