The Contractor shall perform 1 planned preventive maintenance during the contract period. Technically qualified factory-trained personnel shall perform Service. Service shall consist of a thorough cleaning, calibration, adjusting, inspection, and testing of all equipment in accordance with the manufacturer's latest established service procedures. All equipment shall be operationally tested through at least one (1) complete operating cycle at the end of the preventive maintenance inspection to assure optimum and efficient performance. 3.3 REPLACEMENT PARTS The Contractor shall furnish all required replacement parts at no additional cost to the Government, with the exception of consumables. Parts shall be new to original equipment specifications. Parts will be delivered the earliest next day. The following components are included under this service agreement: CSU-X1 Spinning Disk S/N 95V300105 and NIS Elements Software Updates (located at room no. 2033B4, building 37). 3.4 SOFTWARE UPDATES/SERVICE The Contractor shall provide Software Service and updates in accordance with the manufacturer's latest established service procedures, to include telephone access to technical support for use of program software and trouble shooting of the operating systems, at no additional cost to the Government. The contractor shall receive advance approval for the installation of all software updates and revisions from the Government. Defective software shall be replaced at no additional cost to the government. The Contractor shall provide unlimited clinical technical telephone support (24hrs/day, 7 days/week) for trouble-shooting for the instrument and clinical application support (M-F 8am-9pm), excluding Federal holidays.