This service consists of two scheduled Semi-Annual Preventive Maintenance visits whereby a Schneider Electric Field Services Representative performs a comprehensive inspection of the chiller to maximize critical load uptime by verifying that the components are performing to defined factory specifications. The service personnel inspects environmental conditions, performs maintenance tasks and checks system operating conditions. The Semi-Annual Preventive Maintenance is performed during normal business hours. This service schedule may be upgraded to 7x24, which allows scheduling outside normal business hours, including weekends and holidays. The Semi-Annual Preventive Maintenance schedule is the minimum service interval offered for Advantage Prime Plan. Additional service upgrades to the Semi-Annual Preventive Maintenance schedule are available on quarterly and monthly basis for increased unit protection and uptime.