 Fri Dec 19 13:59:53 2003, Doug Preddy, Maintenance, To-Do list for M9SOL
|
> I had distributed this list by email earlier this month. I have added
> a few items at the bottom. I am posting it on the M9SOL Elog under
> Maintenance. Some of the items may not be achievable or practical but
|
 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. This morning the displays were
all white screened, so I restarted the session. The computer was running
|
|
Fri Oct 1 11:39:55 2004, Doug Preddy, Maintenance, Loading of compressor not working
|
When the compressor was restarted on Monday, the remote load button would
not respond. The compressor was shut off. After two days of searching the
wiring etc. a bad connection was found on DR1 relay (upstairs in the
|
|
Fri Mar 11 09:18:30 2005, Doug Preddy, Maintenance, services on system
|
The cold box was isolated and pumped out after it warmed up. It has been
refilled with helium.
Turbine 2 speed indicator failed at some time during the last run. After
|
|
Mon Apr 18 09:52:11 2005, Doug Preddy, Maintenance, Relays replaced
|
The following relays have been replaced in the Sulzer control panel:
K341, K379, K132, K324A, K314, K125, K127, K133, K252, K227, K233, K238,
K239, K245, K246.
|
Thu May 19 15:05:31 2005, Doug Preddy, Maintenance, STA 120 replaced 
|
The turbine 2 speed indicator control box STA 120 has been replaced with a
newer style Jaquet controller. This is similar to the ones used in the
ISAC helium liquifier. See attached photos for set up parameters. These
|
|
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 |
|
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. Please contact me at 6399
for the password.
|
|
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 leads to >80k. |
|
Tue Jun 12 12:48:25 2007, Doug Preddy, Maintenance, added one bottle UHP helium to system
|
| |
|
Tue Aug 14 10:15:22 2007, Doug Preddy, Maintenance, Solenoid ramped down
|
| Solenoid ramped down and locked out for M9A slits work. |
|
Wed Sep 12 12:01:02 2007, Doug Preddy, Maintenance, regenerated adsorber
|
regenerated adsorber
replaced MV902 "ON" switch (used nitrogen precooling on switch) |
|
Tue Sep 18 18:48:11 2007, Curtis Ballard, Maintenance, cold box leak check
|
The leak check of the cold box diff pump fittings. Found a leak at the
base of the diff pump on the tee that is apparently used to fill the pump
with oil. The fitting was removed and a plug was removed that resembled a
|
|
Wed Sep 19 20:53:18 2007, Doug Preddy, Maintenance, More diff pump news
|
Cold box pumped out to ~ 190 mTorr overnight.Leak checked the pump again.
Still leaks at dip stick.Tried resetting the o-ring on the dip stick. It
still leaks baddd!!!
|
|
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.
|
|
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. |
|
Fri Nov 9 18:56:20 2007, Doug Preddy, Maintenance, System Ready to Run
|
| M9BMP2 was replaced. Vacuum good. Solenoid is ramped up. :) |
|
Tue Sep 9 15:04:23 2008, Doug Preddy, Maintenance, Jumpered interlock for diff pump water flow
|
| Jumpered interlock for diff pump water flow in Proteus box. |
|
Fri Sep 26 09:44:25 2008, Doug Preddy, Maintenance, Water flow interlock restored
|
| yesterday |
|
Wed Dec 10 15:44:58 2008, Doug Preddy, Maintenance, Repairs to solenoid power supply
|
Klaus and company pulled the ramp rate card out of the solenoid power supply. Operational checks were done and the rate switch was cleaned. The card was
reinserted and the ramp rate was checked. The power supply seems to ramp at a proper rate in all positions. ***Note*** The output voltage of the power
supply is proportional to the ramp rate. The faster the ramp rate the higher the output voltage. |