Dispatchers |
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Device | Description | KTL Service.Keyword | Condition | Value | Units | Do Not Alarm if these also in alarm: | Notes/Rationale | Impact Description | Action |
Green Instec Cold Head Temperature | kpfgreen.currtemp | warmer | -145 | Celsius | Aux Rack PDU TBC, Aux Rack Network Switch | Value chosen is warmer than Chris' potential trial set-points | Thermal control of detector has been lost. | email Chris, Kodi, Steve, Will and Brad | |
“Barebones” Autofill System | Green LN2 Dewar Weight | kpflab.greenweight | < | 54 | lbs | In practice should likely be < 52 lbs (the current threshold on the grafana plot). However, setting it higher at 54 allows us to easily test the email alert system as we should get one around 10:45am. | The autofill system has not automatically refilled the dewar holding LN2 used to cool detector. | email Chris, Kodi, Steve, Will and Brad | |
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Device | Description | KTL Service.Keyword | Condition | Value | Units | Do Not Alarm if these also in alarm: | Notes/Rationale | Impact Description | Action |
Vacuum Pump Bearing Temperature | kpfvac.pump_temp | > | 55 | C | Vac Cart PDU, Vac Cart Network Switch | Gives some margin before the pump's internal alarm at 60 C goes off. | Vacuum pump temperature is high. | email Chris, Kodi, Steve, Will and Brad | |
Vacuum Pump Frequency | kpfvac.pump_freq | < | 990 | Hz | Vac Cart PDU, Vac Cart Network Switch | Nominal value is 1000 Hz. This catches a pump slow-down but gives a 10 Hz buffer for minor fluctuations | The vacuum pump is slowing down, acting erratic, or turning off. Pressure in the main vacuum chamber is not being actively maintained. | email Chris, Kodi, Steve, Will and Brad | |
Vacuum Chamber Pressure | kpfvac.vch_hivac | > | 3.0E-5 | Torr | Vac Cart PDU, Vac Cart Network Switch | This is our operational pressure | The main vacuum chamber pressure is higher than our operational pressure requirement. | email Chris, Kodi, Steve, Will and Brad | |
https://exoplanets.atlassian.net/wiki/pages/resumedraft.action?draftId=1021215002 | Basement Relative Humidity | kpfmet.relh | < | 2033 | % | Vac Cart PDU, Vac Cart Network Switch | Provides warning to observatory staff that basement humidity is low. | Low RH can impact the lifetime of electronic components and increase ESD voltages. | email to relevant observatory staff |
Stepper Motors | TBC | TBC | TBC | TBC | Monitor current draw to ensure motors are not drawing current unnecessarily. | These motors are heat sources when running; we do not want them drawing power unless we are using them. | |||
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