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  1.  Make sure the outside gHe tanks are above ~30psi.
  2.  Check LCW Temperatures on the meters right next to the stair-case and also via the following link.
    Dark Yellow line: T_in
    Purple line: T_out
    https://e906-gat1.fnal.gov/data-summary/e1039/slow-cont-acnet.php

    If T_in > 95F or T_out > 115F, do not start the QT system. It will see temperature alarms on the compressors (see this page how to clear alarms for compressors)

  3.  Below are set of images of the operating configuration of valves on HR3


    Important ones to keep open:
    V30 (gHe-in to purifier)
    V31 (gHe-out from purifier)
    Vliqv1 (or the yellow path in the following diagram)


  4.  Make sure the purifier Dewar LN2 space is between 70%-90% (see this page to see how to fill LN2)



  5.  Open V9a and V21a on Purifier screen on the PLC: This is because the purifier is currently operating in "Manual" mode when the entire system is on "Auto"

    Image Added