{Collins} Re: 30S-1 thermal switch K102



I would be a little nervous about using the method below.  To push it to 
find the cutoff is arbitrary and
could put the final at risk.  I did know the temperature cut off at one 
time, but have forgotten the number.  Hopefully
someone can provide that to us.  In the meantime I would put a thermometer 
in the correct area and
run the unit under normal condition and then set the switch higher, how 
high is something you would
have to decide.  I would go for 10 degrees, if I was running it in Fl with 
no AC maybe higher.  Hopefully
you can get better guidance.  I know Dennis Brothers would know.

Kurt Keller




At 10:18 AM 2/10/2005, Roy Morgan wrote:
>At 06:44 PM 2/9/2005, J. A. Call wrote:
> >Hello to the list.  Can anyone tell me the temperature rating of thermal
> >switch/relay K102, in the 30S-1, which causes the switch/relay to open
> >thus removing voltage and  protecting  the final output tube V101?
>
>J,
>
>I can't tell you any numbers, but I do remember a post in the past telling
>about how it was adjusted.  It went something like; operate the amplifier
>at greater than maximum input power continuously.  Set the switch to
>operate in the first five minutes (or some such as that.)
>
>I have had advice from experienced 30L-1 overhaulers to just eliminate the
>thing if it's not working right.  (And then don't be brutal to your 
>amplifier.)
>
>Roy
>
>
>- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
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Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central






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