Agilent Technologies 5975T LTM GC/MSD, Troubleshooting And Maintenance Manual

Page: 30 / 270

30 Troubleshooting and Maintenance Guide
2
Concepts and General Tasks
Configurable Items to Always Keep Current
Certain configurable items in the GC must always be kept
current. Failure to do so will lead to reduced sensitivity,
chromatographic errors, and possible safety concerns.
Column configuration
Reconfigure the instrument every time a LTM column is
trimmed or changed. Also verify that the data system reflects
the correct column type, length, id, and film thickness. The
instrument relies on this information to calculate flows. Not
updating the instrument after altering a column causes
incorrect flows, changed or incorrect split ratios, retention time
changes, and peak shifts.
Automatic Liquid Sampler configuration
Keep the Automatic Liquid Sampler (ALS) configuration
up-to-date to ensure proper operation. ALS items to keep
current include injector position, installed syringe size, and
solvent and waste bottle usage.
Gas configuration
Reconfigure the GC every time the gas type is changed. If the GC
is configured to a gas other than what is actually being
plumbed, incorrect flow rates will result.
WA R N I N G
Always configure the GC appropriately when working with
hydrogen. Hydrogen leaks quickly and poses a safety concern if
too much of it is released into the air or into the GC oven.