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

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80 Troubleshooting and Maintenance Guide
4
Not Ready Symptoms
The Inlet Pressure or Flow Fluctuates
A fluctuation in inlet pressure causes variations in the flow rate
and retention times during a run. Do the following:
• Check if the gas purifier or gas generator is operating at or
near capacity.
• Check the supply gas for sufficient delivery pressure.
• Verify that the supply pressure regulator is functioning
properly.
• Check for leaks. (See Chapter 8 , “Checking for Leaks”.)
• Check for large restrictions in the inlet liner or split vent
trap.
• Verify that the correct liner is installed.
• Check for a restriction in headspace, purge and trap, and
any other external sampling devices.