| ID |
Date |
Author |
Operational Mode |
Subject |
|
246
|
Wed Apr 16 16:51:16 2008 |
Doug Preddy | Start Up | switched to parallel cold return |
|
|
245
|
Wed Apr 16 15:15:44 2008 |
Doug Preddy | Start Up | refrigerator started |
| Turned on compressor last Tuesday. Ran purifier until today. Final value 0.15ppm.
Started cool down yesterday. Switched into parallel cold return this morning, but PIC 229 would not allow the compressor to charge. The compressor tripped due to bad solenoid vacuum (solenoid was warming up). The controller now seems to be working okay.
Restarted in parallel warm mode at ~12:00 |
|
244
|
Wed Apr 16 15:12:01 2008 |
Doug Preddy | Normal Running | graphs to load |
| There are three strip tools saved:
coils
powerlead
startup |
|
243
|
Tue Apr 1 15:17:06 2008 |
Doug Preddy | Start Up | Starting up vacuum systems |
| Monday afternoon there was no control of the vacuum system. The controls were working, but no output to devices. The "output" breaker in the PLC box was found to be tripped. Reseting it allowed control to the vacuum systems.
I started the regeneration of BCP2 this morning, but hte output breaker tripped again. reset it and continued to pump.
Started to pump out the solenoid also. Removed jumper on the BDP2 temperature read-back, bypassed BV2, and BCG2. This allows pumping through the diffussion pump.
Cold box has been pumping for a few weeks. It's at 2.0 x 10-3 |
|
242
|
Mon Dec 3 14:59:58 2007 |
Doug Preddy | Quench Recovery | Not really a quench recovery, But... |
Not really a quench recovery, but...I wanted to send this out via e-mail.
The contactor for the compressor building fan failed recently. Randy is
looking after it, but parts will have to be ordered. The big door should
stay open until the fan is running again.
Other than the fan, the rest of the system weathered the weather okay.
It's up and running until Wednesday morning. After maintenance day, we
should ramp down the solenoid power supply and leave the refrigerator
running. We can do some training and maintenance at this time. I would
also like to keep it cold until blocks can be removed so we can pump out
the cold box. |
|
241
|
Wed Nov 28 15:07:08 2007 |
Kevin Trithardt | Other | power lead regeneration |
Power leads cold again, power supply ramping up. |
|
240
|
Tue Nov 27 21:02:08 2007 |
Doug Preddy | Normal Running | power lead ripples |
power leads were oscillating tonight. John K. came down and cycled CV142.
(Thanks John!) Temps settling out. |
|
239
|
Mon Nov 26 09:45:43 2007 |
Doug Preddy | Normal Running | power lead problems |
Power lead temperatures were rippling yesterday afternoon. I asked one of
the operators to cycle CV142.
The temperatures were rippling again this morning, so I cycled CV142. |
|
238
|
Fri Nov 23 08:41:45 2007 |
Doug Preddy | Normal Running | screen grab of powerlead temps |
|
|
237
|
Fri Nov 23 08:35:37 2007 |
Doug Preddy | Normal Running | power lead problems |
About 10 hours ago the power lead temperatures started to fluctuate and
climb.
I cycled CV142 and the Temps have dropped and stablized. |
|
236
|
Mon Nov 19 04:30:47 2007 |
Doug Preddy | Quench Recovery | switched to series mode |
|
|
235
|
Mon Nov 19 02:58:44 2007 |
Doug Preddy | Quench Recovery | Solenoid quenched on power lead over temperature |
I received a page at 1:30 this morning. The power lead temperatures were
climbing. Cycling CV142 did not fix the problem. The solenoid quenched at
1:50.
Restarted flow at 2:45 in parallel cold return. |
|
234
|
Fri Nov 9 18:56:20 2007 |
Doug Preddy | Maintenance | System Ready to Run |
M9BMP2 was replaced. Vacuum good. Solenoid is ramped up. :) |
|
233
|
Fri Nov 9 16:24:33 2007 |
Doug Preddy | Maintenance | 2APLC Died |
thumb wheel panel all lite up. 2APLC rebooted by Klara (Thanks). M9BMP2 not
pumping properly. Edi is looking at it. |
|
232
|
Fri Nov 9 14:50:03 2007 |
Doug Preddy | Quench Recovery | Solenoid cold |
Solenoid cold. Added two bottles of helium. Allowing to stablize. Will
ramp power supply in half an hour. |
|
231
|
Fri Nov 9 07:37:44 2007 |
Doug Preddy | Quench Recovery | switched to series mode |
switched to series mode. |
|
230
|
Thu Nov 8 09:28:53 2007 |
Doug Preddy | Quench Recovery | started compressor |
And started flow to coldbox,solenoid in parallel warm return.
Tuesday evening theree was a 2 hour power outage 19:00- 21:00. No call
made to M9 operator.
Wednesday tried to recover vacuum. Started cool down Thursday morning. |
|
229
|
Wed Oct 24 12:04:06 2007 |
Doug Preddy | Maintenance | power lead and cryopump regeneration |
Regenerating M9B:CP2 as temperature was up to almost 20k.
Shut off flow to power leads to allow them to warm up. The positive and
negative temps were beginning to creep up.
Regeneraing the adsorber. |
|
228
|
Tue Oct 9 13:16:44 2007 |
Doug Preddy | Quench Recovery | switched to series mode |
|
|
227
|
Tue Oct 9 12:58:22 2007 |
Doug Preddy | Quench Recovery | Solenoid Quench 2 |
Refrigeration sytem shut off at ~ 12:30 today. No apparent reason. Only
light on was a cold box fault.
Restarted in parallel cold return mode. |