ACS550-02/U2 User’s Manual 285MaintenanceMaintenanceSafetyWARNING! Read chapter Safety on page 5 before performing any maintenance onthe equipment. Ignoring the safety instructions can cause injury or death.Note: There are parts carrying dangerous voltages near the control board when thedrive is powered.Note: ACS550-U2 Installation Supplement [3AUA0000004067 (English)] providesmore information about the maintenance of ACS550-U2 drives.Maintenance intervalsIf installed in an appropriate environment, the drive requires very little maintenance.This table lists the routine maintenance intervals recommended by ABB.Interval Maintenance InstructionEvery year when stored Capacitor reforming See Reforming on page 289.Every 6 to 12 months(depending on the dustiness ofthe environment)Heatsink temperature checkand cleaningSee Heatsink on page 286.Every 6 years Cooling fan replacement See Fan on page 286.Every 9 to 10 years Capacitor replacement See Capacitors on page 289.Every 10 years Assistant Control Panel batteryreplacementSee Control panel on page 291Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
