[Elecraft] KPA-1500 PSU mounting position

[RIchard Williams]

Hopefully Eric or Wayne will chime in and answer this question once and for all.  Since warm air has a tendency to rise,  I could see where placement could be an issue. 
An answer "straight from the horse's mouth" would hopefully put this issue to bed.
Dick, K8ZTT

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  On Mon, Aug 20, 2018 at 21:30, Bill Stravinsky via Elecraft<elecraft at mailman.qth.net> wrote:    Interesting.  I just told my friend W2irt that it was OK for vertical mounting of the power supply from the several posts on here a few months ago and I thought onewas from Elecraft.  Its hard to imagine vertical placement of the power supply being a problem.  It never even approaches getting warm unlike the rf deck.
BillK3WJV

    On Monday, August 20, 2018, 12:24:55 PM EDT, Bob via Elecraft <elecraft at mailman.qth.net> wrote:  
 
 Well maybe this requires a reply from Elecraft.  They seem to be furnishing 
conflicting information on this. I asked that question and here is the reply I 
received:



Elecraft:  Placement of the power supply can be anywhere within the 5.5 ft 
distance of the power supply cable and control cables, both of which are 5.5 ft. 
  Air passing through the power supply is from left to right in a horizontal 
manner.  This means that it will not work properly standing on its side.


Seems logical that setting it on the side would restrict the air flow severely. 
I'd have liked to place mine vertically on its side but did not based on this. 
Mine sits  under the desk on a riser so I did not lose foot space.  I did not 
require easy access to the switch as I totally kill the equipment circuits in 
the shack at shutdown.

73,
Bob
K2TK  ex KN2TKR (1956) & K2TKR

On 8/20/2018 9:33 AM, Dauer, Edward wrote:
> Before mine arrived a few weeks ago I put exactly that question to Elecraft Support.  The reply was that there would be no problem mounting the PS vertically, so long as the air clearances are observed for the air flow -- I believe it's three inches at the top and at the rear, but the manual is pretty clear on that.  I've mounted mine that way.  When sitting on its side the On-Off switch is conveniently near the top-rear edge.  Works FB.
> 
> Ted, KN1CBR
> 
> 
>      ------------------------------
>      
>      Message: 21
>      Date: Mon, 20 Aug 2018 00:09:09 -0400
>      From: "Peter Dougherty" <Peter at w2irt.net>
>      To: <Elecraft at mailman.qth.net>
>      Subject: [Elecraft] KPA-1500 PSU mounting position
>      Message-ID: <004401d4383b$8c21ac70$a4650550$@net>
>          
>      Hi All,
>      My KPA-1500 arrived over the weekend and I've not gotten a chance yet to set it
>      up. In looking at both the amp and the power supply I noticed both have carrying
>      handles and rubber feet. Are these rubber feet just there for transporting the
>      untis, or can the power supply actually be run vertically with equal efficiency
>      and cooling as it would be horizontally? If so, that would fit my operating desk
>      perfectly.
>      
>      ----------------------------------------------------
>      
>      Thanks in advance.
>      Regards,
>      Peter W2IRT

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