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2 Install the new LTM column module that requires conditioning. See
3 If necessary, install a new liner and septum in the inlet before powering on
4 Power on the instrument. The MSD transfer line should be capped off. If the
5 Connect a new guard column to the inlet. See
6 Connect this guard column to the LTM column module inlet union. See
7 From the ChemStation, edit the column configuration for this LTM module
8 Turn on the inlet, set its mode to splitless, and set the column flow to
9 Check for leaks.
Do not heat the column without a flow of carrier gas. You will damage the column.
C A U T I O N
10 Allow the carrier gas to flow through the column for 5 minutes without
11 Close the LTM module door.
12 Set the guard column enclosure temperature to 10°C below the maximum
13 Ramp the LTM column temperature at 5 °C/minute to 10 °C above your
14 Once the LTM column temperature exceeds 80 °C, inject 5 µL methanol into
5975T LTM GC/MSD Operation Manual
Install the LTM Module Assembly in the Instrument"
the instrument.
analyzer was vented, pump down the instrument. See
page 73.
Column in the Split/Splitless Inlet"
Attach the Guard Columns to the LTM CFT Unions"
and change the carrier gas type configured if switching to a different
carrier gas supply.
30 cm/s.
heating the LTM column or guard column enclosure.
LTM column temperature.
highest analytical temperature.
the inlet. Repeat two more times at 5-minute intervals. This helps remove
any contamination from the column before it is installed into the GC/MSD
interface.
Installing LTM Columns
on page 42.
"Pumping Down"
"To Install an Inlet Guard
on page 33.
on page 52.
2
"To
on
"To
57
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