It is a little deeper than that.
Centre tank pump switches must NOT be on unless 1000 LBS (453KGS) of fuel in centre tank, except for defuelling or transferring.
Any time the pumps are on, someone must be in the cockpit monitoring them, and they must be turned off as soon as the low pressure lights illuminate.
------------------
"I USED to be a PPRuNaholic, but now I'm CURED"