[Elecraft] KPA1500 S/N 160 delivered today

[Bill Stravinsky]

 I can only give you a half a "duh".  The preliminary manual supplied with the amp only gives you the menu description of fan speed and it doesn't really describe the operation.The paragraph in the online manual labelled "Amplifier Cooling" is NOT in that preliminary manual.  The half a duh is for the first line of the menu description of "fan speed min".It says the speed varies per temp but after that sentence there is not much of a description.  It then says greater than zero all the way up to all fans running, leaving you in the dark.  It doesn't explain it like you or Roy explained it.
I really figured it would work like you explained but unless you read the online manual you are missing the amplifier cooling paragraph.  Thanks to you and Roy for clearing thisup for me.
BillK3WJV



    On Friday, May 18, 2018, 7:59:34 PM EDT, Bob McGraw K4TAX <rmcgraw at blomand.net> wrote:  
 
 Bill:

Per the manual if Fan Speed is set to 0 which is the default, the fans 
are not on until needed.  The values of 1, 2, 3 etc will cause the fans 
to run at the selected minimum speed all of the time, but the fans will 
increment to a higher speed as called for by the internal heat sink 
temperature.    If you use 0 the fans will be off until needed.   This 
is not related to the fans in the power supply.

73

Bob, K4TAX



On 5/18/2018 2:41 PM, Bill Stravinsky via Elecraft wrote:
> After having played with mine extensively last night, I was under the impression that the fans would come on automatically when the temp reached a certain degree.That is not the case.  Mine was defaulted at fan speed zero, which is fans off.  You have to change the menu item for fans to one of your liking.  I had read a few postshere on the reflector about 2 being an acceptable number.  I agree.
> If you crank it up to max (5) you might scare the dog, be careful, hi.
> BillK3WJV