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Link to full procedure: FACET S20 DPS Troubleshooting - 03-04-2022.pdf
How to silence the roughing pump alarms in the tunnel
The roughing pumps will make an audible alarm if they are displaying a warning or alarm state. This is how to
Ideal method:
To check the cause of the alarm:
- Open the "DPS full schematic" from the LI20 Vacuum Epics page.
- For each roughing pump - click on the pump icon, then on "More..."
- You should see a list of all the warning and alarm states. If any of these has light beside it, then that is warning/alarm that is causing the problem.
- Make an Elog entry with the warning and alarm states that you find
If you understand the cause of the alarm and the implication of clearing it, then you can go back to the roughing pump control window (with the speedometer) and click on "Reset" to clear the warning/alarm state. You may have to hit reset a few times if it doesn't stop beeping on the the first try.
Alternative method:
If you do not understand why the particular error message is being displayed or if you are not comfortable clearing the error, but you need to stop the incessant noise from driving you crazy - then you can simply unplug the handheld controller panel that sits beside the roughing pumps under the light pipe. If you chose this path, then make all reasonable efforts to ensure that the controller panel is eventually reconnected.
In all cases - please notify the appropriate authorities that you have done something!
Troubleshooting if pumps keep turning themselves off
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