[evlatests] Antenna 24

[Jim Jackson]

Isn't it possible for observations to take the antenna over the 
top?  I seem to remember Ken or Rick running some test observations 
some time back that did this. Can it happen in normal observing?

If the vacuum pumps can start automatically and the antenna can go 
over the top automatically, we have a problem.

Jim

At 03:46 PM 2/12/2008, Rudy Latasa wrote:
>Cryo found a problem on antenna 24 today which was created by 
>someone taking the antenna over the top while one of our vacuum 
>pumps was running. Taking the antenna over the top while the vacuum 
>pump is running will cause the pump to blow oil out the exhaust and 
>all over the vertex room and on top of the racks.
>If anyone has a need to take the antenna over the top, please check 
>to see if either of the vacuum pumps are running, either by a visual 
>check of the pumps or by checking the rcvr screens and looking at 
>the VP voltages. The pump voltage when the pump is off should be 
>around 9.9 volts, if the VP is below 9 volts then it is not safe to 
>run the antenna over the top. If it's critical to take the antenna 
>over the top contact cryo and we will turn the pumps off. Thanks Rudy