Re-Greasing - ABB AMA Series Manual

7.5.3.4 Re-greasing

3BFP 000 050 R0101 REV E
All rolling bearings of rotating electrical machines need to be re-greased, see Chapter 7.5.3.3
Re-greasing intervals. The re-greasing can be performed either manually or by means of an
automatic system. In either case, it has to be verified that a suitable amount of the correct grease
is entering the bearing at suitable intervals.
NOTE: Grease can cause skin irritation and eye inflammation. Follow all safety precautions
specified by the grease manufacturer.
Manual re-greasing of the bearings
Machines suited for manual re-greasing are equipped with grease nipples. In order to prevent
debris from entering the bearings, the grease nipples, as well as the surrounding area has to be
cleaned thoroughly before re-greasing.
Manual re-greasing while the machine is running
Re-greasing while the machine is running:
• Verify that the grease to be used is suitable
• Clean the grease nipples and the area around them
• Verify that the lubrication channel is open, if equipped with a handle, open it.
• Press the specified amount and type of grease into the bearing
• Let the machine run 1-2 hours in order to ensure that all excess grease is forced out of the
bearing. The bearing temperature may temporarily increase during this time
• If equipped with a handle, close it.
NOTE: Beware of all rotating parts during the re-greasing.
Manual re-greasing while the machine is at a standstill
Preferably, re-grease the machine while it is running. If this is not possible, or considered
dangerous, the re-greasing has to be carried out while the machine is at a standstill. In this case:
• Verify that the grease to be used is suitable
• Stop the machine
• Clean the grease nipples and the area around them
• Verify that the lubrication channel is open, if equipped with a handle, open it.
• Press only half the amount of the specified type of grease into the bearing
• Run the machine for a few minutes at full speed
• Stop the machine
• After the machine has stopped, press the specified amount of the correct grease into the
bearing
• Let the machine run 1-2 hours in order to ensure that all excess grease is forced out of the
bearing. The bearing temperature may temporarily increase during this time
• If equipped with a handle, close it.
Manual for Induction Motors and Generators
Maintenance - 73