Yes.
Strategic Operations, pg87 : "Any attempts to recharge the K-F drive faster than 175
hours may result in drive damage."
Fluff explanations are on pg125, including the following comment on solar sail charging:
"Solar sails at
bright stars, or in positions closer to stars than standard jump
points, can also fry the drive. You’ve got to watch that inverse
square law about sunlight. Example: a habitable planet for
a yellow is about ten times closer to the star than the jump
points. If you deploy your sail there, you can get one hundred
times the power input. That’ll let you charge the drive in about
two hours by sail, but there won’t be much drive left to use, so
it’d be wise to keep the sail power converter output throttled
down in a bright system—you don’t have to let in every joule
from the sail, after all."
