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Entry  Sun Nov 26 19:38:40 2017, Steve, Update, VAC, TP3 drypump replaced again after_replacement.png
    Reply  Thu Nov 30 10:38:39 2017, Steve, Update, VAC, annuloses are not pumped AnnulosesNotPumped.png
Message ID: 13459     Entry time: Thu Nov 30 10:38:39 2017     In reply to: 13454
Author: Steve 
Type: Update 
Category: VAC 
Subject: annuloses are not pumped 

Annuloses are not pumped for 30 days, since TP2 failed.  IFO pressure 7e-6 Torr it,  Rga 2.6e-6 Torr

Valve configuration: Vacuum Normal as TP3 is the forepump of Maglev, annuloses are not puped at 1.1 Torr

TP3 50K rpm,  0.15A  24C, foreline pressure 16.1 mTorr



The TP3 foreline pressure was 4.8 Torr, 50K rpm 0.54A and 31C........Maglev rotation normal 560 Hz.......    IFO pressure 7.2e- 6 Torrit was not effected

V1 closed ......replaced drypump.........V1 opened

IFO 6.9e-6 Torrit at 19:55, TP3fl 18 mT,  50Krpm 0.15A 24C

VM1 is still closed



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