Purifier's  Water Filter Element Replaced
      -------------------------------------------


                                     Original Rev.  7-June-2022
                                      Current Rev.  8-June-2022


On 7-June-2022 the water filter for the Purifier was replaced.

 - Immediately before the Purifier
   water filter replacement its
   cooling water pressures were:    Supply 71 psi  Return 70 psi

 - With new filter element and only the Supply
   valve open the pressures were:   Supply 78 psi  Return 79 psi

 - With new filter element and only the Return
   valve open the pressures were:   Supply 70 psi  Return 70 psi

 - With new filter element and both
   valves open the pressures were:  Supply 76 psi  Return 72 psi


 - Changing the water filter element for the Purifier did
   not change any of the pressure readings on the cooling
   water circuit for the Main Compressor.  The Main
   Compressor's pressure readings immediately before and
   after the Purifier's water filter change were:

           Input to the Supply Pump:  70 psi
        Output from the Supply Pump:  84 psi
           Input to the Return Pump:  60 psi
        Output from the Return Pump:  73 psi

   So at this time there was about a 24 psi difference between
   the Input and Output of the Main Compressor's Heat Exchanger.

   The Input to the Supply Pump was about 8 psi below the
   static pressure in the Supply line.

   The Output of the Return Pump was about 3 psi above the
   static pressure in the Return line.


 - To change the Purifier's water filter the Purifier was
   turned Off by tapping the Off button on the right-hand
   side of its touch screen display.   To turn the Purifier
   back On I just tapped the On button on the right-hand
   side of its touch screen display.

 - The Purifier was turned Off for a total of about 25 minutes.
   When it was turned back On it was in  Mode 21  "Cooldown"
   with cold temperatures of  112  and  78.     After about
   1 minute it moved to  Mode 31  "Transition to Purification".


 - The previous change of the Purifier's water filter was on
   31-March-2022.  The following is a sketch of the Purifier's
   history since then.

                              Cold         Cooling
        Date      Mode    Temperatures    Diff psi
      --------    ----    ------------    --------

      31-Mar-22  Dan replaces the Purifier's water filter

       5-Apr-22    41       120   77         6
      10-Apr-22    41       123   77         6
      13-Apr-22    41       124   79         5

   14,15-Apr-22  Reza pumps out the Purifier's vacuum jacket

      16-Apr-22    41        81   56         6
      22-Apr-22    41        81   57         6
       5-May-22    41        83   57         5
      17-May-22    41        86   57         4
      25-May-22    41        88   57         3
       3-Jun-22    41        91   57         2
       6-Jun-22    41       103   59         1
       7-Jun-22    41        99   57         1


     The  "Cooling Diff psi"  is the difference between the
     Supply and Return pressure of the cooling water for the
     Purifier.  This table is a sample of the daily readings
     taken while the Purifier is in  Mode 41  normal  "Steady
     State Production".


 - In the 20 hours since the Purifier's water filter
   replacement we have not yet collected enough recovered gas
   for the Purifier to actually start up again in  Mode 41
   "Continuous Purification"  -  so I have not yet seen its
   cold temperatures  while running in Mode 41.   Currently
   it is just waiting in  Mode 42  "Low input gas pressure"
   waiting  for some gas to purify and its cold temperatures
   are  132  and  57.