ACQ550-U1 User’s Manual 261
Maintenance
Maintenance
WARNING! Read chapter Safety on page 5 before performing any maintenance on
the equipment. Ignoring the safety instructions can cause injury or death.
Maintenance intervals
If installed in an appropriate environment, the drive requires very little maintenance.
This table lists the routine maintenance intervals recommended by ABB.
Consult your local ABB Service representative for more details on the maintenance.
On the Internet, go to www.abb.com/drive
and select Drive Services – Maintenance
and Field Services.
Heatsink
The heatsink fins accumulate dust from the cooling air. Since a dusty heatsink is less
efficient at cooling the drive, overtemperature faults become more likely. In a
“normal” environment (not dusty, not clean) check the heatsink annually, in a dusty
environment check more often.
Clean the heatsink as follows (when necessary):
1. Remove power from the drive.
2. Remove the cooling fan (see section Main fan replacement on page 262).
3. Blow clean compressed air (not humid) from bottom to top and simultaneously use a
vacuum cleaner at the air outlet to trap the dust.
Note: If there is a risk of the dust entering adjoining equipment, perform the cleaning
in another room.
Maintenance Interval Instruction
Heatsink temperature check
and cleaning
Depends on the dustiness of the
environment (every 6…12
months)
See Heatsink on page 261.
Main cooling fan replacement Every six years See Main fan replacement on
page 262.
Internal enclosure cooling fan
replacement
(IP54 / UL type 12 drives)
Every three years. See Internal enclosure fan
replacement on 264.
Capacitor reforming Every year when stored See Reforming on page 265.
Capacitor replacement
(frame sizes R5 and R6)
Every nine years See Replacement on page 265.
Replace battery in the ACQ
Control Panel
Every ten years See Battery on page 265.
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