Xerox WC 5335 - Fax Keeps Reprinting

Hello,

I have a Xerox WorkCentre 5335 which is set up as a fax machine as well.  Every so often, another Xerox WC 5030 at our other location keeps reprinting a fax that was sent out last week.

Is there a way to clear up the memory on the Xerox WorkCentre 5335 so that it doesn't resend the fax anymore?

Thank you.