[RASMB] shut down problems with old XLA

[John Correia]

What is a 66 error?  Do you own a Optima XLA manual - beckman sells
them?

In my book d66 is a Drive voltage out of range - @ speed implied - it
is decribed as  Drive Malfunction Shutdown with break - but my service
repair guy has written:  "May be vacumn related" in the margin?  my rguy
says its the drive or the inverter?  but you replaced the drive & I
presume the inverter?  

Keep us informed & I hope its not a worm we can catch by thinking about
it!



>>> "John Burgner" <jwb at bilbo.bio.purdue.edu> 10/10/03 02:19PM >>>
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T0: The Marvelous RASMB Knowledge Base.
Help
We have an old XLA (probably >10yrs old) that has developed a
frustrating
problem over the past year or so. The XLA will spontaneously shut and
print
out a 66 error. I am begining to think that it is really a 666 error,
since
we can never get it to fail when the Beckman service technecians are
here.
The error usually occurs just after I increase the speed from 30k to
42k rpm
during a small molecule  equilibrium run. It also happened two days
ago
during a velocity run at 40k rpm and 4C, which is the first time that I
have
run a velocity experiment on this machine in the past year. Beckman
has
replaced both of the boards that control the motor and just recently
the
motor itself. The only thing that I can see that I typically am doing
different than Beckman is that I usually have 3 cells and the
counterbalence
in the rotor.
Anyone have any additional ideas?  Note that we also run a XLI right
next to
the XLA off nearly the same electrical bus without problems.
Any ideas?
John
John W. Burgner
Department of Biological Sciences
Purdue University
915 West State St
West Lafayette, IN 47907-2054
765-494-4960
765-496-1189 (fax)

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