<!-- Title: 23:55:10  Wed Jul 11 2001 -->
<!-- Crewchief: jim loskot -->
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JUST ME, MYSELF, & NO IRENE


<!-- Date: Thu Jul 12 00:20:52 2001 -->
READINGS AND TOURS ALL IS GOOD BUT THE STORAGE SHED TOP IS IN TROUBLE AGAIN. -- RESET AND CLEARED.
<!-- Author: JIM -->


<!-- Date: Thu Jul 12 06:20:51 2001 -->
Noticed COT cold trap still has liquid? (13.6%), but CT_BYP (bypass) valve is open. Checked alarm page, and Operation status is OFF but the alarm status is ON.  Will talk to Del about this later today.
<!-- Author: Steve -->


<!-- Date: Thu Jul 12 06:26:38 2001 -->
<table><tr><td><a href=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-205&button=yes target='xxx' onclick='jswindow()'; align=top><img src=/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-206  width='300' align='top'></td><td>Stopped filling at 0034 hours.</a></td></tr></table>
<!-- Author: Steve -->


<!-- Date: Thu Jul 12 06:51:37 2001 -->
Solenoid just tripped. Claim is ground fault. As such, I hesitate to bring it back up. Notified SciCo.
<!-- Author: Steve -->


<!-- Date: Thu Jul 12 06:58:48 2001 -->
<center><a href='/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-207&button=yes' target='xxx' onclick='jswindow()'><img src='/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-208' ></a><a href='/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-209&button=yes' target='xxx' onclick='jswindow()'><img src='/cgi/elog/det-system-elog.pl?nb=cryo-gas&action=view&page=-210' ></a></center>
<!-- Author: Steve -->
<!-- Comment: Thu Jul 12 06;59;23 comment by...Steve -->
Quadlog permit denied. Possible ground fault.


<!-- Date: Thu Jul 12 08:37:03 2001 -->
Rob, Bob, and Walt are here hunting for a ground fault.
<!-- Author: Steve -->


<!-- Date: Thu Jul 12 08:55:28 2001 -->
Opened fast dump switches and HIPOTed solenoid to 500V on both polarities.  Resistance to ground was over 50 MegaOhms on both polarities.
<!-- Author: Sanders -->


<!-- Date: Thu Jul 12 10:55:44 2001 -->
The pressure transducer on the west side air supply for the neumatics (PT_GSAIRWEST) was tested by Jerry Domoleczny this morning and he found it to be well within calibration range.Last week this transducer red bad on the computer read out. I will check the integrity of the wiring as a next step. I have installed another transducer in it's place that I got from Jerry.
<!-- Author: KC -->


<!-- Date: Thu Jul 12 11:10:13 2001 -->
<pre>Results of ground fault hunt: 
 
Solenoid was fine, it was powered to 1KA and brought down. 
(previous entry has the numbers resulting from the hi-pot) 
 
There was 3500KOhms at 5V to ground. Walt said it acted like a voltage that one would see between dissimilar metals. 
 
Power supply was 19KOhms to ground. 
 
No conclusion.  The PLAN is to run on nights and over the weekend and see what happens. 
</pre>
<!-- Author: Steve -->
<!-- Comment: Thu Jul 12 15;56;59 comment by...SG -->
<table border=0><td><tr><td bgcolor=#e0e030><pre>Correction: there was 3500 Ohms at 5 volts to ground. </pre></td></tr></td></table>
<!-- Date: Thu Jul 12 11:36:31 2001 -->
Del and I just changed the CMX (Miniskirt) gas from A/E to N2 on the 730 platform.
<!-- Author: KC -->


<!-- Date: Thu Jul 12 14:30:24 2001 -->
KC and I removed the cold trap DPs (panel and all). Jerry has everything and will calibrate them. 
<!-- Author: Steve -->


<!-- Date: Thu Jul 12 15:47:49 2001 -->
We have removed the vacuum pump from out of the notch and connected a vacuum line directly from the utility manifold to the double 0-ring manifold. The hose is routed in such a way that it is captured and cannot get near the bus. We should remember to ask Steve Hahn if the chamber noise goes away, huh? 
Also, everything looks good up there to power up tonight.
<!-- Author: Steve & KC -->



<!-- Date: Thu Jul 12 16:07:32 2001 -->
<pre>Modified SVX heater algorithms.   Problem is that the Silicon crowd has lowered temp of svx cooling from 10 degrees C to -2.5 degrees C.  They ultimately want to get to -5 degrees C.   The heaters on the inner bore of the COT was having trouble maintaining the temp to the specified set points.     I changed the on/off block to allow the heaters to come  on more frequently so that it could keep up.   So far it seems to be working</pre>
<!-- Author: RR+DA -->


<!-- Date: Thu Jul 12 17:21:39 2001 -->
Started pumping the Watt can.
<!-- Author: Steve -->


<!-- Date: Thu Jul 12 21:05:12 2001 -->
REQUEST WAS MADE TO POWER THE SOLENOID. --- STARTED SEQ.
<!-- Author: JIM -->


<!-- Date: Thu Jul 12 22:14:37 2001 -->
SOLENOID IS AT FULL POWER. --- NO PROBLEMS YET!
<!-- Author: JIM -->