ABB AMI Series - Page 13

Manual for Induction Motors and Generators
4 -
3BFP 000 050 R0101 REV E
Chapter 6 - Operation
6.1 General..................................................................................................................... 53
6.2 Normal operating conditions.................................................................................... 53
6.3 Number of starts....................................................................................................... 53
6.4 Supervision............................................................................................................... 54
6.4.1 Bearings................................................................................................... 54
6.4.2 Vibrations................................................................................................ 54
6.4.3 Temperatures........................................................................................... 54
6.4.4 Heat exchanger........................................................................................ 55
6.4.5 Slip ring unit............................................................................................ 55
6.5 Follow-up................................................................................................................. 55
6.6 Shut down................................................................................................................. 55
Chapter 7 - Maintenance
7.1 Preventive maintenance ........................................................................................... 56
7.2 Safety precautions.................................................................................................... 56
7.3 Maintenance program............................................................................................... 57
7.3.1 Recommended maintenance program..................................................... 59
7.3.1.1 General construction......................................................... 60
7.3.1.2 Main supply connection ................................................... 60
7.3.1.3 Stator and rotor................................................................. 61
7.3.1.4 Auxiliaries ........................................................................ 61
7.3.1.5 Slip ring unit..................................................................... 62
7.3.1.6 Lubrication system and bearings...................................... 62
7.3.1.7 Cooling system................................................................. 63
7.4 Maintenance of general constructions...................................................................... 64
7.4.1 The tightness of fastenings...................................................................... 64
7.4.2 Vibration and noise................................................................................. 65
7.4.3 Vibrations................................................................................................ 66
7.4.3.1 Measurement procedures and operational conditions ...... 66
7.4.3.2 Classification according to support flexibility ................. 67
7.4.3.3 Evaluation......................................................................... 67
7.5 Maintenance of bearings and lubrication system..................................................... 68
7.5.1 Sleeve bearings........................................................................................ 69
7.5.1.1 Oil level............................................................................ 69
7.5.1.2 Bearing temperature ......................................................... 69
7.5.2 Lubrication of sleeve bearings................................................................ 69
7.5.2.1 Lubrication oil temperature.............................................. 69
7.5.2.2 Control of the lubricant .................................................... 70
7.5.2.3 Recommended control values for the lubricating oil ....... 70
7.5.2.4 Oil qualities ...................................................................... 70
7.5.2.5 Oil change schedule for mineral oils................................ 71
7.5.3 Rolling bearings ...................................................................................... 72
7.5.3.1 Bearing construction......................................................... 72
7.5.3.2 Bearing plate..................................................................... 72
7.5.3.3 Re-greasing intervals........................................................ 72
7.5.3.4 Re-greasing....................................................................... 73
7.5.3.5 Bearing grease.................................................................. 74
7.5.3.6 Bearing maintenance........................................................ 75