Routine Checklist 2 pages PDF Format To keep your cooling tower in peak operating condition, BAC recommends following this maintenance checklist. This will ensure that any maintenance required is routine and not an emergency. If you print this checklist you will also get suggestions for the winterization and spring start-up of your equipment. If you are unsure of the condition of your tower, your BAC sales representative is available to perform a free inspection of your equipment which is a thorough examination and evaluation of the condition of your equipment.