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Note 1:
Cooling liquid to be used is BASF Glysantin® G30® or Valvoline Zerex G30® mixed
with tap water. For more details, see chapter
. In case practical examples
or specific tests carried with the above mentioned cooling mixture together with the cooling
system materials, the maintenance interval can be revised.
Note 2:
The maintenance schedule of the main circuit breaker is according to maximum
1,000 operations of the breaker per each year. Replacement after 10000 operations. For
more information, refer to the maintenance manual of the ABB SACE breaker.
Maintenance timers and counters
The control program has maintenance timers and counters that can be configured to generate
a warning when a pre-defined limit is reached. Each timer/counter can be set to monitor
any parameter. This feature is especially useful as a service reminder. For more information,
see the firmware manual.
Power connections
■
Tightening
WARNING!
Only qualified electricians are allowed to do this work. Read the complete safety
instructions of the converter. If you ignore the instructions, physical injury, death,
or damage to the equipment can occur.
1. Disconnect the converter from the all power sources (including UPS) and make sure it
is safe to start the work. See the safety instructions.
2. Check the tightness of the cable connections. Use the tightening torques given in the
technical data.
Fans
The lifespan of the cooling fans of the converter depend on the running time of the fan,
ambient temperature and dust concentration. See the firmware manual for the parameter
or actual value which indicates the running time of the cooling fan of the converter modules.
For resetting the running time after a fan replacement, contact ABB.
Replacement fans are available from ABB. Do not use other than ABB specified spare parts.
All the fans in the converter are of the same type.
Maintenance 73
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