If a conservator fails to make a partial settlement as often as such settlement is required of him or her, the court must issue process to him or her, requiring him or her to make such settlement, and all the costs thereof and of the process must be taxed against him or her personally and must not be charged against the ward or his or her estate, unless he or she appears in answer to the process and shows a satisfactory excuse for his or her failure and files his or her accounts and vouchers for such settlement.