Clean and Verify the Gas Line
Unit [n] > Diagnostics
Always clean the gas lines and verify there are no leaks at the connections after a gas cylinder is connected. This test examines the gas line from the analyzer to the gas cylinder, then from the analyzer to the regulator shut-off valve. A report is generated at the completion of the test to verify that it has passed or failed. Causes and corrective action for a failure are provided.
Before beginning, confirm that the state for valves and the low pressure gauge are as follows:
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- Click the down arrow to the right of the Test field and select Gas Line Clean and Verify # Rev [n]. This procedure uses the analysis gas as an example. Select Clean and Verify Helium Gas Line Rev [n] if the helium cylinder is being verified.
- Select Report after test and select Preview as the destination. Resize the window if this option does not display.
- Click Start. From the View drop-down list, select either Operation, Instrument Log, or Instrument Schematic.
- A series of prompts display requiring operator response. The length of time a test will run is also indicated.
- A popup window indicates the test is complete. Click OK.
- Click the Instrument to Regulator Shut-off Valve -1 tab to display its report.
The Leak Rate field should read Passed indicating the gas line from the analyzer to the regulator is clean and leak-free.
If the Leak Rate field indicates Failed, a leak is indicated. Check the connections from the analyzer to the gas regulator valve. Tighten as necessary, then run the test again.
- Click the Instrument to Gas Bottle Shut-off Valve - 2 tab to display its report.
The Leak Rate field should read Passed indicating the gas line from the analyzer to the regulator is clean and leak-free.
If the Leak Rate field indicates Failed, a leak is indicated. Check the connections from the regulator shut-off valve to the gas cylinder shut-off valve. Tighten as necessary, then run the test again.
- Click the Gas Pressure Test - 3 tab to display its report.
On the report, the Minimum field should read Passed indicating all valves are in the proper state for operation.
If the Minimum field indicates Failed, one or more valves is not in the proper position. Set the valves as shown at the beginning of this section and ensure the appropriate pressure is displayed on the low pressure gauge.
If running the test again, close the gas cylinder valve before starting the test.
- Click Close to close the test report. Click Close again to close the test.
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