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Entry  Mon Nov 26 21:58:08 2018, Jon, Omnistructure, , Serial Vacuum Signals GP307_relays.jpeg
    Reply  Tue Nov 27 17:06:51 2018, Steve, Configuration, VAC, Agilent 84FS turbo installed as TP2 
Message ID: 14322     Entry time: Tue Nov 27 17:06:51 2018     In reply to: 14320
Author: Steve 
Type: Configuration 
Category: VAC 
Subject: Agilent 84FS turbo installed as TP2 

Chub & Steve,

We swapped in our  replacement of Varian V70D "bear-can" turbo as factory clean.

The new Agilent TwisTorr 84 FS  turbo pump [ model x3502-64002,  sn IT17346059 ]  with intake screen, fan, vent valve. The controller  [ model 3508-64001, sn IT1737C383 ] and a larger drypump IDP-7,  [ model x3807-64010, sn MY17170019 ] was installed.

Next things to do:

  1. implement hardware interlock to close V4 at 80% pumping speed slowdown of "standby" rotation speed, estimated to be ~ 40,000 RPM ( when Standby 50K RPM  )
  2. set up isolation valve in the foreline of TP2, with delayed start of the IDP-7 and/or use relay to power drypump.  This turbo controller can not switch off or start of the dry pump. [ Agilent isolation valve #X3202-60055, with position indicator, pneumatic actuation, 115V solenoid ]..........as a second thought, we do not need isolation valve if we go with the relay option. The IDP-7 has built in delay of 10-15 sec
  3. test performance of new turbo
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