90 Maintenance
Power connections
Tightening
WARNING! Read and follow the instructions on the first pages of this manual.
Ignoring the instructions can cause physical injury or death, or damage to the
equipment.
1. Ensure that the converter is disconnected from the power supply network and all other
precautions described in section Safety in installation and maintenance, page 12 have
been taken into consideration.
2. Check the tightness of the cable connections. Use the tightening torques given in
chapter Technical data.
Cleaning and greasing
WARNING! The modules are heavy and have a high centre of gravity. They
topple over easily if handled carelessly.
1. Open the cabinet doors.
2. Use the tightening torques given in chapter Technical data.
3. Clean all contact surfaces of the quick connector and apply a layer of suitable joint
compound (eg, Isoflex
®
Topas NB 52 from Klüber Lubrication) onto them.
4. Repeat steps 1 to 3 for all remaining modules.
Fans
The cooling fan lifespan depends on the running time of the fan, ambient temperature and
dust concentration. Each power module has own cooling fan. Replacements are available
from ABB. Do not use other than ABB specified spare parts.
Replacing the cooling fan of the converter module
WARNING! Read and follow the instructions on the first pages of this manual.
Ignoring the instructions can cause physical injury or death, or damage to the
equipment.
Every 6 years APBU branching unit memory
backup battery renewal (only
with parallel connected
modules)
See PPCS branching unit (APBU-xx).
Every 6 years Coolant change Change the coolant according to
instructions. See also chapter The internal
cooling circuit.
Every 9 years Capacitor renewal See Capacitors.
Interval Maintenance action Instruction
To Next Page
Loading...
