Back in the days of the 980s when the PDH card was on the fritz
(technical term) the machines would erratically overtemp.

Jeff Mikolai
Creative Computers, Inc.


> -----Original Message-----
> From: Alan Yeo [SMTP:[log in to unmask]]
> Sent: Wednesday, December 10, 1997 8:09 AM
> To:   [log in to unmask]
> Subject:      Re: HIGH OVERTEMP WARNINGS
>
> In article <[log in to unmask]>, Jim Norbut
> <[log in to unmask]> writes
> >Hello,
> >
> >Our system 927LX Series 950 MPE 3.0 (Yeah...so were a little behind
> the times)
> >crashed
> >with multiple HIGH OVERTEMP WARNING messages last friday night at
> 7:00 p.m.
> >
> >Someone had been monkeying around with the air-conditioning vents in
> our
> >computer room.
> >I had to wait 2 1/2 hrs before I could sucessfully reboot the system
> where it
> >could stay
> >on without going down again because of the heat.
> >
> >Has this happened to anyone else recently.......is there a certain
> temp. that
> it
> >has to be
> >below in the computer room.
> >
> >We have a HP-UX machine in the same room and it had no problems....
> >
> >Thanks
>
> Hello
>
> I was slightly bemused by the description of your system, is it a
> 927LX
> or is it a 950, or have I misunderstood and you have two HP3000's and
> they both went overtempature.
>
> Your reference to MPE 3.0 makes me think you have one of the original
> PA
> M/C's which were real gas guzzlers (read heat generators) as were the
> disc drives for it.
>
> Assuming that it is an old 950 and the HP-UX m/c may be of a newer
> generation I think it quite likely that the 3000 went down sooner and
> stayed down longer.
>
> I don't know what the published temperature range was for the 950, but
> for a 928LX the operating temperature range is +5C (41F) to +40C
> (104F),
> whilst it's non operating temperature (ie safe to store but not to
> operate goes up to 65C (i.e. To Hot To Handle). By the way the advised
> temperature rande for tape media is only up to 45C above which it is
> likely to degrade. So if your computer room got any hotter than this
> and
> you keep any tapes in it, don't rely on them anymore.
>
> Personally if you have an old 950 and discs, I'm sure someone can do
> you
> a cost analysis that would prove that swopping it for a 928 would have
> a
> very early payback, in saved electricity costs, maintenance costs, as
> well as being an awfull lot faster.
>
> Anyway to sum up, I think somewhere under 40C (104f) is the
> temperature
> that your 950 will go belly up.
>
>
> --
> Alan Yeo
> [log in to unmask]    Just because you're paranoid
>                         it doesn't mean someone isn't reading your
> mail.