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If a roughing pump will not reset an error message, turn power off on breaker
panel for 30 seconds, then power back on. More status info is available on the hand held
controllers in the FKG racks.
Pump redundancy
OLD STUFF BELOW
In the case of pressure rise on gauges 3259 and 3291 due to a failure of one or more pumps in the DS-DPS system, this procedure should be used to isolate the beamline and stop the pressure from rising further. See the attached document for the full procedure.
In most cases this will isolate the beamline and allow the other remaining operating stage to pump down the beamline and allow operations to commence.
Link to full procedure: FACET S20 DPS Troubleshooting - 03-04-2022.pdf
Troubleshooting if pumps keep turning themselves off during startup
At the moment you cannot restart a turbopump with the DPSvacWatcher running. It will detect that things aren't in the nominal operating state and will stop the pump (or insert the foreline valve). This will be signaled by an entry in the elog.
Stop the watcher, restart the pumps, then restart the watcher once the valves are in a good state. Alternatively, once a turbo is tripped off then you have ~10 minutes while the watcher ignores that stage. So if the turbo is shut off by the DPS when restarting, just try to restart again a second time within the 10 minute window and you should be fine.
Step-by-step troubleshooting guide for vacuum issues
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If you get to the green “Everything looks good” box, then this stage appears to be in a good state.
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The forelines are reconfigurable to overcome the failure of a pump, in most cases. But this should only be attempted by an expert that knows what they are doing because doing this in the wrong order can lead to problems.
If you reach this state and cannot continue or experience any difficulties – please call Doug Storey at SLAC extension # 3020, or cell # 650-656-5940.
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