ABB DCS880 - Page 120

120
Preventive Maintenance
3ADW000488R0101 DCS880 Service manual e a
− Check the door air filters.
− Clocked up filters prevent proper cooling
of the drive. Wash dirty filters with water
(60°C) and detergent.
− Check for dust, corrosion and temperature
inside the module/cabinet. The DCS will
run into overtemperature faults if the
heatsinks are not clean.
− Pre-clean the heatsinks using an ESD
vacuum cleaner then use compressed air
to remove the dust from the heatsinks (the
airflow must be from bottom to top). Fan
rotation caused by the compressed air
must be stopped in order to prevent
damage.
− Use an ESD vacuum cleaner to clean the
dust from the air inlet, air outlet, the
interior of the cabinet and the electronic
boards.
− Any signs of corrosion, especially at
ground components, must be removed.
− Check the quality of the supply voltage (e.g. deviation from nominal voltage value, …).