[Elecraft] K4D - KPA500 Fault Question + wish

[Bob McGraw]

Based on my experience with my KPA500 and an exchange with Jack, W6FB, I 
have found no need to run the Fan Speed at any value other than NOR as 
defined via the MENU.   {See my comments regarding efficiency.}

I'm aware that "others" have measured and tracked and computed results 
to an extensive numerical value.  OK so be it.  It is your amp.  I just 
choose to run mine in the "quiet" mode of NORMAL {and not suck in a load 
of dust by it running all the time} and allow the control system in the 
amp to apply the fan and fan speed as so dictated by the software.

73

Bob, K4TAX


On 4/24/2022 6:48 PM, elecraft-request at mailman.qth.net wrote:
> Message: 15
> Date: Sun, 24 Apr 2022 15:40:30 -0500
> From: Jack Brindle<jackbrindle at me.com>
> To: email<email at nr3i.org>
> Cc:"elecraft at mailman.qth.net"  <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] K4D - KPA500 Fault Question + wish
> Message-ID:<AEF9B75A-9646-4CD4-909E-7D3E593D2E4C at me.com>
> Content-Type: text/plain;	charset=utf-8
>
> If there was no recent ?HI TEMP? fault in the log, then it was not the KPA500 that caused the display on the K4.
> In that case, ask the K4 folks what may have happened.
>
> I have never seen a HI TEMP fault with my KPA500s in normal operation, although I am sure others have.
> I have seen it when testing?
>
> Again, the FAN CTL is the minimum fan speed. If the fan goes above that speed, it will certainly slow down when
> the PA cools. The amp works just fine at the default value of 0, only turning on the fan when it is needed.
>
> Now, my question for everyone reading - when is it that you feel the need to set the fan speed above 0?
>
> 73,
> Jack, W6FB

-- 
IF ONE EXPECTS COMPUTERS AND TECHNOLOGY TO SOLVE THEIR PROBLEMS,
ONE DOESN'T UNDERSTAND COMPUTERS AND TECHNOLOGY
AND ONE DOESN'T UNDERSTAND THEIR PROBLEMS."