[Elecraft] KPA500 Fan Control

[Don Wilhelm]

John,

It is good to hear that you have had success with a fan setting of 2.
Like most mechanical components, there is a wearout time, but I suspect 
it is in the vicinity of 1000 to 5000 hours.  That is a lot of operating 
time.

If you are concerned about wearout, just turn the KPA off (or standby) 
when not using it.

73,
Don W3FPR

On 11/30/2018 10:30 AM, Monkeys wrote:
> Is there any harm in setting the fan at level 2 and just leaving it
> there? I would think the fan might wear out a little faster, but how
> much faster? The reason I ask is that when the fan control is set to
> NOR I find that the fan eventually...and understandably... kicks into
> a super high speed whine on extended CW ragchews. But I have found by
> setting the fan control to 2, the amp seems to like this 'pro-active'
> cooling. I can ragchew to my heart's content and it never goes into
> that high speed jet-taking-off or vacuum cleaner level. Has anyone
> else changed their fan from NOR to 2 as a default and experienced any
> side effects?