Years from start-upComponent …121110987654321Cooling fansRR8iLC 230 VACRRR8iLC 115 VACCoolantRRCoolant draining and refillBatteriesRControl panel batteryRRControl unit batteryConnections and environmentPPPPPPPPPPPPPQuality of supply voltageSpare partsIIIIIIIIIIIIISpare part stockPPPPPPPPPPPPPReforming DC circuit capacitors(spare modules and spare capa-citors)Other useful tasksIIIIIIIIIIIIITightness of terminalsIIIIIIIIIIIIIDustiness, corrosion and temper-atureIIIIIIIIIIIIICooling liquid pipe connectionsPPPPPPPPPPPPPCoolant antifreeze concentrationPPPPPPInspection of coolant qualitySymbolsInspection (visual inspection and maintenance action if needed)IPerformance of on/off-site work (commissioning, tests, measurements or other work)PReplacementRMaintenance and component replacement intervals are based on the assumption that theequipment is operated within the specified ratings and ambient conditions. ABB recommendsannual drive inspections to ensure the highest reliability and optimum performance.Note:Long term operation near the specified maximum ratings or ambient conditions may requireshorter maintenance intervals for certain components. Consult your local ABB Servicerepresentative for additional maintenance recommendations.Maintenance timers and countersThe control program has maintenance timers and counters that can be configured to generatea warning when a pre-defined limit is reached. Each timer/counter can be set to monitorany parameter. This feature is especially useful as a service reminder. For more information,see the firmware manual.82 Maintenance
