ACS550-02/U2 User’s Manual 285
Maintenance
Maintenance
Safety
WARNING! Read chapter Safety on page 5 before performing any maintenance on
the equipment. Ignoring the safety instructions can cause injury or death.
Note: There are parts carrying dangerous voltages near the control board when the
drive is powered.
Note: ACS550-U2 Installation Supplement [3AUA0000004067 (English)] provides
more information about the maintenance of ACS550-U2 drives.
Maintenance intervals
If installed in an appropriate environment, the drive requires very little maintenance.
This table lists the routine maintenance intervals recommended by ABB.
Interval Maintenance Instruction
Every year when stored Capacitor reforming See Reforming on page 289.
Every 6 to 12 months
(depending on the dustiness of
the environment)
Heatsink temperature check
and cleaning
See 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 battery
replacement
See Control panel on page 291
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