[Elecraft] KPA500 Fan Control

[Monkeys]

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?

John K7FD