Maintaining the IAC-D6-2 EATON Powerware® 9390 IAC-D Installation and Operation Manual S 164201591 Rev B powerware.com6.2.2 PERIODIC MaintenancePeriodic inspections of the IAC-D should be made to determine if components, wiring, andconnections exhibit evidence of overheating. Particular attention should be given to boltedconnections. Maintenance procedures should specify that the bolted connections beretorqued to values listed on labels posted on the equipment.Refer to the Distribution Panel manufacturer’s circuit breaker application and maintenanceliterature for recommended maintenance practices and procedures.6.2.3 ANNUAL MaintenanceAnnual preventive maintenance, if required, should be performed only by authorizedservice personnel familiar with maintenance and servicing of the UPS system. Contact yourEaton service representative for more information about service offerings.6.3 Short CircuitsShort circuits are not considered normal phenomena in UPS system applications. Trippingof protective devices due to low impedance short circuits should be thoroughlyinvestigated for damage to conductors, insulation, and the protective devices inaccordance with the manufacturer’s recommendations.6.4 Maintenance TrainingA basic training course, available from Eaton, gives you a competent working knowledge ofthe UPS system operation and teaches you how to perform first level correctivemaintenance. For more information about training and other services, contact the EatonHelp Desk for Powerware products (see page 1-6).