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  1.  Check Operational Configuration of all the valves and ensure all of them are in the nominal configuration (if not, contact the expert(s) before starting the cooldown)
  2.  Check the LCW supply and ensure there is no issues with LCW parameters.
  3.  Check all the coldhead compressors' screens and ensure there are no "ALARMS" on their display panels. Also, check the two gauges and ensure both gauges show ~200 psig (these are inlet, outlet pressure readings in/out the coldheads).
  4.  Switch the LIquefier to Manual + Liquefy mode (Manual + Idle mode is also the same because Liquefy/Idle option has no effect when it is in the 'Manual' mode)
  5.  Ensure the dewar pressure alarm threshold is around 0.2 psi (navigate to the Liquefier 'Settings' to check that).
  6.  Set the inlet flow to 60slm: enter 60slm on FC501(A/B)Q (then press enter)
     
  7.  Option 1: Set the outlet flow for the maximum flow by opening SVV(A/B) and the manual hand valve bypassing the SVN(A/B). You will observe the Dewar pressure will drop down to ~0.8psig and get stable.
     Option 2: Open VJV(A/B), VJVT, open Magnet Bypass control valve to 70% have the flow through the magnet. You will observe the Dewar pressure will drop down starting from ~3.2psig.
     
  8.  Skip this step if you are cooling down using the transfer stingers via magnet path
    Option (1):  Open the magic valve NV501A/B completely (~9 turns).
     Option (2): Open SV503(A/B) and keep the magic valve (at ~1/2 a turn)
     (see pictures on Supply Manifold for the Liquefiers)
  9.  Turn ON the cold heads manually on "Helium Compressors" screen
     
  10.  Move the transfer stinger a few inches up (to avoid touching the bottom).
  11.  It will take about 2 hrs and 30 mins for the cold head temperatures to reach ~5-6 Kelvin.
     
  12.  Monitor A,B's TI502,TI504, TI506, TI508, TI510 and TIDA/B and you will observe all of them will have a slope towards 4 Kelvin (TIDA/B will be a bit slow compared to coldhead temperatures)
     Note: This is for option (2) cooling via the magnet path.
  13.  Once cold head temperatures reach 4-5 Kelvin, and TIDA/B reach their lowest (below 10 Kelvin), and also FMR flow started reducing, then,
    Option (1):  Transition to have the outflow through SNVB (with the flow controller), and stop the flow through  SVVA/B.
                        Close SVVA/B and open SVNA/B and set FCA/BQMC to 60slm.
    Option (2): in the step (4): Close VJVA, Close VJVB, Close VJVT, and open VPC. Then, Open SVNA/B and set FCA/BQMC to 60slm.
  14.  Let/Ensure the Dewar pressures are above ~0.5 psig on both Dewars (this is to not let the Liquefiers go to the "ALARM" mode).
  15.  Let it run in this configuration: in-flow 60slm, out-flow 60slm (via SVNA/B), cold-heads are running, mode: run+manual+liquefy
  16.  You should expect ice/frost on Dewar neck during this phase, and you will have to use the heat gun to melt the frost.
  17.  When you start seeing FCBI start going down while FC501B inlet is 60slm, then lower the value of FCBQMC step by step based on the FCBI.
  18.  Once you bring FCBQMC down < 5slm, then check the Liquefier Settings screen to ensure the following values.
  19.  Switch the Liquefier to Run + Auto + Liquefy mode
  20.  Related to Step #5:
     Option (1): Bring the magic valve position for optimizing for production ( open ~1/2 a turn)
     Option (2): Close SV503 (A/B) and leave the magic valve open ~1/2 a turn (original position)
  21.  When the liquid starts accumulating, move the transfer stinger all the way down.

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