Varian 450-GC, User Manual

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Installation Installation
Varian, Varian, Inc. Inc. User User Manual Manual 450-GC 450-GC Page: Page: 17 17
13. 13. Gently push the column into the Injector until the mark on the column is Gently push the column into the Injector until the mark on the column is
aligned with the bottom edge of the column nut.
aligned with the bottom edge of the column nut.
14. 14. Tighten the column nut by hand until it is finger-tight. Hold the column and Tighten the column nut by hand until it is finger-tight. Hold the column and
use a 5/16" wrench to tighten the column nut in place. Tighten the column
use a 5/16" wrench to tighten the column nut in place. Tighten the column
nut only enough to seal the column and hold it firmly in place.
nut only enough to seal the column and hold it firmly in place.
An optional Capillary Column Quick Connect Kit An optional Capillary Column Quick Connect Kit is available that is available that
simplifies the installation of a capillary column into Injectors and simplifies the installation of a capillary column into Injectors and
detectors. It contains split capillary column nuts, re-usable graphite
detectors. It contains split capillary column nuts, re-usable graphite
ferrules
ferrules (for (for 250 250 m, m, 320 320 m, m, 530 530 m m ID ID columns) columns) and and a a column column
depth scale. The ferrule is set on the column using this depth scale. depth scale. The ferrule is set on the column using this depth scale.
No felt pen or typewriter correction fluid is needed (The part number
No felt pen or typewriter correction fluid is needed (The part number
of the Quick Connect Kit is 03-925751-90).
of the Quick Connect Kit is 03-925751-90).
Tips for Tightening Column Ferrules Tips for Tightening Column Ferrules
Refer to the Refer to the Table 6 Table 6 below below for instructions to for instructions to tighten the capillary column nut tighten the capillary column nut
with a variety of with a variety of ferrule types. Do not over ferrule types. Do not over tighten capillary column nuts use a tighten capillary column nuts use a
new ferrule if the column does not new ferrule if the column does not seal. Over tightening capillary nuts can seal. Over tightening capillary nuts can
destroy some ferrules, destroy some ferrules, particularly graphite. particularly graphite.
Fe Ferrul rrul e e Type Type Recommendation Recommendation Comments Comments
New New graphite graphite ferrule ferrule ¼ ¼ - - turn turn past past finger-tight finger-tight
¼ - to ½ -turn ¼ - to ½ -turn past finger-tight may be past finger-tight may be
required to achieve a seal. required to achieve a seal.
Used Used graphite graphite ferrule ferrule ¼ ¼ - - turn turn past past finger-tight finger-tight
If a different size of column is used, If a different size of column is used,
more tightening may be required.
more tightening may be required.
New New graphite-Vespel® graphite-Vespel®
ferrule ferrule
¼ - to ½ -turn past finger-tight ¼ - to ½ -turn past finger-tight
May require retightening after first or May require retightening after first or
second programmed run. Over
second programmed run. Over
tightening will destroy ferrule and seal.
tightening will destroy ferrule and seal.
Used Used graphite-Vespel® graphite-Vespel®
ferrule ferrule
¼ ¼ - - turn turn past past finger-tight finger-tight Re-use Re-use only only on on same same size size column. column.
1177/1079 PTV: ¼ - to 1177/1079 PTV: ¼ - to ½ -turn past ½ -turn past
finger-tight. finger-tight.
May require retightening after first or May require retightening after first or
second programmed run.
second programmed run.
New New Vespel® Vespel® ferrule ferrule
Not recommended for 1041/1061/1093 Not recommended for 1041/1061/1093
1177/1079 PTV: ¼ -turn past finger- 1177/1079 PTV: ¼ -turn past finger-
tight.
tight.
Reuse only on same size column Reuse only on same size column
Used Used Vespel® Vespel® ferrule ferrule
Not recommended for 1041/1061/1093 Not recommended for 1041/1061/1093
Table 6: General Tightening and Re-tightening for Common Ferrules Table 6: General Tightening and Re-tightening for Common Ferrules