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ID Date Author Operational Mode Subject Text   175   Thu Oct 26 14:14:57 2006 Doug Preddy Quench Recovery power lead quench solenoid tripped on power lead temp. I was here and caught it. System  cooling.      176   Tue Oct 31 03:52:29 2006 Doug Preddy Quench Recovery power lead quench at 2:30 this morning Compressor still on. Starting flow to solenoid      177   Tue Oct 31 05:36:14 2006 Doug Preddy Quench Recovery switch to series mode        178   Tue Oct 31 08:37:34 2006 Doug Preddy Quench Recovery Energizing solenoid        179   Fri Nov 3 12:09:51 2006 Doug Preddy Normal Running Fine tuning The power lead temperatures have been climbing at a rate of ~ 0.02K very 8  hours. The negative lead started to show      180   Tue Nov 7 10:35:32 2006 Doug Preddy Normal Running Maintenance day I ramped down the solenoid power suplly and shut off flow to the power  leads. I will allow them to warm up and (hopefully)      181   Wed Nov 15 11:09:28 2006 Doug Preddy Quench Recovery Compressor tripped off Compressor tripped this morning at ~8:45. I restarted the compressor, but  turbine 1 would not spin up. I let it warm      182   Wed Nov 15 13:56:00 2006 Doug Preddy Quench Recovery switch to series mode        184   Tue Nov 28 10:32:04 2006 Doug Preddy Quench Recovery recovering after looong power outage The power has been out for about 24 hours. Recovering coldbox, solenoid and  beamline vacuum.PLC is down for the vacuum      185   Fri Jan 26 15:10:37 2007 Doug Preddy Maintenance new control computer installed I have installed a new control computer at the M9 solenoid control panel      186   Mon Mar 5 14:59:41 2007 Doug Preddy Maintenance Password On the weekend someone used this log to send spam messages. I have  installed a password for the write privilege.      187   Thu Apr 19 15:18:25 2007 Doug Preddy Start Up preparing to start the refrigerator Starting the vacuum systems in the coldbox and solenoid.      188   Fri Apr 20 12:15:12 2007 Doug Preddy Start Up remote PLC switch I could not control the vacuum devices using EPICS. The buttons could be  pushed, but nothing would respond. The PLC      189   Mon Apr 23 16:31:02 2007 Doug Preddy Start Up Started compressor Startewd compressor and purifer today.      190   Tue Apr 24 10:21:49 2007 Doug Preddy Start Up Started flow to turbines Started flow to turbines at about 10:00 in parallel warm mode.      191   Fri Apr 27 10:10:07 2007 Doug Preddy Normal Running Solenoid Cold Solenoid cold, power leads cold. Alarm handler started.      193   Fri Apr 27 10:32:07 2007 Doug Preddy Quench Recovery Reset quench relay logic box The quench relay logic controller was not functioning correctly. It showed  a "Trip" light and no other lights. I cycled      194   Mon Apr 30 09:30:26 2007 Doug Preddy Normal Running problems over weekend The PLC Limit switch power supply was tripped off on Saturday. I came in  and reset it and restarted all the vacuum      195   Wed May 2 16:28:16 2007 Doug Preddy Normal Running Energizing solenoid to 500 amps Power supply initially would not ramp up. I exercised the rate control  selector switch and found that the power      196   Wed May 16 10:02:35 2007 Doug Preddy Maintenance warming up power leads Power lead temps have been slowly increasing over the last wekk. I ramped  the solenoid down and am warming the power

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