[Elecraft] KPA500 Fan Question

[Jay]

Just did the first voltage test on #153.  Basically I turned it on to 
check that the tap is the right one, then turned it off.  The fan ran 
for over 15 min before I turned it on again (which shuts the fan 
down).... How long should it go before shutting down?  Repeated the 
procedure and tapped "temp" and it showed 23.5 C and the fan does not 
run while in "Standby", but it comes on again when I tap the power 
button.  Still running as I type.  Is this adjustable?  Jay, W6JDB