Checking for Leaks 7
Agilent 7890 Series Troubleshooting 159
changing the source pressure is not practical, skip this step.
If there is a relatively large volume in the supply tubing
leading up to the GC, consider whether or not there could
have been a leak into the system when evaluating the test
results.
15 Monitor the pressure for 10 minutes. Use the timer by
pressing [Time] and [Enter].
A pressure drop of less than 1.0 psig (0.1 psi/min or less;
6.9 kPa or 0.69 kPa/min) is acceptable.
If the pressure drops much faster than the acceptable rate,
see “To Correct Leaks in the Cool On-Column Inlet”. Retest.
16 After the inlet passes the test, restore the GC to operating
condition.
• Restore source pressures.
• Remove any caps/plugs.
• Reinstall the column.
• Restore the correct column configuration.
• Load the operating method.
To Next Page
Loading...
Need help?
General
