M-AERI Daily Preventative Maintenance Procedure – SAIL

Instrument: M‑AERI
Starting Date: 1 July 2021
Instrument Mentor: Jonathan Gero
Facility: AMF‑M2
PM Frequency: Daily

Hardware checks:

Physical check of instrument:

  • Check for any damage
  • Check that the 3 TEC fans are operational
  • [If hatch open] Clear any debris / water / ice accumulation inside the front-end
  • [If hatch open] Check that the sky and side fields-of-view are clear of obstructions (e.g. spider webs, ice)
  • [If hatch open] Check that the mirror drum is rotating freely
  • [Winter] Check for ice buildup, especially around the hatches

Inspection of hatch state:

  • Verify that the hatches are in the correct state (open/closed) appropriate to the precipitation
    • If they are not, check on the FTSW display if a rain sensor has been triggered
      • outsideRainSensor=0 or insideRainSensor=0 indicates a triggered rain sensor
    • Clean the rain sensor with water or alcohol, or troubleshoot as needed
    • Note that software outages may also cause the hatch to close (see software troubleshooting)
  • Verify that the hatches are either open or closed all the way (apply grease to slots if necessary)

Software checks:

Ingest:

  • Check that Ingest is running in the black cygwin window, scrolling, displaying scene numbers (e.g. S42) (see software troubleshooting)

FTSW:

  • Acquisition tab:  Check the 2 graphs (blue & red) of AERI spectra are displayed and updating (see software troubleshooting)
  • Monitoring tab:  Check that all status boxes are green (see software troubleshooting)
  • Check the interferometer humidity box (replace desiccant if needed)