Heatsinks; Cleaning The Heatsink; Capacitors; Reforming The Electrolytic Capacitors - ABB ACS800 Hardware Manual

Heatsinks

The heatsink fins of the power modules pick up dust from the cooling air. The
module runs into overtemperature warnings and faults if the heatsinks are not clean.
In a "normal" environment (not especially dusty nor clean) the heatsinks should be
checked annually, in a dusty environment more often.

Cleaning the heatsink

WARNING! Read and follow the instructions in chapter
the instructions can cause physical injury or death, or damage to the equipment.
1. Switch off the power to the unit and open the main disconnecting device. Close
2. Let the intermediate circuit DC capacitors discharge for five minutes. Ensure by
3.
4. Blow dry clean compressed air from bottom to top and simultaneously use a
5. Refit the cooling fan.

Capacitors

The inverter modules employ several electrolytic capacitors. Their lifespan is at least
90 000 hours depending on the operating time of the drive, loading and ambient
temperature. The life of a capacitor can be prolonged by lowering the ambient
temperature.
It is not possible to predict a capacitor failure. A capacitor failure is usually followed
by damage to the unit and an input cable fuse failure, or a fault trip. Contact ABB if a
capacitor failure is suspected.

Reforming the electrolytic capacitors

Reform (re-age) spare part capacitors once a year according to Capacitor reforming
guide (code: 64059629 [English], available through your local ABB representative.

Capacitor replacement

Contact an ABB service representative.
the grounding switch (option +F259) if there is one.
measuring that the drive is not live before starting the work.
Remove the cooling fan (see section
vacuum cleaner at the air outlet to trap the dust.
Note: Prevent the dust from entering adjoining equipment.
Safety
Cooling fans).
121
instructions. Ignoring
Maintenance