Running The Machine The First Time; Supervision During The First Run; Checks During Running Of The Machine; Bearings - ABB AMA Series Manual

5.7 Running the machine the first time

5.7.1 Supervision during the first run

5.7.2 Checks during running of the machine

5.7.3 Bearings

3BFP 000 050 R0101 REV E
of eventual noticeable air leaks from the machine enclosure, the leaking joints shall be properly
sealed.
The purging and pressurizing system must be included in the starting interlocking system.
Connect the alarm and status switch signals of the unit to the main circuit breaker control
system. This ensures that it is not possible to start the machine before the purge is complete and
the machine enclosure is pressurized.
After a successful first test start, the coupling between the driving and driven machine should be
coupled, and the machine can be restarted.
During running the machine the first time, it is verified that the machine functions as expected.
The vibration level, the temperature of the windings and bearings, and other equipment are
monitored frequently. If the machine functions as expected, the machine can be left running for
a longer time.
Check the operating load of the machine by comparing the load current with the value given on
the rating plate of the machine.
Record the temperature readings given by the temperature detectors placed in the windings and
possibly in the bearings. Check the temperatures frequently to ensure that they remain below the
limits. Continuous temperature monitoring is recommended.
NOTE: If resistance temperature detector (RTD, Pt-100) or equivalent is not available, the
surface temperature of the bearing area shall, if possible, be measured. The bearing
temperature is approximately 10°C (20°F) higher than the surface temperature.
In case of any deviations from expected normal operation, e.g. elevated temperatures, noise or
vibration, shut down the machine, and find the reason for the deviations. If necessary, consult
the manufacturer of the machine.
NOTE: Do not disengage any protective devices during running of the machine, or during
search for a reason for unexpected function of the machine.
During the first days of running, it is important to keep a close surveillance of the machine in
case of any changes in vibration or temperature levels or abnormal sounds should occur.
The rotating electrical machines manufactured by ABB are equipped with either rolling or
sleeve bearings.
Manual for Induction Motors and Generators
Commissioning and Start-up - 49