ABB ACS380 Series, Руководство по оборудованию

Страница: 81 / 186

Maintenance 81
Cleaning the heat sink
The fins of the drive heat sink become dusty from the cooling air. If the heat sink is not
clean, this can cause the drive to give overtemperature warnings and faults.
WARNING! Obey the instructions in Safety instructions on page 13 . Ignoring
the instructions can cause physical injury or death, or damage to the
equipment.
WARNING! Use a vacuum cleaner with an antistatic hose and nozzle. A
normal vacuum cleaner can cause static discharges which can cause damage
to circuit boards.
To clean the heat sink:
1. Stop the drive and disconnect it from the input power.
2. Wait for 5 minutes and measure to make sure that there is no voltage. Refer to
Precautions before electrical work on page 15 .
3. Remove the cooling fan. Refer to Replacing the cooling fans on page 82 .
4. Blow clean, dry and oil free compressed air from the bottom of the heat sink to the
top and use a vacuum cleaner at the air outlet to trap the dust.
If there is a risk that dust can go into other equipment, clean the heat sink in
another room.
5. Install the cooling fan.