ID |
Date |
Author |
Operational Mode |
Subject |
Text |
|
46
|
Sun Aug 29 14:39:19 2004 |
Doug Preddy | Normal Running | Power lead ripple | The LHe in and PL-neg temps have been building
up a ripple over the last
few days. Curtis cycled HIC142 Friday evening |
|
45
|
Wed Aug 25 12:52:53 2004 |
Doug Preddy | Normal Running | power lead ripple | Lhe ripple has started. 10.9-11.4K PL-Pos
also has a smaller ripple. Both
flows down to 230mm. Cycled HIC 142 and the |
|
44
|
Wed Aug 25 07:47:05 2004 |
Doug Preddy | Normal Running | Power lead flow | The power lead flows had dropped to 210 mm
this morning. I increased HIC142
from 0.8 to 0.83. The flows are back to <250 |
|
43
|
Tue Aug 24 12:09:50 2004 |
Doug Preddy | Normal Running | The past few days | The solenoid has been re-started as of August
19. It was cooled down and
energized over the weekend. Sunday night |
|
42
|
Thu Aug 19 10:28:32 2004 |
Doug Preddy | Start Up | after M9bv5 FIX | Over the last couple of days we replaced the
gate on the M9BV5 valve. The
old one had worn the teflon sliders on the |
|
41
|
Sat Aug 7 23:40:47 2004 |
Willy Andersson | Quench Recovery | Energizing solenoid | 23:39 Powerleads cold, LHe level over 40%
and rising. Energizing solenoid
to 500 Amps, ramp rate 60. Checking compressor |
|
40
|
Sat Aug 7 22:37:04 2004 |
Willy Andersson | Quench Recovery | Compressor tripped off. | Got a call at about 10:00 this morning, the
whole system had tripped off.
No power bumps or other disturbances. When |
|
39
|
Thu Jul 29 13:25:29 2004 |
Doug Preddy | Quench Recovery | start flow to power leads | |
|
38
|
Thu Jul 29 09:01:11 2004 |
Doug Preddy | Quench Recovery | switched to parallel cold | Changed to series mode. |
|
37
|
Wed Jul 28 23:07:01 2004 |
Doug Preddy | Quench Recovery | solenoid cooling | cooling rates for the solenoid are good. In
parallel cold return. |
|
36
|
Wed Jul 28 22:01:31 2004 |
Doug Preddy | Quench Recovery | Starting flow to solenoid | c1 28, c12 29, c6 11.6, c7 12.5 TI121 22.5 |
|
35
|
Wed Jul 28 21:26:19 2004 |
Doug Preddy | Quench Recovery | Double Power bump | Two power bumps tonight. Everything tripped
of. Restarted cooling water
pump, diff. pump under solenoid etc. Computer |
|
34
|
Wed Jul 28 07:00:18 2004 |
Doug Preddy | Quench Recovery | switch to series mode | Switching to series mode. Jumper on vacuum
gauge removed. |
|
33
|
Wed Jul 28 00:04:30 2004 |
Doug Preddy | Quench Recovery | started flow to solenoid | Solenoid temps were: C1 & C12 about 30K. C6
&C7 about 11K. Started flow to
solenoid in parallel cold return. Jumpered |
|
32
|
Tue Jul 27 23:33:27 2004 |
Doug Preddy | Quench Recovery | Solenoid quench 9:30 | I was phoned at about 9:30 tonight with a
solenoid alarm. After looking at
the display I found the system to be tripped |
|
31
|
Tue Jun 29 14:59:46 2004 |
Willy Andersson | Normal Running | Removed jumper on vacuum controller. | Tuesday 14:55
Removed jumper on back of PIC 901. This jumper |
|
30
|
Fri Jun 25 14:20:58 2004 |
Willy Andersson | Quench Recovery | Switch to series mode | At about 14:00 solenoid temps dipping below
8 K. Trace of LHe level (dense
gas) starting to show. Switching to series |
|
29
|
Fri Jun 25 12:36:04 2004 |
Willy Andersson | Quench Recovery | Compressor unloaded etc. | At about 09:30 this morning I noticed the
sound coming from the compressor
building seemed louder than usual. After |
|
28
|
Fri May 21 09:27:39 2004 |
Doug Preddy | Maintenance | Idle mode | Power supply was ramped down yesterday as
there are no users.
The Sundance server was rebooted yesterday. |
|
27
|
Thu May 6 09:32:13 2004 |
Willy Andersson | Quench Recovery | Additional notes from last night power lead problems. | When performing last nights refrigerator adjustments
I also increased the
compressor discharge pressure to 11.25 barA. |
|