ABB AMA - Page 13

Manual for High Voltage Process Performance Motors
4 -
3BFP 000 063 R0101 REV D
7.3.1 Recommended maintenance program..................................................... 49
7.3.1.1 General construction......................................................... 49
7.3.1.2 Stator and rotor................................................................. 50
7.3.1.3 Auxiliaries ........................................................................ 50
7.3.1.4 Lubrication system and bearings...................................... 51
7.4 Maintenance of general constructions...................................................................... 51
7.4.1 The tightness of fastenings...................................................................... 51
7.4.2 Vibration and noise................................................................................. 52
7.4.3 Vibrations................................................................................................ 53
7.4.3.1 Measurement procedures and operational conditions ...... 53
7.4.3.2 Classification according to support flexibility ................. 54
7.4.3.3 Evaluation......................................................................... 54
7.5 Maintenance of bearings and lubrication system..................................................... 55
7.5.1 Rolling bearings ...................................................................................... 56
7.5.1.1 Bearing construction......................................................... 56
7.5.1.2 Bearing plate..................................................................... 56
7.5.1.3 Re-greasing intervals........................................................ 56
7.5.1.4 Re-greasing....................................................................... 57
7.5.1.5 Bearing grease.................................................................. 58
7.5.1.6 Bearing maintenance........................................................ 59
7.6 Maintenance of stator and rotor windings................................................................ 59
7.6.1 Particular safety instructions for winding maintenance.......................... 60
7.6.2 The timing of the maintenance................................................................ 60
7.6.3 The correct operating temperature.......................................................... 61
7.6.4 Insulation resistance test ......................................................................... 61
7.6.4.1 Conversion of measured insulation resistance values ...... 61
7.6.4.2 General considerations ..................................................... 63
7.6.4.3 Minimum values for insulation resistance........................ 63
7.6.4.4 Stator winding insulation resistance measurement........... 63
7.6.5 Insulation resistance measurement for auxiliaries .................................. 64
7.6.6 The polarization index............................................................................. 65
7.6.7 Other maintenance operations................................................................. 65
7.7 Repairs, disassembly and assembly ......................................................................... 65
Chapter 8 - Trouble Shooting
8.1 Trouble shooting ...................................................................................................... 66
8.1.1 Mechanical performance......................................................................... 67
8.1.2 Lubrication system and bearings............................................................. 68
8.1.2.1 Lubrication system and rolling bearings .......................... 68
8.1.3 Thermal performance.............................................................................. 69
8.1.3.1 Thermal performance, rib cooled ..................................... 69
8.2 Electrical performance, excitation, control and protection...................................... 69
8.2.1 Protection trips ........................................................................................ 69
8.2.2 Pt-100 resistance temperature detectors.................................................. 70
Chapter 9 - After Sales Support and Spare Parts
9.1 After Sales................................................................................................................ 72
9.1.1 Site Services............................................................................................ 72
9.1.2 Spare Parts............................................................................................... 72
9.1.3 Support and Warranties........................................................................... 72