Heat Exchanger; Slip Ring Unit; Follow-Up; Shut Down - ABB AMA Series Manual

***Following chapter for cooling type: Air-to-air, and air-to-water

6.4.4 Heat exchanger

***Following chapter for rotor type: Slip rings

6.4.5 Slip ring unit

6.5 Follow-up

6.6 Shut down

***Following paragraph for cooling method: Air-to-water, and water jacket
3BFP 000 050 R0101 REV E
Check that the connections are tight and there is no leakage in the system. Verify that the
cooling fluid, where applicable, and air is circulating without any obstruction.
Follow the wear of the carbon brushes and change them before the wear limit is reached. Verify
that the brushes are not sparking.
Ensure that the slip ring surfaces are smooth. If not, the slip rings must be smoothed on a lathe.
Under ideal conditions, an even layer of brown patina will form on the slip rings during the first
few hours of operation.
Check the tightness of the slip ring housing. Water, grease, oil, or dust should not be permitted
to enter the housing.
The follow-up of operation includes logging of operating data such as load, temperatures and
vibrations. This data is useful basis for maintenance and service.
When the machine is not in operation, anti-condensation heaters have to be switched on where
applicable. This is to avoid condensation effect inside the machine.
For machines with water-cooling, the cooling water supply must be switched off in order to
avoid condensation inside the machine.
NOTE: Voltage may be connected to the terminal box for heating element.
Manual for Induction Motors and Generators
Operation - 55