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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

 

Quote:

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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