> 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
> I thought it would be a useful first attempt at a To-Do list.

A couple of other things to add:
Rebuild cooling water circulation pump with new seals and bearings.
Add air bleeds to the copper nonactive water lines.
Doug

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 
very slow and I could not get the strip tool to run at all. I rebooted the 
local PC and everything seems to be okay now.
While rebooting the computer had an error message that the hard drive may 
have some bad sectors. Did a scan disk and it seems okay, but the hard 
drive might be dying in the local machine.

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 
compressor control panel). The wire was the "compressor on" sensor. 
Connection was cleaned and retightened.
The compressor was started this morning and is working. 
I pressurized the cold box and started flow to the solenoid and through the 
power leads. I started a continuous flow throughthe LN2 adsorber. This will 
be run over the weekend. Cooling to start Monday morning.

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 
the turbine inlet vavle was closed the turbine continued to read full 
speed. I am removing the controller to look at it. The main power has been 
turned of for this procedure.

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.
These were the one that had indications of sever rusting inside the case.
There are five more spare relays in the gray cupboard.

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 
were taken from the old controller, Sulzer documentation, and the ISAC 2 
controllers.

I have installed a new control computer at the M9 solenoid control panel

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.
Doug

Power lead temps have been slowly increasing over the last wekk. I ramped 
the solenoid down and am warming the power leads to >80k.

Solenoid ramped down and locked out for M9A slits work.

regenerated adsorber
replaced MV902 "ON" switch (used nitrogen precooling on switch)

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 
dip stick (approx 1" long).  Tbe dip stick was charred black as if it had 
been hot.  The seal between the dip stick and the tee was not an O-ring.  
It looked like a high temperature glue?  For leak checking purposes, an O-
ring was fitted to the dip stick and reinserted in situ.  Only the top 
portion of the tee was removed.  The lower cap was slathered in vacuum 
grease. Pumping back down was slow.  After two hours the vacuum was down 
to 2 torr.  At 6:30 pm, the vacuum was 200 mtorr, so I turned on the 
filament and tried again to leak check.  I was able to get the throttle 
valve open a little wider than previously, but we still had a big leak.  I 
checked at the tee and got a strong response, but I also checked at the 
diff pump connections and also got a response, albeit much less.  We may 
have to blank off the entire diff pump to isolate the cold box so that we 
can leak check the system.  Dimo said he will be able to help tomorrow.  
For now, I will leave the roughing pump on the cold box and isolte the 
leak detector.  See you tomorrow.  
P.S. I left a voice mail re: welding at TITAN 8:30 am/blankets/work 
permits/extractor.   cb

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!!!
Machined the old seal off and installed a smaller o-ring onto dip stick. 
Installed 60 ml of new pump oil into pump. Pumping down again. 
After 4 hours the cold box is down to 160 mTorr.

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.

thumb wheel panel all lite up. 2APLC rebooted by Klara (Thanks). M9BMP2 not 
pumping properly. Edi is looking at it. 

M9BMP2 was replaced. Vacuum good. Solenoid is ramped up. :)