Figure 55 – Plugged Sample, Background, and Calibration Ports
3. Enter the Main Menu Analyser State Status Menu Pressures & Flow Menu and
compare the cell and the manifold pressures.
4. Allow 5 minutes for the pressures to stabilise.
5. If the two pressures are within 10% of each other, then the leak check has passed.
6. If the pressure readings (cell and manifold) are more than 10% different, perform a pressure
calibration (refer to Section 5.6) After this is completed repeat the quick leak test, if this fails
again then perform a full leak check (refer to Section 6.4.5).
7. Enter Main Menu Service Menu Diagnostics Valve Menu. Then set sample/cal to
Open. Follow steps 3 and 4 if the two pressures (cell and manifold) are within 10% of each other
the leak check has passed.
8. Enter Main Menu Service Menu Diagnostics Valve Menu. Then set sample/cal to Open
and Internal Zero/cal to Open. Follow steps 3 and 4 if the two pressures (cell and manifold) are
within 10% of each other the leak check has passed.
9. If any of the tests failed or if you suspect a leak then perform a manual leak check.
6.4.5 Full Leak Check
Equipment Required
Source of vacuum (pump)
Vacuum gauge
Shut off valve
Swagelok ¼” blocker nuts
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